Merge pull request #2344 from monkey92t/hook

docs: add a description of the hook

.github/FUNDING.yml

@@ -1 +1 @@
-custom: ['https://uptrace.dev']
+custom: ['https://uptrace.dev/sponsor']

.github/ISSUE_TEMPLATE/config.yml

@@ -3,6 +3,3 @@ contact_links:
   - name: Discussions
     url: https://github.com/go-redis/redis/discussions
     about: Ask a question via GitHub Discussions
-  - name: Discord
-    url: https://discord.gg/rWtp5Aj
-    about: Ask a question via Discord

.github/workflows/build.yml

@@ -2,17 +2,21 @@ name: Go
 
 on:
   push:
-    branches: [master]
+    branches: [master, v9]
   pull_request:
-    branches: [master]
+    branches: [master, v9]
+
+permissions:
+  contents: read
 
 jobs:
   build:
     name: build
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
-        go-version: [1.15.x, 1.16.x]
+        go-version: [1.18.x, 1.19.x]
 
     services:
       redis:
@@ -24,12 +28,12 @@ jobs:
 
     steps:
       - name: Set up ${{ matrix.go-version }}
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.go-version }}
 
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Test
         run: make test

.github/workflows/commitlint.yml

@@ -0,0 +1,11 @@
+name: Lint Commit Messages
+on: [pull_request]
+
+jobs:
+  commitlint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - uses: wagoid/commitlint-github-action@v5

.github/workflows/golangci-lint.yml

@@ -7,13 +7,20 @@ on:
     branches:
       - master
       - main
+      - v9
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   golangci:
+    permissions:
+      contents: read  # for actions/checkout to fetch code
+      pull-requests: read  # for golangci/golangci-lint-action to fetch pull requests
     name: lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3

.github/workflows/release.yml

@@ -1,15 +1,17 @@
-name: release
+name: Releases
 
-on: push
+on:
+  push:
+    tags:
+      - 'v*'
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Release
-        uses: softprops/action-gh-release@v1
-        if: startsWith(github.ref, 'refs/tags/')
+      - uses: actions/checkout@v3
+      - uses: ncipollo/release-action@v1
         with:
-          body: Check CHANGELOG.md for details
+          body:
+            Please refer to
+            [CHANGELOG.md](https://github.com/go-redis/redis/blob/master/CHANGELOG.md) for details

.gitignore

@@ -1,3 +1,3 @@
 *.rdb
-testdata/*/
+testdata/*
 .idea/

.golangci.yml

@@ -2,25 +2,3 @@ run:
   concurrency: 8
   deadline: 5m
   tests: false
-linters:
-  enable-all: true
-  disable:
-    - funlen
-    - gochecknoglobals
-    - gochecknoinits
-    - gocognit
-    - goconst
-    - godox
-    - gosec
-    - maligned
-    - wsl
-    - gomnd
-    - goerr113
-    - exhaustive
-    - nestif
-    - nlreturn
-    - exhaustivestruct
-    - wrapcheck
-    - errorlint
-    - cyclop
-    - forcetypeassert

CHANGELOG.md

@@ -1,143 +1,55 @@
-# Changelog
+# [9.0.0-rc.2](https://github.com/go-redis/redis/compare/v9.0.0-rc.1...v9.0.0-rc.2) (2022-11-26)
 
-> :heart:
-> [**Uptrace.dev** - All-in-one tool to optimize performance and monitor errors & logs](https://uptrace.dev)
 
-## v8.11
+### Bug Fixes
 
-- Remove OpenTelemetry metrics.
-- Supports more redis commands and options.
+* capture error correctly in withConn ([d1bfaba](https://github.com/go-redis/redis/commit/d1bfaba549fe380d269c26cea0a0183ed1520a85))
+* fixes ring.SetAddrs and rebalance race  ([#2283](https://github.com/go-redis/redis/issues/2283)) ([d83436b](https://github.com/go-redis/redis/commit/d83436b321cd9ed52ba33c3edbe8f63bb0444c59))
+* read in route_randomly query param correctly ([f236053](https://github.com/go-redis/redis/commit/f236053735d10aec5e6e31fc3ced1b2e53292554))
+* reduce `SetAddrs` shards lock contention ([6c05a9f](https://github.com/go-redis/redis/commit/6c05a9f6b17f8e32593d3f7d594f82ba3dbcafb1)), closes [/github.com/go-redis/redis/pull/2190#discussion_r953040289](https://github.com//github.com/go-redis/redis/pull/2190/issues/discussion_r953040289) [#2077](https://github.com/go-redis/redis/issues/2077)
+* wrap cmds in Conn.TxPipeline ([5053db2](https://github.com/go-redis/redis/commit/5053db2f9c8b3ca25f497a75f70012c7ad6cd775))
 
-## v8.10
 
-- Removed extra OpenTelemetry spans from go-redis core. Now go-redis instrumentation only adds a
-  single span with a Redis command (instead of 4 spans). There are multiple reasons behind this
-  decision:
+### Features
 
-  - Traces become smaller and less noisy.
-  - It may be costly to process those 3 extra spans for each query.
-  - go-redis no longer depends on OpenTelemetry.
+* add HasErrorPrefix ([d3d8002](https://github.com/go-redis/redis/commit/d3d8002e894a1eab5bab2c9fff13439527e330d8))
+* add support for SINTERCARD command ([bc51c61](https://github.com/go-redis/redis/commit/bc51c61a458d1bc4fb4424c7c3e912325ef980cc))
 
-  Eventually we hope to replace the information that we no longer collect with OpenTelemetry
-  Metrics.
 
-## v8.9
 
-- Changed `PubSub.Channel` to only rely on `Ping` result. You can now use `WithChannelSize`,
-  `WithChannelHealthCheckInterval`, and `WithChannelSendTimeout` to override default settings.
+## v9 UNRELEASED
 
-## v8.8
+### Added
 
-- To make updating easier, extra modules now have the same version as go-redis does. That means that
-  you need to update your imports:
+- Added support for [RESP3](https://github.com/antirez/RESP3/blob/master/spec.md) protocol.
+  Contributed by @monkey92t who has done a lot of work recently.
+- Added `ContextTimeoutEnabled` option that controls whether the client respects context timeouts
+  and deadlines. See
+  [Redis Timeouts](https://redis.uptrace.dev/guide/go-redis-debugging.html#timeouts) for details.
+- Added `ParseClusterURL` to parse URLs into `ClusterOptions`, for example,
+  `redis://user:password@localhost:6789?dial_timeout=3&read_timeout=6s&addr=localhost:6790&addr=localhost:6791`.
+- Added metrics instrumentation using `redisotel.IstrumentMetrics`. See
+  [documentation](https://redis.uptrace.dev/guide/go-redis-monitoring.html)
 
-```
-github.com/go-redis/redis/extra/redisotel -> github.com/go-redis/redis/extra/redisotel/v8
-github.com/go-redis/redis/extra/rediscensus -> github.com/go-redis/redis/extra/rediscensus/v8
-```
+### Changed
 
-## v8.5
+- Removed asynchronous cancellation based on the context timeout. It was racy in v8 and is
+  completely gone in v9.
+- Reworked hook interface and added `DialHook`.
+- Replaced `redisotel.NewTracingHook` with `redisotel.InstrumentTracing`. See
+  [example](example/otel) and
+  [documentation](https://redis.uptrace.dev/guide/go-redis-monitoring.html).
+- Replaced `*redis.Z` with `redis.Z` since it is small enough to be passed as value without making
+  an allocation.
+- Renamed the option `MaxConnAge` to `ConnMaxLifetime`.
+- Renamed the option `IdleTimeout` to `ConnMaxIdleTime`.
+- Removed connection reaper in favor of `MaxIdleConns`.
+- Removed `WithContext` since `context.Context` can be passed directly as an arg.
+- Removed `Pipeline.Close` since there is no real need to explicitly manage pipeline resources and
+  it can be safely reused via `sync.Pool` etc. `Pipeline.Discard` is still available if you want to
+  reset commands for some reason.
 
-- [knadh](https://github.com/knadh) contributed long-awaited ability to scan Redis Hash into a
-  struct:
+### Fixed
 
-```go
-err := rdb.HGetAll(ctx, "hash").Scan(&data)
-
-err := rdb.MGet(ctx, "key1", "key2").Scan(&data)
-```
-
-- Please check [redismock](https://github.com/go-redis/redismock) by
-  [monkey92t](https://github.com/monkey92t) if you are looking for mocking Redis Client.
-
-## v8
-
-- All commands require `context.Context` as a first argument, e.g. `rdb.Ping(ctx)`. If you are not
-  using `context.Context` yet, the simplest option is to define global package variable
-  `var ctx = context.TODO()` and use it when `ctx` is required.
-
-- Full support for `context.Context` canceling.
-
-- Added `redis.NewFailoverClusterClient` that supports routing read-only commands to a slave node.
-
-- Added `redisext.OpenTemetryHook` that adds
-  [Redis OpenTelemetry instrumentation](https://redis.uptrace.dev/tracing/).
-
-- Redis slow log support.
-
-- Ring uses Rendezvous Hashing by default which provides better distribution. You need to move
-  existing keys to a new location or keys will be inaccessible / lost. To use old hashing scheme:
-
-```go
-import "github.com/golang/groupcache/consistenthash"
-
-ring := redis.NewRing(&redis.RingOptions{
-    NewConsistentHash: func() {
-        return consistenthash.New(100, crc32.ChecksumIEEE)
-    },
-})
-```
-
-- `ClusterOptions.MaxRedirects` default value is changed from 8 to 3.
-- `Options.MaxRetries` default value is changed from 0 to 3.
-
-- `Cluster.ForEachNode` is renamed to `ForEachShard` for consistency with `Ring`.
-
-## v7.3
-
-- New option `Options.Username` which causes client to use `AuthACL`. Be aware if your connection
-  URL contains username.
-
-## v7.2
-
-- Existing `HMSet` is renamed to `HSet` and old deprecated `HMSet` is restored for Redis 3 users.
-
-## v7.1
-
-- Existing `Cmd.String` is renamed to `Cmd.Text`. New `Cmd.String` implements `fmt.Stringer`
-  interface.
-
-## v7
-
-- _Important_. Tx.Pipeline now returns a non-transactional pipeline. Use Tx.TxPipeline for a
-  transactional pipeline.
-- WrapProcess is replaced with more convenient AddHook that has access to context.Context.
-- WithContext now can not be used to create a shallow copy of the client.
-- New methods ProcessContext, DoContext, and ExecContext.
-- Client respects Context.Deadline when setting net.Conn deadline.
-- Client listens on Context.Done while waiting for a connection from the pool and returns an error
-  when context context is cancelled.
-- Add PubSub.ChannelWithSubscriptions that sends `*Subscription` in addition to `*Message` to allow
-  detecting reconnections.
-- `time.Time` is now marshalled in RFC3339 format. `rdb.Get("foo").Time()` helper is added to parse
-  the time.
-- `SetLimiter` is removed and added `Options.Limiter` instead.
-- `HMSet` is deprecated as of Redis v4.
-
-## v6.15
-
-- Cluster and Ring pipelines process commands for each node in its own goroutine.
-
-## 6.14
-
-- Added Options.MinIdleConns.
-- Added Options.MaxConnAge.
-- PoolStats.FreeConns is renamed to PoolStats.IdleConns.
-- Add Client.Do to simplify creating custom commands.
-- Add Cmd.String, Cmd.Int, Cmd.Int64, Cmd.Uint64, Cmd.Float64, and Cmd.Bool helpers.
-- Lower memory usage.
-
-## v6.13
-
-- Ring got new options called `HashReplicas` and `Hash`. It is recommended to set
-  `HashReplicas = 1000` for better keys distribution between shards.
-- Cluster client was optimized to use much less memory when reloading cluster state.
-- PubSub.ReceiveMessage is re-worked to not use ReceiveTimeout so it does not lose data when timeout
-  occurres. In most cases it is recommended to use PubSub.Channel instead.
-- Dialer.KeepAlive is set to 5 minutes by default.
-
-## v6.12
-
-- ClusterClient got new option called `ClusterSlots` which allows to build cluster of normal Redis
-  Servers that don't have cluster mode enabled. See
-  https://godoc.org/github.com/go-redis/redis#example-NewClusterClient--ManualSetup
+- Improved and fixed pipeline retries.
+- As usual, added more commands and fixed some bugs.

Makefile

@@ -1,9 +1,13 @@
+PACKAGE_DIRS := $(shell find . -mindepth 2 -type f -name 'go.mod' -exec dirname {} \; | sort)
+
 test: testdeps
 	go test ./...
 	go test ./... -short -race
 	go test ./... -run=NONE -bench=. -benchmem
 	env GOOS=linux GOARCH=386 go test ./...
 	go vet
+	cd internal/customvet && go build .
+	go vet -vettool ./internal/customvet/customvet
 
 testdeps: testdata/redis/src/redis-server
 
@@ -14,13 +18,19 @@ bench: testdeps
 
 testdata/redis:
 	mkdir -p $@
-	wget -qO- https://download.redis.io/releases/redis-6.2.5.tar.gz | tar xvz --strip-components=1 -C $@
+	wget -qO- https://download.redis.io/releases/redis-7.0.7.tar.gz | tar xvz --strip-components=1 -C $@
 
 testdata/redis/src/redis-server: testdata/redis
 	cd $< && make all
 
-tag:
-	git tag $(VERSION)
-	git tag extra/rediscmd/$(VERSION)
-	git tag extra/redisotel/$(VERSION)
-	git tag extra/rediscensus/$(VERSION)
+fmt:
+	gofmt -w -s ./
+	goimports -w  -local github.com/go-redis/redis ./
+
+go_mod_tidy:
+	set -e; for dir in $(PACKAGE_DIRS); do \
+	  echo "go mod tidy in $${dir}"; \
+	  (cd "$${dir}" && \
+	    go get -u ./... && \
+	    go mod tidy -compat=1.17); \
+	done

README.md

@@ -1,52 +1,47 @@
-<p align="center">
-  <a href="https://uptrace.dev/?utm_source=gh-redis&utm_campaign=gh-redis-banner1">
-    <img src="https://raw.githubusercontent.com/uptrace/roadmap/master/banner1.png" alt="All-in-one tool to optimize performance and monitor errors & logs">
-  </a>
-</p>
+# Redis client for Go
 
-# Redis client for Golang
-
-![build workflow](https://github.com/go-redis/redis/actions/workflows/build.yml/badge.svg)
+[![build workflow](https://github.com/go-redis/redis/actions/workflows/build.yml/badge.svg)](https://github.com/go-redis/redis/actions)
 [![PkgGoDev](https://pkg.go.dev/badge/github.com/go-redis/redis/v8)](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc)
 [![Documentation](https://img.shields.io/badge/redis-documentation-informational)](https://redis.uptrace.dev/)
 [![Chat](https://discordapp.com/api/guilds/752070105847955518/widget.png)](https://discord.gg/rWtp5Aj)
 
-- Join [Discord](https://discord.gg/rWtp5Aj) to ask questions.
+> go-redis is brought to you by :star: [**uptrace/uptrace**](https://github.com/uptrace/uptrace).
+> Uptrace is an open-source APM tool that supports distributed tracing, metrics, and logs. You can
+> use it to monitor applications and set up automatic alerts to receive notifications via email,
+> Slack, Telegram, and others.
+>
+> See [OpenTelemetry](example/otel) example which demonstrates how you can use Uptrace to monitor
+> go-redis.
+
+## Resources
+
 - [Documentation](https://redis.uptrace.dev)
-- [Reference](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc)
-- [Examples](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#pkg-examples)
-- [RealWorld example app](https://github.com/uptrace/go-treemux-realworld-example-app)
-
-My other projects:
-
-- [Bun](https://bun.uptrace.dev) - fast and simple SQL client for PostgreSQL, MySQL, and SQLite.
-- [treemux](https://github.com/vmihailenco/treemux) - high-speed, flexible, tree-based HTTP router
-  for Go.
+- [Discussions](https://github.com/go-redis/redis/discussions)
+- [Chat](https://discord.gg/rWtp5Aj)
+- [Reference](https://pkg.go.dev/github.com/go-redis/redis/v9)
+- [Examples](https://pkg.go.dev/github.com/go-redis/redis/v9#pkg-examples)
 
 ## Ecosystem
 
-- [Redis Mock](https://github.com/go-redis/redismock).
-- [Distributed Locks](https://github.com/bsm/redislock).
-- [Redis Cache](https://github.com/go-redis/cache).
-- [Rate limiting](https://github.com/go-redis/redis_rate).
+- [Redis Mock](https://github.com/go-redis/redismock)
+- [Distributed Locks](https://github.com/bsm/redislock)
+- [Redis Cache](https://github.com/go-redis/cache)
+- [Rate limiting](https://github.com/go-redis/redis_rate)
+
+This client also works with [Kvrocks](https://github.com/apache/incubator-kvrocks), a distributed
+key value NoSQL database that uses RocksDB as storage engine and is compatible with Redis protocol.
 
 ## Features
 
 - Redis 3 commands except QUIT, MONITOR, and SYNC.
 - Automatic connection pooling with
-  [circuit breaker](https://en.wikipedia.org/wiki/Circuit_breaker_design_pattern) support.
-- [Pub/Sub](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#PubSub).
-- [Transactions](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#example-Client-TxPipeline).
-- [Pipeline](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#example-Client-Pipeline) and
-  [TxPipeline](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#example-Client-TxPipeline).
-- [Scripting](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#Script).
-- [Timeouts](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#Options).
-- [Redis Sentinel](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#NewFailoverClient).
-- [Redis Cluster](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#NewClusterClient).
-- [Cluster of Redis Servers](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#example-NewClusterClient--ManualSetup)
-  without using cluster mode and Redis Sentinel.
-- [Ring](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#NewRing).
-- [Instrumentation](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#ex-package--Instrumentation).
+- [Pub/Sub](https://redis.uptrace.dev/guide/go-redis-pubsub.html).
+- [Pipelines and transactions](https://redis.uptrace.dev/guide/go-redis-pipelines.html).
+- [Scripting](https://redis.uptrace.dev/guide/lua-scripting.html).
+- [Redis Sentinel](https://redis.uptrace.dev/guide/go-redis-sentinel.html).
+- [Redis Cluster](https://redis.uptrace.dev/guide/go-redis-cluster.html).
+- [Redis Ring](https://redis.uptrace.dev/guide/ring.html).
+- [Redis Performance Monitoring](https://redis.uptrace.dev/guide/redis-performance-monitoring.html).
 
 ## Installation
 
@@ -58,18 +53,25 @@ module:
 go mod init github.com/my/repo
 ```
 
-And then install go-redis/v8 (note _v8_ in the import; omitting it is a popular mistake):
+If you are using **Redis 6**, install go-redis/**v8**:
 
 ```shell
 go get github.com/go-redis/redis/v8
 ```
 
+If you are using **Redis 7**, install go-redis/**v9**:
+
+```shell
+go get github.com/go-redis/redis/v9
+```
+
 ## Quickstart
 
 ```go
 import (
     "context"
     "github.com/go-redis/redis/v8"
+    "fmt"
 )
 
 var ctx = context.Background()
@@ -146,7 +148,7 @@ go-redis will start a redis-server and run the test cases.
 
 The paths of redis-server bin file and redis config file are defined in `main_test.go`:
 
-```
+```go
 var (
 	redisServerBin, _  = filepath.Abs(filepath.Join("testdata", "redis", "src", "redis-server"))
 	redisServerConf, _ = filepath.Abs(filepath.Join("testdata", "redis", "redis.conf"))
@@ -156,17 +158,24 @@ var (
 For local testing, you can change the variables to refer to your local files, or create a soft link
 to the corresponding folder for redis-server and copy the config file to `testdata/redis/`:
 
-```
+```shell
 ln -s /usr/bin/redis-server ./go-redis/testdata/redis/src
 cp ./go-redis/testdata/redis.conf ./go-redis/testdata/redis/
 ```
 
 Lastly, run:
 
-```
+```shell
 go test
 ```
 
+## See also
+
+- [Golang ORM](https://bun.uptrace.dev) for PostgreSQL, MySQL, MSSQL, and SQLite
+- [Golang PostgreSQL](https://bun.uptrace.dev/postgres/)
+- [Golang HTTP router](https://bunrouter.uptrace.dev/)
+- [Golang ClickHouse ORM](https://github.com/uptrace/go-clickhouse)
+
 ## Contributors
 
 Thanks to all the people who already contributed!

RELEASING.md

@@ -3,7 +3,7 @@
 1. Run `release.sh` script which updates versions in go.mod files and pushes a new branch to GitHub:
 
 ```shell
-./scripts/release.sh -t v1.0.0
+TAG=v1.0.0 ./scripts/release.sh
 ```
 
 2. Open a pull request and wait for the build to finish.
@@ -11,11 +11,5 @@
 3. Merge the pull request and run `tag.sh` to create tags for packages:
 
 ```shell
-./scripts/tag.sh -t v1.0.0
-```
-
-4. Push the tags:
-
-```shell
-git push origin --tags
+TAG=v1.0.0 ./scripts/tag.sh
 ```

bench_decode_test.go

@@ -8,7 +8,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-redis/redis/v8/internal/proto"
+	"github.com/go-redis/redis/v9/internal/proto"
 )
 
 var ctx = context.TODO()
@@ -18,14 +18,17 @@ type ClientStub struct {
 	resp []byte
 }
 
+var initHello = []byte("%1\r\n+proto\r\n:3\r\n")
+
 func NewClientStub(resp []byte) *ClientStub {
 	stub := &ClientStub{
 		resp: resp,
 	}
+
 	stub.Cmdable = NewClient(&Options{
 		PoolSize: 128,
 		Dialer: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			return stub.stubConn(), nil
+			return stub.stubConn(initHello), nil
 		},
 	})
 	return stub
@@ -38,9 +41,9 @@ func NewClusterClientStub(resp []byte) *ClientStub {
 
 	client := NewClusterClient(&ClusterOptions{
 		PoolSize: 128,
-		Addrs:    []string{"127.0.0.1:6379"},
+		Addrs:    []string{":6379"},
 		Dialer: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			return stub.stubConn(), nil
+			return stub.stubConn(initHello), nil
 		},
 		ClusterSlots: func(_ context.Context) ([]ClusterSlot, error) {
 			return []ClusterSlot{
@@ -65,18 +68,27 @@ func NewClusterClientStub(resp []byte) *ClientStub {
 	return stub
 }
 
-func (c *ClientStub) stubConn() *ConnStub {
+func (c *ClientStub) stubConn(init []byte) *ConnStub {
 	return &ConnStub{
+		init: init,
 		resp: c.resp,
 	}
 }
 
 type ConnStub struct {
+	init []byte
 	resp []byte
 	pos  int
 }
 
 func (c *ConnStub) Read(b []byte) (n int, err error) {
+	// Return conn.init()
+	if len(c.init) > 0 {
+		n = copy(b, c.init)
+		c.init = c.init[n:]
+		return n, nil
+	}
+
 	if len(c.resp) == 0 {
 		return 0, io.EOF
 	}
@@ -106,7 +118,7 @@ func BenchmarkDecode(b *testing.B) {
 	}
 
 	benchmarks := []Benchmark{
-		{"single", NewClientStub},
+		{"server", NewClientStub},
 		{"cluster", NewClusterClientStub},
 	}
 

bench_test.go

@@ -4,12 +4,13 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"strconv"
 	"strings"
 	"sync"
 	"testing"
 	"time"
 
-	"github.com/go-redis/redis/v8"
+	"github.com/go-redis/redis/v9"
 )
 
 func benchmarkRedisClient(ctx context.Context, poolSize int) *redis.Client {
@@ -222,7 +223,7 @@ func BenchmarkZAdd(b *testing.B) {
 
 	b.RunParallel(func(pb *testing.PB) {
 		for pb.Next() {
-			err := client.ZAdd(ctx, "key", &redis.Z{
+			err := client.ZAdd(ctx, "key", redis.Z{
 				Score:  float64(1),
 				Member: "hello",
 			}).Err()
@@ -233,34 +234,43 @@ func BenchmarkZAdd(b *testing.B) {
 	})
 }
 
-var clientSink *redis.Client
-
-func BenchmarkWithContext(b *testing.B) {
+func BenchmarkXRead(b *testing.B) {
 	ctx := context.Background()
-	rdb := benchmarkRedisClient(ctx, 10)
-	defer rdb.Close()
+	client := benchmarkRedisClient(ctx, 10)
+	defer client.Close()
 
-	b.ResetTimer()
-	b.ReportAllocs()
-
-	for i := 0; i < b.N; i++ {
-		clientSink = rdb.WithContext(ctx)
+	args := redis.XAddArgs{
+		Stream: "1",
+		ID:     "*",
+		Values: map[string]string{"uno": "dos"},
 	}
-}
 
-var ringSink *redis.Ring
-
-func BenchmarkRingWithContext(b *testing.B) {
-	ctx := context.Background()
-	rdb := redis.NewRing(&redis.RingOptions{})
-	defer rdb.Close()
-
-	b.ResetTimer()
-	b.ReportAllocs()
-
-	for i := 0; i < b.N; i++ {
-		ringSink = rdb.WithContext(ctx)
+	lenStreams := 16
+	streams := make([]string, 0, lenStreams)
+	for i := 0; i < lenStreams; i++ {
+		streams = append(streams, strconv.Itoa(i))
 	}
+	for i := 0; i < lenStreams; i++ {
+		streams = append(streams, "0")
+	}
+
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			client.XAdd(ctx, &args)
+
+			err := client.XRead(ctx, &redis.XReadArgs{
+				Streams: streams,
+				Count:   1,
+				Block:   time.Second,
+			}).Err()
+			if err != nil {
+				b.Fatal(err)
+			}
+		}
+	})
 }
 
 //------------------------------------------------------------------------------
@@ -301,6 +311,32 @@ func BenchmarkClusterPing(b *testing.B) {
 	})
 }
 
+func BenchmarkClusterDoInt(b *testing.B) {
+	if testing.Short() {
+		b.Skip("skipping in short mode")
+	}
+
+	ctx := context.Background()
+	cluster := newClusterScenario()
+	if err := startCluster(ctx, cluster); err != nil {
+		b.Fatal(err)
+	}
+	defer cluster.Close()
+
+	client := cluster.newClusterClient(ctx, redisClusterOptions())
+	defer client.Close()
+
+	b.ResetTimer()
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			err := client.Do(ctx, "SET", 10, 10).Err()
+			if err != nil {
+				b.Fatal(err)
+			}
+		}
+	})
+}
+
 func BenchmarkClusterSetString(b *testing.B) {
 	if testing.Short() {
 		b.Skip("skipping in short mode")
@@ -330,17 +366,77 @@ func BenchmarkClusterSetString(b *testing.B) {
 	})
 }
 
-var clusterSink *redis.ClusterClient
+func BenchmarkExecRingSetAddrsCmd(b *testing.B) {
+	const (
+		ringShard1Name = "ringShardOne"
+		ringShard2Name = "ringShardTwo"
+	)
 
-func BenchmarkClusterWithContext(b *testing.B) {
-	ctx := context.Background()
-	rdb := redis.NewClusterClient(&redis.ClusterOptions{})
-	defer rdb.Close()
+	for _, port := range []string{ringShard1Port, ringShard2Port} {
+		if _, err := startRedis(port); err != nil {
+			b.Fatal(err)
+		}
+	}
+
+	b.Cleanup(func() {
+		for _, p := range processes {
+			if err := p.Close(); err != nil {
+				b.Errorf("Failed to stop redis process: %v", err)
+			}
+		}
+		processes = nil
+	})
+
+	ring := redis.NewRing(&redis.RingOptions{
+		Addrs: map[string]string{
+			"ringShardOne": ":" + ringShard1Port,
+		},
+		NewClient: func(opt *redis.Options) *redis.Client {
+			// Simulate slow shard creation
+			time.Sleep(100 * time.Millisecond)
+			return redis.NewClient(opt)
+		},
+	})
+	defer ring.Close()
+
+	if _, err := ring.Ping(context.Background()).Result(); err != nil {
+		b.Fatal(err)
+	}
+
+	// Continuously update addresses by adding and removing one address
+	updatesDone := make(chan struct{})
+	defer func() { close(updatesDone) }()
+	go func() {
+		ticker := time.NewTicker(10 * time.Millisecond)
+		defer ticker.Stop()
+		for i := 0; ; i++ {
+			select {
+			case <-ticker.C:
+				if i%2 == 0 {
+					ring.SetAddrs(map[string]string{
+						ringShard1Name: ":" + ringShard1Port,
+					})
+				} else {
+					ring.SetAddrs(map[string]string{
+						ringShard1Name: ":" + ringShard1Port,
+						ringShard2Name: ":" + ringShard2Port,
+					})
+				}
+			case <-updatesDone:
+				return
+			}
+		}
+	}()
 
 	b.ResetTimer()
-	b.ReportAllocs()
-
 	for i := 0; i < b.N; i++ {
-		clusterSink = rdb.WithContext(ctx)
+		if _, err := ring.Ping(context.Background()).Result(); err != nil {
+			if err == redis.ErrClosed {
+				// The shard client could be closed while ping command is in progress
+				continue
+			} else {
+				b.Fatal(err)
+			}
+		}
 	}
 }

cluster.go

@@ -6,17 +6,19 @@ import (
 	"fmt"
 	"math"
 	"net"
+	"net/url"
 	"runtime"
 	"sort"
+	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
 
-	"github.com/go-redis/redis/v8/internal"
-	"github.com/go-redis/redis/v8/internal/hashtag"
-	"github.com/go-redis/redis/v8/internal/pool"
-	"github.com/go-redis/redis/v8/internal/proto"
-	"github.com/go-redis/redis/v8/internal/rand"
+	"github.com/go-redis/redis/v9/internal"
+	"github.com/go-redis/redis/v9/internal/hashtag"
+	"github.com/go-redis/redis/v9/internal/pool"
+	"github.com/go-redis/redis/v9/internal/proto"
+	"github.com/go-redis/redis/v9/internal/rand"
 )
 
 var errClusterNoNodes = fmt.Errorf("redis: cluster has no nodes")
@@ -27,6 +29,9 @@ type ClusterOptions struct {
 	// A seed list of host:port addresses of cluster nodes.
 	Addrs []string
 
+	// ClientName will execute the `CLIENT SETNAME ClientName` command for each conn.
+	ClientName string
+
 	// NewClient creates a cluster node client with provided name and options.
 	NewClient func(opt *Options) *Client
 
@@ -64,20 +69,18 @@ type ClusterOptions struct {
 	MinRetryBackoff time.Duration
 	MaxRetryBackoff time.Duration
 
-	DialTimeout  time.Duration
-	ReadTimeout  time.Duration
-	WriteTimeout time.Duration
+	DialTimeout           time.Duration
+	ReadTimeout           time.Duration
+	WriteTimeout          time.Duration
+	ContextTimeoutEnabled bool
 
-	// PoolFIFO uses FIFO mode for each node connection pool GET/PUT (default LIFO).
-	PoolFIFO bool
-
-	// PoolSize applies per cluster node and not for the whole cluster.
-	PoolSize           int
-	MinIdleConns       int
-	MaxConnAge         time.Duration
-	PoolTimeout        time.Duration
-	IdleTimeout        time.Duration
-	IdleCheckFrequency time.Duration
+	PoolFIFO        bool
+	PoolSize        int // applies per cluster node and not for the whole cluster
+	PoolTimeout     time.Duration
+	MinIdleConns    int
+	MaxIdleConns    int
+	ConnMaxIdleTime time.Duration
+	ConnMaxLifetime time.Duration
 
 	TLSConfig *tls.Config
 }
@@ -131,12 +134,134 @@ func (opt *ClusterOptions) init() {
 	}
 }
 
-func (opt *ClusterOptions) clientOptions() *Options {
-	const disableIdleCheck = -1
+// ParseClusterURL parses a URL into ClusterOptions that can be used to connect to Redis.
+// The URL must be in the form:
+//
+//	redis://<user>:<password>@<host>:<port>
+//	or
+//	rediss://<user>:<password>@<host>:<port>
+//
+// To add additional addresses, specify the query parameter, "addr" one or more times. e.g:
+//
+//	redis://<user>:<password>@<host>:<port>?addr=<host2>:<port2>&addr=<host3>:<port3>
+//	or
+//	rediss://<user>:<password>@<host>:<port>?addr=<host2>:<port2>&addr=<host3>:<port3>
+//
+// Most Option fields can be set using query parameters, with the following restrictions:
+//   - field names are mapped using snake-case conversion: to set MaxRetries, use max_retries
+//   - only scalar type fields are supported (bool, int, time.Duration)
+//   - for time.Duration fields, values must be a valid input for time.ParseDuration();
+//     additionally a plain integer as value (i.e. without unit) is intepreted as seconds
+//   - to disable a duration field, use value less than or equal to 0; to use the default
+//     value, leave the value blank or remove the parameter
+//   - only the last value is interpreted if a parameter is given multiple times
+//   - fields "network", "addr", "username" and "password" can only be set using other
+//     URL attributes (scheme, host, userinfo, resp.), query paremeters using these
+//     names will be treated as unknown parameters
+//   - unknown parameter names will result in an error
+//
+// Example:
+//
+//	redis://user:password@localhost:6789?dial_timeout=3&read_timeout=6s&addr=localhost:6790&addr=localhost:6791
+//	is equivalent to:
+//	&ClusterOptions{
+//		Addr:        ["localhost:6789", "localhost:6790", "localhost:6791"]
+//		DialTimeout: 3 * time.Second, // no time unit = seconds
+//		ReadTimeout: 6 * time.Second,
+//	}
+func ParseClusterURL(redisURL string) (*ClusterOptions, error) {
+	o := &ClusterOptions{}
 
+	u, err := url.Parse(redisURL)
+	if err != nil {
+		return nil, err
+	}
+
+	// add base URL to the array of addresses
+	// more addresses may be added through the URL params
+	h, p := getHostPortWithDefaults(u)
+	o.Addrs = append(o.Addrs, net.JoinHostPort(h, p))
+
+	// setup username, password, and other configurations
+	o, err = setupClusterConn(u, h, o)
+	if err != nil {
+		return nil, err
+	}
+
+	return o, nil
+}
+
+// setupClusterConn gets the username and password from the URL and the query parameters.
+func setupClusterConn(u *url.URL, host string, o *ClusterOptions) (*ClusterOptions, error) {
+	switch u.Scheme {
+	case "rediss":
+		o.TLSConfig = &tls.Config{ServerName: host}
+		fallthrough
+	case "redis":
+		o.Username, o.Password = getUserPassword(u)
+	default:
+		return nil, fmt.Errorf("redis: invalid URL scheme: %s", u.Scheme)
+	}
+
+	// retrieve the configuration from the query parameters
+	o, err := setupClusterQueryParams(u, o)
+	if err != nil {
+		return nil, err
+	}
+
+	return o, nil
+}
+
+// setupClusterQueryParams converts query parameters in u to option value in o.
+func setupClusterQueryParams(u *url.URL, o *ClusterOptions) (*ClusterOptions, error) {
+	q := queryOptions{q: u.Query()}
+
+	o.ClientName = q.string("client_name")
+	o.MaxRedirects = q.int("max_redirects")
+	o.ReadOnly = q.bool("read_only")
+	o.RouteByLatency = q.bool("route_by_latency")
+	o.RouteRandomly = q.bool("route_randomly")
+	o.MaxRetries = q.int("max_retries")
+	o.MinRetryBackoff = q.duration("min_retry_backoff")
+	o.MaxRetryBackoff = q.duration("max_retry_backoff")
+	o.DialTimeout = q.duration("dial_timeout")
+	o.ReadTimeout = q.duration("read_timeout")
+	o.WriteTimeout = q.duration("write_timeout")
+	o.PoolFIFO = q.bool("pool_fifo")
+	o.PoolSize = q.int("pool_size")
+	o.MinIdleConns = q.int("min_idle_conns")
+	o.PoolTimeout = q.duration("pool_timeout")
+	o.ConnMaxLifetime = q.duration("conn_max_lifetime")
+	o.ConnMaxIdleTime = q.duration("conn_max_idle_time")
+
+	if q.err != nil {
+		return nil, q.err
+	}
+
+	// addr can be specified as many times as needed
+	addrs := q.strings("addr")
+	for _, addr := range addrs {
+		h, p, err := net.SplitHostPort(addr)
+		if err != nil || h == "" || p == "" {
+			return nil, fmt.Errorf("redis: unable to parse addr param: %s", addr)
+		}
+
+		o.Addrs = append(o.Addrs, net.JoinHostPort(h, p))
+	}
+
+	// any parameters left?
+	if r := q.remaining(); len(r) > 0 {
+		return nil, fmt.Errorf("redis: unexpected option: %s", strings.Join(r, ", "))
+	}
+
+	return o, nil
+}
+
+func (opt *ClusterOptions) clientOptions() *Options {
 	return &Options{
-		Dialer:    opt.Dialer,
-		OnConnect: opt.OnConnect,
+		ClientName: opt.ClientName,
+		Dialer:     opt.Dialer,
+		OnConnect:  opt.OnConnect,
 
 		Username: opt.Username,
 		Password: opt.Password,
@@ -149,13 +274,13 @@ func (opt *ClusterOptions) clientOptions() *Options {
 		ReadTimeout:  opt.ReadTimeout,
 		WriteTimeout: opt.WriteTimeout,
 
-		PoolFIFO:           opt.PoolFIFO,
-		PoolSize:           opt.PoolSize,
-		MinIdleConns:       opt.MinIdleConns,
-		MaxConnAge:         opt.MaxConnAge,
-		PoolTimeout:        opt.PoolTimeout,
-		IdleTimeout:        opt.IdleTimeout,
-		IdleCheckFrequency: disableIdleCheck,
+		PoolFIFO:        opt.PoolFIFO,
+		PoolSize:        opt.PoolSize,
+		PoolTimeout:     opt.PoolTimeout,
+		MinIdleConns:    opt.MinIdleConns,
+		MaxIdleConns:    opt.MaxIdleConns,
+		ConnMaxIdleTime: opt.ConnMaxIdleTime,
+		ConnMaxLifetime: opt.ConnMaxLifetime,
 
 		TLSConfig: opt.TLSConfig,
 		// If ClusterSlots is populated, then we probably have an artificial
@@ -204,15 +329,26 @@ func (n *clusterNode) updateLatency() {
 	const numProbe = 10
 	var dur uint64
 
+	successes := 0
 	for i := 0; i < numProbe; i++ {
 		time.Sleep(time.Duration(10+rand.Intn(10)) * time.Millisecond)
 
 		start := time.Now()
-		n.Client.Ping(context.TODO())
-		dur += uint64(time.Since(start) / time.Microsecond)
+		err := n.Client.Ping(context.TODO()).Err()
+		if err == nil {
+			dur += uint64(time.Since(start) / time.Microsecond)
+			successes++
+		}
 	}
 
-	latency := float64(dur) / float64(numProbe)
+	var latency float64
+	if successes == 0 {
+		// If none of the pings worked, set latency to some arbitrarily high value so this node gets
+		// least priority.
+		latency = float64((1 * time.Minute) / time.Microsecond)
+	} else {
+		latency = float64(dur) / float64(successes)
+	}
 	atomic.StoreUint32(&n.latency, uint32(latency+0.5))
 }
 
@@ -262,6 +398,7 @@ type clusterNodes struct {
 	nodes       map[string]*clusterNode
 	activeAddrs []string
 	closed      bool
+	onNewNode   []func(rdb *Client)
 
 	_generation uint32 // atomic
 }
@@ -297,6 +434,12 @@ func (c *clusterNodes) Close() error {
 	return firstErr
 }
 
+func (c *clusterNodes) OnNewNode(fn func(rdb *Client)) {
+	c.mu.Lock()
+	c.onNewNode = append(c.onNewNode, fn)
+	c.mu.Unlock()
+}
+
 func (c *clusterNodes) Addrs() ([]string, error) {
 	var addrs []string
 
@@ -352,7 +495,7 @@ func (c *clusterNodes) GC(generation uint32) {
 	}
 }
 
-func (c *clusterNodes) Get(addr string) (*clusterNode, error) {
+func (c *clusterNodes) GetOrCreate(addr string) (*clusterNode, error) {
 	node, err := c.get(addr)
 	if err != nil {
 		return nil, err
@@ -374,6 +517,9 @@ func (c *clusterNodes) Get(addr string) (*clusterNode, error) {
 	}
 
 	node = newClusterNode(c.opt, addr)
+	for _, fn := range c.onNewNode {
+		fn(node.Client)
+	}
 
 	c.addrs = appendIfNotExists(c.addrs, addr)
 	c.nodes[addr] = node
@@ -416,7 +562,7 @@ func (c *clusterNodes) Random() (*clusterNode, error) {
 	}
 
 	n := rand.Intn(len(addrs))
-	return c.Get(addrs[n])
+	return c.GetOrCreate(addrs[n])
 }
 
 //------------------------------------------------------------------------------
@@ -474,7 +620,7 @@ func newClusterState(
 				addr = replaceLoopbackHost(addr, originHost)
 			}
 
-			node, err := c.nodes.Get(addr)
+			node, err := c.nodes.GetOrCreate(addr)
 			if err != nil {
 				return nil, err
 			}
@@ -683,21 +829,16 @@ func (c *clusterStateHolder) ReloadOrGet(ctx context.Context) (*clusterState, er
 
 //------------------------------------------------------------------------------
 
-type clusterClient struct {
-	opt           *ClusterOptions
-	nodes         *clusterNodes
-	state         *clusterStateHolder //nolint:structcheck
-	cmdsInfoCache *cmdsInfoCache      //nolint:structcheck
-}
-
 // ClusterClient is a Redis Cluster client representing a pool of zero
 // or more underlying connections. It's safe for concurrent use by
 // multiple goroutines.
 type ClusterClient struct {
-	*clusterClient
+	opt           *ClusterOptions
+	nodes         *clusterNodes
+	state         *clusterStateHolder
+	cmdsInfoCache *cmdsInfoCache
 	cmdable
 	hooks
-	ctx context.Context
 }
 
 // NewClusterClient returns a Redis Cluster client as described in
@@ -706,38 +847,21 @@ func NewClusterClient(opt *ClusterOptions) *ClusterClient {
 	opt.init()
 
 	c := &ClusterClient{
-		clusterClient: &clusterClient{
-			opt:   opt,
-			nodes: newClusterNodes(opt),
-		},
-		ctx: context.Background(),
+		opt:   opt,
+		nodes: newClusterNodes(opt),
 	}
+
 	c.state = newClusterStateHolder(c.loadState)
 	c.cmdsInfoCache = newCmdsInfoCache(c.cmdsInfo)
 	c.cmdable = c.Process
 
-	if opt.IdleCheckFrequency > 0 {
-		go c.reaper(opt.IdleCheckFrequency)
-	}
+	c.hooks.setProcess(c.process)
+	c.hooks.setProcessPipeline(c.processPipeline)
+	c.hooks.setProcessTxPipeline(c.processTxPipeline)
 
 	return c
 }
 
-func (c *ClusterClient) Context() context.Context {
-	return c.ctx
-}
-
-func (c *ClusterClient) WithContext(ctx context.Context) *ClusterClient {
-	if ctx == nil {
-		panic("nil context")
-	}
-	clone := *c
-	clone.cmdable = clone.Process
-	clone.hooks.lock()
-	clone.ctx = ctx
-	return &clone
-}
-
 // Options returns read-only Options that were used to create the client.
 func (c *ClusterClient) Options() *ClusterOptions {
 	return c.opt
@@ -757,7 +881,7 @@ func (c *ClusterClient) Close() error {
 	return c.nodes.Close()
 }
 
-// Do creates a Cmd from the args and processes the cmd.
+// Do create a Cmd from the args and processes the cmd.
 func (c *ClusterClient) Do(ctx context.Context, args ...interface{}) *Cmd {
 	cmd := NewCmd(ctx, args...)
 	_ = c.Process(ctx, cmd)
@@ -765,13 +889,14 @@ func (c *ClusterClient) Do(ctx context.Context, args ...interface{}) *Cmd {
 }
 
 func (c *ClusterClient) Process(ctx context.Context, cmd Cmder) error {
-	return c.hooks.process(ctx, cmd, c.process)
+	err := c.hooks.process(ctx, cmd)
+	cmd.SetErr(err)
+	return err
 }
 
 func (c *ClusterClient) process(ctx context.Context, cmd Cmder) error {
-	cmdInfo := c.cmdInfo(cmd.Name())
-	slot := c.cmdSlot(cmd)
-
+	cmdInfo := c.cmdInfo(ctx, cmd.Name())
+	slot := c.cmdSlot(ctx, cmd)
 	var node *clusterNode
 	var ask bool
 	var lastErr error
@@ -791,12 +916,12 @@ func (c *ClusterClient) process(ctx context.Context, cmd Cmder) error {
 		}
 
 		if ask {
+			ask = false
+
 			pipe := node.Client.Pipeline()
 			_ = pipe.Process(ctx, NewCmd(ctx, "asking"))
 			_ = pipe.Process(ctx, cmd)
 			_, lastErr = pipe.Exec(ctx)
-			_ = pipe.Close()
-			ask = false
 		} else {
 			lastErr = node.Client.Process(ctx, cmd)
 		}
@@ -824,8 +949,10 @@ func (c *ClusterClient) process(ctx context.Context, cmd Cmder) error {
 		var addr string
 		moved, ask, addr = isMovedError(lastErr)
 		if moved || ask {
+			c.state.LazyReload()
+
 			var err error
-			node, err = c.nodes.Get(addr)
+			node, err = c.nodes.GetOrCreate(addr)
 			if err != nil {
 				return err
 			}
@@ -849,6 +976,10 @@ func (c *ClusterClient) process(ctx context.Context, cmd Cmder) error {
 	return lastErr
 }
 
+func (c *ClusterClient) OnNewNode(fn func(rdb *Client)) {
+	c.nodes.OnNewNode(fn)
+}
+
 // ForEachMaster concurrently calls the fn on each master node in the cluster.
 // It returns the first error if any.
 func (c *ClusterClient) ForEachMaster(
@@ -1022,7 +1153,7 @@ func (c *ClusterClient) loadState(ctx context.Context) (*clusterState, error) {
 	for _, idx := range rand.Perm(len(addrs)) {
 		addr := addrs[idx]
 
-		node, err := c.nodes.Get(addr)
+		node, err := c.nodes.GetOrCreate(addr)
 		if err != nil {
 			if firstErr == nil {
 				firstErr = err
@@ -1054,30 +1185,9 @@ func (c *ClusterClient) loadState(ctx context.Context) (*clusterState, error) {
 	return nil, firstErr
 }
 
-// reaper closes idle connections to the cluster.
-func (c *ClusterClient) reaper(idleCheckFrequency time.Duration) {
-	ticker := time.NewTicker(idleCheckFrequency)
-	defer ticker.Stop()
-
-	for range ticker.C {
-		nodes, err := c.nodes.All()
-		if err != nil {
-			break
-		}
-
-		for _, node := range nodes {
-			_, err := node.Client.connPool.(*pool.ConnPool).ReapStaleConns()
-			if err != nil {
-				internal.Logger.Printf(c.Context(), "ReapStaleConns failed: %s", err)
-			}
-		}
-	}
-}
-
 func (c *ClusterClient) Pipeline() Pipeliner {
 	pipe := Pipeline{
-		ctx:  c.ctx,
-		exec: c.processPipeline,
+		exec: pipelineExecer(c.hooks.processPipeline),
 	}
 	pipe.init()
 	return &pipe
@@ -1088,13 +1198,9 @@ func (c *ClusterClient) Pipelined(ctx context.Context, fn func(Pipeliner) error)
 }
 
 func (c *ClusterClient) processPipeline(ctx context.Context, cmds []Cmder) error {
-	return c.hooks.processPipeline(ctx, cmds, c._processPipeline)
-}
-
-func (c *ClusterClient) _processPipeline(ctx context.Context, cmds []Cmder) error {
 	cmdsMap := newCmdsMap()
-	err := c.mapCmdsByNode(ctx, cmdsMap, cmds)
-	if err != nil {
+
+	if err := c.mapCmdsByNode(ctx, cmdsMap, cmds); err != nil {
 		setCmdsErr(cmds, err)
 		return err
 	}
@@ -1114,18 +1220,7 @@ func (c *ClusterClient) _processPipeline(ctx context.Context, cmds []Cmder) erro
 			wg.Add(1)
 			go func(node *clusterNode, cmds []Cmder) {
 				defer wg.Done()
-
-				err := c._processPipelineNode(ctx, node, cmds, failedCmds)
-				if err == nil {
-					return
-				}
-				if attempt < c.opt.MaxRedirects {
-					if err := c.mapCmdsByNode(ctx, failedCmds, cmds); err != nil {
-						setCmdsErr(cmds, err)
-					}
-				} else {
-					setCmdsErr(cmds, err)
-				}
+				c.processPipelineNode(ctx, node, cmds, failedCmds)
 			}(node, cmds)
 		}
 
@@ -1145,9 +1240,9 @@ func (c *ClusterClient) mapCmdsByNode(ctx context.Context, cmdsMap *cmdsMap, cmd
 		return err
 	}
 
-	if c.opt.ReadOnly && c.cmdsAreReadOnly(cmds) {
+	if c.opt.ReadOnly && c.cmdsAreReadOnly(ctx, cmds) {
 		for _, cmd := range cmds {
-			slot := c.cmdSlot(cmd)
+			slot := c.cmdSlot(ctx, cmd)
 			node, err := c.slotReadOnlyNode(state, slot)
 			if err != nil {
 				return err
@@ -1158,7 +1253,7 @@ func (c *ClusterClient) mapCmdsByNode(ctx context.Context, cmdsMap *cmdsMap, cmd
 	}
 
 	for _, cmd := range cmds {
-		slot := c.cmdSlot(cmd)
+		slot := c.cmdSlot(ctx, cmd)
 		node, err := state.slotMasterNode(slot)
 		if err != nil {
 			return err
@@ -1168,9 +1263,9 @@ func (c *ClusterClient) mapCmdsByNode(ctx context.Context, cmdsMap *cmdsMap, cmd
 	return nil
 }
 
-func (c *ClusterClient) cmdsAreReadOnly(cmds []Cmder) bool {
+func (c *ClusterClient) cmdsAreReadOnly(ctx context.Context, cmds []Cmder) bool {
 	for _, cmd := range cmds {
-		cmdInfo := c.cmdInfo(cmd.Name())
+		cmdInfo := c.cmdInfo(ctx, cmd.Name())
 		if cmdInfo == nil || !cmdInfo.ReadOnly {
 			return false
 		}
@@ -1178,22 +1273,38 @@ func (c *ClusterClient) cmdsAreReadOnly(cmds []Cmder) bool {
 	return true
 }
 
-func (c *ClusterClient) _processPipelineNode(
+func (c *ClusterClient) processPipelineNode(
 	ctx context.Context, node *clusterNode, cmds []Cmder, failedCmds *cmdsMap,
-) error {
-	return node.Client.hooks.processPipeline(ctx, cmds, func(ctx context.Context, cmds []Cmder) error {
-		return node.Client.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
-			err := cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
-				return writeCmds(wr, cmds)
-			})
-			if err != nil {
-				return err
-			}
+) {
+	_ = node.Client.hooks.withProcessPipelineHook(ctx, cmds, func(ctx context.Context, cmds []Cmder) error {
+		cn, err := node.Client.getConn(ctx)
+		if err != nil {
+			_ = c.mapCmdsByNode(ctx, failedCmds, cmds)
+			setCmdsErr(cmds, err)
+			return err
+		}
 
-			return cn.WithReader(ctx, c.opt.ReadTimeout, func(rd *proto.Reader) error {
-				return c.pipelineReadCmds(ctx, node, rd, cmds, failedCmds)
-			})
-		})
+		err = c.processPipelineNodeConn(ctx, node, cn, cmds, failedCmds)
+		node.Client.releaseConn(ctx, cn, err)
+		return err
+	})
+}
+
+func (c *ClusterClient) processPipelineNodeConn(
+	ctx context.Context, node *clusterNode, cn *pool.Conn, cmds []Cmder, failedCmds *cmdsMap,
+) error {
+	if err := cn.WithWriter(c.context(ctx), c.opt.WriteTimeout, func(wr *proto.Writer) error {
+		return writeCmds(wr, cmds)
+	}); err != nil {
+		if shouldRetry(err, true) {
+			_ = c.mapCmdsByNode(ctx, failedCmds, cmds)
+		}
+		setCmdsErr(cmds, err)
+		return err
+	}
+
+	return cn.WithReader(c.context(ctx), c.opt.ReadTimeout, func(rd *proto.Reader) error {
+		return c.pipelineReadCmds(ctx, node, rd, cmds, failedCmds)
 	})
 }
 
@@ -1204,7 +1315,7 @@ func (c *ClusterClient) pipelineReadCmds(
 	cmds []Cmder,
 	failedCmds *cmdsMap,
 ) error {
-	for _, cmd := range cmds {
+	for i, cmd := range cmds {
 		err := cmd.readReply(rd)
 		cmd.SetErr(err)
 
@@ -1216,15 +1327,24 @@ func (c *ClusterClient) pipelineReadCmds(
 			continue
 		}
 
-		if c.opt.ReadOnly && isLoadingError(err) {
+		if c.opt.ReadOnly {
 			node.MarkAsFailing()
+		}
+
+		if !isRedisError(err) {
+			if shouldRetry(err, true) {
+				_ = c.mapCmdsByNode(ctx, failedCmds, cmds)
+			}
+			setCmdsErr(cmds[i+1:], err)
 			return err
 		}
-		if isRedisError(err) {
-			continue
-		}
+	}
+
+	if err := cmds[0].Err(); err != nil && shouldRetry(err, true) {
+		_ = c.mapCmdsByNode(ctx, failedCmds, cmds)
 		return err
 	}
+
 	return nil
 }
 
@@ -1236,7 +1356,7 @@ func (c *ClusterClient) checkMovedErr(
 		return false
 	}
 
-	node, err := c.nodes.Get(addr)
+	node, err := c.nodes.GetOrCreate(addr)
 	if err != nil {
 		return false
 	}
@@ -1258,8 +1378,10 @@ func (c *ClusterClient) checkMovedErr(
 // TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC.
 func (c *ClusterClient) TxPipeline() Pipeliner {
 	pipe := Pipeline{
-		ctx:  c.ctx,
-		exec: c.processTxPipeline,
+		exec: func(ctx context.Context, cmds []Cmder) error {
+			cmds = wrapMultiExec(ctx, cmds)
+			return c.hooks.processTxPipeline(ctx, cmds)
+		},
 	}
 	pipe.init()
 	return &pipe
@@ -1270,10 +1392,6 @@ func (c *ClusterClient) TxPipelined(ctx context.Context, fn func(Pipeliner) erro
 }
 
 func (c *ClusterClient) processTxPipeline(ctx context.Context, cmds []Cmder) error {
-	return c.hooks.processTxPipeline(ctx, cmds, c._processTxPipeline)
-}
-
-func (c *ClusterClient) _processTxPipeline(ctx context.Context, cmds []Cmder) error {
 	// Trim multi .. exec.
 	cmds = cmds[1 : len(cmds)-1]
 
@@ -1283,7 +1401,7 @@ func (c *ClusterClient) _processTxPipeline(ctx context.Context, cmds []Cmder) er
 		return err
 	}
 
-	cmdsMap := c.mapCmdsBySlot(cmds)
+	cmdsMap := c.mapCmdsBySlot(ctx, cmds)
 	for slot, cmds := range cmdsMap {
 		node, err := state.slotMasterNode(slot)
 		if err != nil {
@@ -1307,19 +1425,7 @@ func (c *ClusterClient) _processTxPipeline(ctx context.Context, cmds []Cmder) er
 				wg.Add(1)
 				go func(node *clusterNode, cmds []Cmder) {
 					defer wg.Done()
-
-					err := c._processTxPipelineNode(ctx, node, cmds, failedCmds)
-					if err == nil {
-						return
-					}
-
-					if attempt < c.opt.MaxRedirects {
-						if err := c.mapCmdsByNode(ctx, failedCmds, cmds); err != nil {
-							setCmdsErr(cmds, err)
-						}
-					} else {
-						setCmdsErr(cmds, err)
-					}
+					c.processTxPipelineNode(ctx, node, cmds, failedCmds)
 				}(node, cmds)
 			}
 
@@ -1334,44 +1440,65 @@ func (c *ClusterClient) _processTxPipeline(ctx context.Context, cmds []Cmder) er
 	return cmdsFirstErr(cmds)
 }
 
-func (c *ClusterClient) mapCmdsBySlot(cmds []Cmder) map[int][]Cmder {
+func (c *ClusterClient) mapCmdsBySlot(ctx context.Context, cmds []Cmder) map[int][]Cmder {
 	cmdsMap := make(map[int][]Cmder)
 	for _, cmd := range cmds {
-		slot := c.cmdSlot(cmd)
+		slot := c.cmdSlot(ctx, cmd)
 		cmdsMap[slot] = append(cmdsMap[slot], cmd)
 	}
 	return cmdsMap
 }
 
-func (c *ClusterClient) _processTxPipelineNode(
+func (c *ClusterClient) processTxPipelineNode(
 	ctx context.Context, node *clusterNode, cmds []Cmder, failedCmds *cmdsMap,
+) {
+	cmds = wrapMultiExec(ctx, cmds)
+	_ = node.Client.hooks.withProcessPipelineHook(ctx, cmds, func(ctx context.Context, cmds []Cmder) error {
+		cn, err := node.Client.getConn(ctx)
+		if err != nil {
+			_ = c.mapCmdsByNode(ctx, failedCmds, cmds)
+			setCmdsErr(cmds, err)
+			return err
+		}
+
+		err = c.processTxPipelineNodeConn(ctx, node, cn, cmds, failedCmds)
+		node.Client.releaseConn(ctx, cn, err)
+		return err
+	})
+}
+
+func (c *ClusterClient) processTxPipelineNodeConn(
+	ctx context.Context, node *clusterNode, cn *pool.Conn, cmds []Cmder, failedCmds *cmdsMap,
 ) error {
-	return node.Client.hooks.processTxPipeline(ctx, cmds, func(ctx context.Context, cmds []Cmder) error {
-		return node.Client.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
-			err := cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
-				return writeCmds(wr, cmds)
-			})
-			if err != nil {
-				return err
+	if err := cn.WithWriter(c.context(ctx), c.opt.WriteTimeout, func(wr *proto.Writer) error {
+		return writeCmds(wr, cmds)
+	}); err != nil {
+		if shouldRetry(err, true) {
+			_ = c.mapCmdsByNode(ctx, failedCmds, cmds)
+		}
+		setCmdsErr(cmds, err)
+		return err
+	}
+
+	return cn.WithReader(c.context(ctx), c.opt.ReadTimeout, func(rd *proto.Reader) error {
+		statusCmd := cmds[0].(*StatusCmd)
+		// Trim multi and exec.
+		trimmedCmds := cmds[1 : len(cmds)-1]
+
+		if err := c.txPipelineReadQueued(
+			ctx, rd, statusCmd, trimmedCmds, failedCmds,
+		); err != nil {
+			setCmdsErr(cmds, err)
+
+			moved, ask, addr := isMovedError(err)
+			if moved || ask {
+				return c.cmdsMoved(ctx, trimmedCmds, moved, ask, addr, failedCmds)
 			}
 
-			return cn.WithReader(ctx, c.opt.ReadTimeout, func(rd *proto.Reader) error {
-				statusCmd := cmds[0].(*StatusCmd)
-				// Trim multi and exec.
-				cmds = cmds[1 : len(cmds)-1]
+			return err
+		}
 
-				err := c.txPipelineReadQueued(ctx, rd, statusCmd, cmds, failedCmds)
-				if err != nil {
-					moved, ask, addr := isMovedError(err)
-					if moved || ask {
-						return c.cmdsMoved(ctx, cmds, moved, ask, addr, failedCmds)
-					}
-					return err
-				}
-
-				return pipelineReadCmds(rd, cmds)
-			})
-		})
+		return pipelineReadCmds(rd, trimmedCmds)
 	})
 }
 
@@ -1404,12 +1531,7 @@ func (c *ClusterClient) txPipelineReadQueued(
 		return err
 	}
 
-	switch line[0] {
-	case proto.ErrorReply:
-		return proto.ParseErrorReply(line)
-	case proto.ArrayReply:
-		// ok
-	default:
+	if line[0] != proto.RespArray {
 		return fmt.Errorf("redis: expected '*', but got line %q", line)
 	}
 
@@ -1422,7 +1544,7 @@ func (c *ClusterClient) cmdsMoved(
 	addr string,
 	failedCmds *cmdsMap,
 ) error {
-	node, err := c.nodes.Get(addr)
+	node, err := c.nodes.GetOrCreate(addr)
 	if err != nil {
 		return err
 	}
@@ -1477,7 +1599,7 @@ func (c *ClusterClient) Watch(ctx context.Context, fn func(*Tx) error, keys ...s
 
 		moved, ask, addr := isMovedError(err)
 		if moved || ask {
-			node, err = c.nodes.Get(addr)
+			node, err = c.nodes.GetOrCreate(addr)
 			if err != nil {
 				return err
 			}
@@ -1566,6 +1688,15 @@ func (c *ClusterClient) PSubscribe(ctx context.Context, channels ...string) *Pub
 	return pubsub
 }
 
+// SSubscribe Subscribes the client to the specified shard channels.
+func (c *ClusterClient) SSubscribe(ctx context.Context, channels ...string) *PubSub {
+	pubsub := c.pubSub()
+	if len(channels) > 0 {
+		_ = pubsub.SSubscribe(ctx, channels...)
+	}
+	return pubsub
+}
+
 func (c *ClusterClient) retryBackoff(attempt int) time.Duration {
 	return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff)
 }
@@ -1589,7 +1720,7 @@ func (c *ClusterClient) cmdsInfo(ctx context.Context) (map[string]*CommandInfo,
 	for _, idx := range perm {
 		addr := addrs[idx]
 
-		node, err := c.nodes.Get(addr)
+		node, err := c.nodes.GetOrCreate(addr)
 		if err != nil {
 			if firstErr == nil {
 				firstErr = err
@@ -1612,26 +1743,27 @@ func (c *ClusterClient) cmdsInfo(ctx context.Context) (map[string]*CommandInfo,
 	return nil, firstErr
 }
 
-func (c *ClusterClient) cmdInfo(name string) *CommandInfo {
-	cmdsInfo, err := c.cmdsInfoCache.Get(c.ctx)
+func (c *ClusterClient) cmdInfo(ctx context.Context, name string) *CommandInfo {
+	cmdsInfo, err := c.cmdsInfoCache.Get(ctx)
 	if err != nil {
+		internal.Logger.Printf(context.TODO(), "getting command info: %s", err)
 		return nil
 	}
 
 	info := cmdsInfo[name]
 	if info == nil {
-		internal.Logger.Printf(c.Context(), "info for cmd=%s not found", name)
+		internal.Logger.Printf(context.TODO(), "info for cmd=%s not found", name)
 	}
 	return info
 }
 
-func (c *ClusterClient) cmdSlot(cmd Cmder) int {
+func (c *ClusterClient) cmdSlot(ctx context.Context, cmd Cmder) int {
 	args := cmd.Args()
 	if args[0] == "cluster" && args[1] == "getkeysinslot" {
 		return args[2].(int)
 	}
 
-	cmdInfo := c.cmdInfo(cmd.Name())
+	cmdInfo := c.cmdInfo(ctx, cmd.Name())
 	return cmdSlot(cmd, cmdFirstKeyPos(cmd, cmdInfo))
 }
 
@@ -1659,7 +1791,7 @@ func (c *ClusterClient) cmdNode(
 	return state.slotMasterNode(slot)
 }
 
-func (c *clusterClient) slotReadOnlyNode(state *clusterState, slot int) (*clusterNode, error) {
+func (c *ClusterClient) slotReadOnlyNode(state *clusterState, slot int) (*clusterNode, error) {
 	if c.opt.RouteByLatency {
 		return state.slotClosestNode(slot)
 	}
@@ -1706,6 +1838,13 @@ func (c *ClusterClient) MasterForKey(ctx context.Context, key string) (*Client,
 	return node.Client, err
 }
 
+func (c *ClusterClient) context(ctx context.Context) context.Context {
+	if c.opt.ContextTimeoutEnabled {
+		return ctx
+	}
+	return context.Background()
+}
+
 func appendUniqueNode(nodes []*clusterNode, node *clusterNode) []*clusterNode {
 	for _, n := range nodes {
 		if n == node {

cluster_commands.go

@@ -8,7 +8,7 @@ import (
 
 func (c *ClusterClient) DBSize(ctx context.Context) *IntCmd {
 	cmd := NewIntCmd(ctx, "dbsize")
-	_ = c.hooks.process(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+	_ = c.hooks.withProcessHook(ctx, cmd, func(ctx context.Context, _ Cmder) error {
 		var size int64
 		err := c.ForEachMaster(ctx, func(ctx context.Context, master *Client) error {
 			n, err := master.DBSize(ctx).Result()
@@ -30,7 +30,7 @@ func (c *ClusterClient) DBSize(ctx context.Context) *IntCmd {
 
 func (c *ClusterClient) ScriptLoad(ctx context.Context, script string) *StringCmd {
 	cmd := NewStringCmd(ctx, "script", "load", script)
-	_ = c.hooks.process(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+	_ = c.hooks.withProcessHook(ctx, cmd, func(ctx context.Context, _ Cmder) error {
 		mu := &sync.Mutex{}
 		err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
 			val, err := shard.ScriptLoad(ctx, script).Result()
@@ -56,7 +56,7 @@ func (c *ClusterClient) ScriptLoad(ctx context.Context, script string) *StringCm
 
 func (c *ClusterClient) ScriptFlush(ctx context.Context) *StatusCmd {
 	cmd := NewStatusCmd(ctx, "script", "flush")
-	_ = c.hooks.process(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+	_ = c.hooks.withProcessHook(ctx, cmd, func(ctx context.Context, _ Cmder) error {
 		err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
 			return shard.ScriptFlush(ctx).Err()
 		})
@@ -82,8 +82,8 @@ func (c *ClusterClient) ScriptExists(ctx context.Context, hashes ...string) *Boo
 		result[i] = true
 	}
 
-	_ = c.hooks.process(ctx, cmd, func(ctx context.Context, _ Cmder) error {
-		mu := &sync.Mutex{}
+	_ = c.hooks.withProcessHook(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+		var mu sync.Mutex
 		err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
 			val, err := shard.ScriptExists(ctx, hashes...).Result()
 			if err != nil {

cluster_test.go

@@ -2,18 +2,22 @@ package redis_test
 
 import (
 	"context"
+	"crypto/tls"
+	"errors"
 	"fmt"
 	"net"
 	"strconv"
 	"strings"
 	"sync"
+	"testing"
 	"time"
 
-	"github.com/go-redis/redis/v8"
-	"github.com/go-redis/redis/v8/internal/hashtag"
-
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+	"github.com/stretchr/testify/assert"
+
+	"github.com/go-redis/redis/v9"
+	"github.com/go-redis/redis/v9/internal/hashtag"
 )
 
 type clusterScenario struct {
@@ -82,8 +86,10 @@ func (s *clusterScenario) newClusterClient(
 
 func (s *clusterScenario) Close() error {
 	for _, port := range s.ports {
-		processes[port].Close()
-		delete(processes, port)
+		if process, ok := processes[port]; ok {
+			process.Close()
+			delete(processes, port)
+		}
 	}
 	return nil
 }
@@ -237,14 +243,6 @@ var _ = Describe("ClusterClient", func() {
 	var client *redis.ClusterClient
 
 	assertClusterClient := func() {
-		It("supports WithContext", func() {
-			ctx, cancel := context.WithCancel(ctx)
-			cancel()
-
-			err := client.Ping(ctx).Err()
-			Expect(err).To(MatchError("context canceled"))
-		})
-
 		It("should GET/SET/DEL", func() {
 			err := client.Get(ctx, "A").Err()
 			Expect(err).To(Equal(redis.Nil))
@@ -515,9 +513,7 @@ var _ = Describe("ClusterClient", func() {
 					pipe = client.Pipeline().(*redis.Pipeline)
 				})
 
-				AfterEach(func() {
-					Expect(pipe.Close()).NotTo(HaveOccurred())
-				})
+				AfterEach(func() {})
 
 				assertPipeline()
 			})
@@ -527,9 +523,7 @@ var _ = Describe("ClusterClient", func() {
 					pipe = client.TxPipeline().(*redis.Pipeline)
 				})
 
-				AfterEach(func() {
-					Expect(pipe.Close()).NotTo(HaveOccurred())
-				})
+				AfterEach(func() {})
 
 				assertPipeline()
 			})
@@ -559,6 +553,30 @@ var _ = Describe("ClusterClient", func() {
 			}, 30*time.Second).ShouldNot(HaveOccurred())
 		})
 
+		It("supports sharded PubSub", func() {
+			pubsub := client.SSubscribe(ctx, "mychannel")
+			defer pubsub.Close()
+
+			Eventually(func() error {
+				_, err := client.SPublish(ctx, "mychannel", "hello").Result()
+				if err != nil {
+					return err
+				}
+
+				msg, err := pubsub.ReceiveTimeout(ctx, time.Second)
+				if err != nil {
+					return err
+				}
+
+				_, ok := msg.(*redis.Message)
+				if !ok {
+					return fmt.Errorf("got %T, wanted *redis.Message", msg)
+				}
+
+				return nil
+			}, 30*time.Second).ShouldNot(HaveOccurred())
+		})
+
 		It("supports PubSub.Ping without channels", func() {
 			pubsub := client.Subscribe(ctx)
 			defer pubsub.Close()
@@ -571,6 +589,7 @@ var _ = Describe("ClusterClient", func() {
 	Describe("ClusterClient", func() {
 		BeforeEach(func() {
 			opt = redisClusterOptions()
+			opt.ClientName = "cluster_hi"
 			client = cluster.newClusterClient(ctx, opt)
 
 			err := client.ForEachMaster(ctx, func(ctx context.Context, master *redis.Client) error {
@@ -661,6 +680,20 @@ var _ = Describe("ClusterClient", func() {
 			Expect(assertSlotsEqual(res, wanted)).NotTo(HaveOccurred())
 		})
 
+		It("should cluster client setname", func() {
+			err := client.ForEachShard(ctx, func(ctx context.Context, c *redis.Client) error {
+				return c.Ping(ctx).Err()
+			})
+			Expect(err).NotTo(HaveOccurred())
+
+			_ = client.ForEachShard(ctx, func(ctx context.Context, c *redis.Client) error {
+				val, err := c.ClientList(ctx).Result()
+				Expect(err).NotTo(HaveOccurred())
+				Expect(val).Should(ContainSubstring("name=cluster_hi"))
+				return nil
+			})
+		})
+
 		It("should CLUSTER NODES", func() {
 			res, err := client.ClusterNodes(ctx).Result()
 			Expect(err).NotTo(HaveOccurred())
@@ -737,6 +770,9 @@ var _ = Describe("ClusterClient", func() {
 		})
 
 		It("supports Process hook", func() {
+			testCtx, cancel := context.WithCancel(ctx)
+			defer cancel()
+
 			err := client.Ping(ctx).Err()
 			Expect(err).NotTo(HaveOccurred())
 
@@ -748,29 +784,47 @@ var _ = Describe("ClusterClient", func() {
 			var stack []string
 
 			clusterHook := &hook{
-				beforeProcess: func(ctx context.Context, cmd redis.Cmder) (context.Context, error) {
-					Expect(cmd.String()).To(Equal("ping: "))
-					stack = append(stack, "cluster.BeforeProcess")
-					return ctx, nil
-				},
-				afterProcess: func(ctx context.Context, cmd redis.Cmder) error {
-					Expect(cmd.String()).To(Equal("ping: PONG"))
-					stack = append(stack, "cluster.AfterProcess")
-					return nil
+				processHook: func(hook redis.ProcessHook) redis.ProcessHook {
+					return func(ctx context.Context, cmd redis.Cmder) error {
+						select {
+						case <-testCtx.Done():
+							return hook(ctx, cmd)
+						default:
+						}
+
+						Expect(cmd.String()).To(Equal("ping: "))
+						stack = append(stack, "cluster.BeforeProcess")
+
+						err := hook(ctx, cmd)
+
+						Expect(cmd.String()).To(Equal("ping: PONG"))
+						stack = append(stack, "cluster.AfterProcess")
+
+						return err
+					}
 				},
 			}
 			client.AddHook(clusterHook)
 
 			nodeHook := &hook{
-				beforeProcess: func(ctx context.Context, cmd redis.Cmder) (context.Context, error) {
-					Expect(cmd.String()).To(Equal("ping: "))
-					stack = append(stack, "shard.BeforeProcess")
-					return ctx, nil
-				},
-				afterProcess: func(ctx context.Context, cmd redis.Cmder) error {
-					Expect(cmd.String()).To(Equal("ping: PONG"))
-					stack = append(stack, "shard.AfterProcess")
-					return nil
+				processHook: func(hook redis.ProcessHook) redis.ProcessHook {
+					return func(ctx context.Context, cmd redis.Cmder) error {
+						select {
+						case <-testCtx.Done():
+							return hook(ctx, cmd)
+						default:
+						}
+
+						Expect(cmd.String()).To(Equal("ping: "))
+						stack = append(stack, "shard.BeforeProcess")
+
+						err := hook(ctx, cmd)
+
+						Expect(cmd.String()).To(Equal("ping: PONG"))
+						stack = append(stack, "shard.AfterProcess")
+
+						return err
+					}
 				},
 			}
 
@@ -787,11 +841,6 @@ var _ = Describe("ClusterClient", func() {
 				"shard.AfterProcess",
 				"cluster.AfterProcess",
 			}))
-
-			clusterHook.beforeProcess = nil
-			clusterHook.afterProcess = nil
-			nodeHook.beforeProcess = nil
-			nodeHook.afterProcess = nil
 		})
 
 		It("supports Pipeline hook", func() {
@@ -806,33 +855,39 @@ var _ = Describe("ClusterClient", func() {
 			var stack []string
 
 			client.AddHook(&hook{
-				beforeProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
-					Expect(cmds).To(HaveLen(1))
-					Expect(cmds[0].String()).To(Equal("ping: "))
-					stack = append(stack, "cluster.BeforeProcessPipeline")
-					return ctx, nil
-				},
-				afterProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) error {
-					Expect(cmds).To(HaveLen(1))
-					Expect(cmds[0].String()).To(Equal("ping: PONG"))
-					stack = append(stack, "cluster.AfterProcessPipeline")
-					return nil
+				processPipelineHook: func(hook redis.ProcessPipelineHook) redis.ProcessPipelineHook {
+					return func(ctx context.Context, cmds []redis.Cmder) error {
+						Expect(cmds).To(HaveLen(1))
+						Expect(cmds[0].String()).To(Equal("ping: "))
+						stack = append(stack, "cluster.BeforeProcessPipeline")
+
+						err := hook(ctx, cmds)
+
+						Expect(cmds).To(HaveLen(1))
+						Expect(cmds[0].String()).To(Equal("ping: PONG"))
+						stack = append(stack, "cluster.AfterProcessPipeline")
+
+						return err
+					}
 				},
 			})
 
 			_ = client.ForEachShard(ctx, func(ctx context.Context, node *redis.Client) error {
 				node.AddHook(&hook{
-					beforeProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
-						Expect(cmds).To(HaveLen(1))
-						Expect(cmds[0].String()).To(Equal("ping: "))
-						stack = append(stack, "shard.BeforeProcessPipeline")
-						return ctx, nil
-					},
-					afterProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) error {
-						Expect(cmds).To(HaveLen(1))
-						Expect(cmds[0].String()).To(Equal("ping: PONG"))
-						stack = append(stack, "shard.AfterProcessPipeline")
-						return nil
+					processPipelineHook: func(hook redis.ProcessPipelineHook) redis.ProcessPipelineHook {
+						return func(ctx context.Context, cmds []redis.Cmder) error {
+							Expect(cmds).To(HaveLen(1))
+							Expect(cmds[0].String()).To(Equal("ping: "))
+							stack = append(stack, "shard.BeforeProcessPipeline")
+
+							err := hook(ctx, cmds)
+
+							Expect(cmds).To(HaveLen(1))
+							Expect(cmds[0].String()).To(Equal("ping: PONG"))
+							stack = append(stack, "shard.AfterProcessPipeline")
+
+							return err
+						}
 					},
 				})
 				return nil
@@ -863,33 +918,39 @@ var _ = Describe("ClusterClient", func() {
 			var stack []string
 
 			client.AddHook(&hook{
-				beforeProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
-					Expect(cmds).To(HaveLen(3))
-					Expect(cmds[1].String()).To(Equal("ping: "))
-					stack = append(stack, "cluster.BeforeProcessPipeline")
-					return ctx, nil
-				},
-				afterProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) error {
-					Expect(cmds).To(HaveLen(3))
-					Expect(cmds[1].String()).To(Equal("ping: PONG"))
-					stack = append(stack, "cluster.AfterProcessPipeline")
-					return nil
+				processPipelineHook: func(hook redis.ProcessPipelineHook) redis.ProcessPipelineHook {
+					return func(ctx context.Context, cmds []redis.Cmder) error {
+						Expect(cmds).To(HaveLen(3))
+						Expect(cmds[1].String()).To(Equal("ping: "))
+						stack = append(stack, "cluster.BeforeProcessPipeline")
+
+						err := hook(ctx, cmds)
+
+						Expect(cmds).To(HaveLen(3))
+						Expect(cmds[1].String()).To(Equal("ping: PONG"))
+						stack = append(stack, "cluster.AfterProcessPipeline")
+
+						return err
+					}
 				},
 			})
 
 			_ = client.ForEachShard(ctx, func(ctx context.Context, node *redis.Client) error {
 				node.AddHook(&hook{
-					beforeProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
-						Expect(cmds).To(HaveLen(3))
-						Expect(cmds[1].String()).To(Equal("ping: "))
-						stack = append(stack, "shard.BeforeProcessPipeline")
-						return ctx, nil
-					},
-					afterProcessPipeline: func(ctx context.Context, cmds []redis.Cmder) error {
-						Expect(cmds).To(HaveLen(3))
-						Expect(cmds[1].String()).To(Equal("ping: PONG"))
-						stack = append(stack, "shard.AfterProcessPipeline")
-						return nil
+					processPipelineHook: func(hook redis.ProcessPipelineHook) redis.ProcessPipelineHook {
+						return func(ctx context.Context, cmds []redis.Cmder) error {
+							Expect(cmds).To(HaveLen(3))
+							Expect(cmds[1].String()).To(Equal("ping: "))
+							stack = append(stack, "shard.BeforeProcessPipeline")
+
+							err := hook(ctx, cmds)
+
+							Expect(cmds).To(HaveLen(3))
+							Expect(cmds[1].String()).To(Equal("ping: PONG"))
+							stack = append(stack, "shard.AfterProcessPipeline")
+
+							return err
+						}
 					},
 				})
 				return nil
@@ -1182,16 +1243,17 @@ var _ = Describe("ClusterClient with unavailable Cluster", func() {
 	var client *redis.ClusterClient
 
 	BeforeEach(func() {
-		for _, node := range cluster.clients {
-			err := node.ClientPause(ctx, 5*time.Second).Err()
-			Expect(err).NotTo(HaveOccurred())
-		}
-
 		opt := redisClusterOptions()
 		opt.ReadTimeout = 250 * time.Millisecond
 		opt.WriteTimeout = 250 * time.Millisecond
 		opt.MaxRedirects = 1
 		client = cluster.newClusterClientUnstable(opt)
+		Expect(client.Ping(ctx).Err()).NotTo(HaveOccurred())
+
+		for _, node := range cluster.clients {
+			err := node.ClientPause(ctx, 5*time.Second).Err()
+			Expect(err).NotTo(HaveOccurred())
+		}
 	})
 
 	AfterEach(func() {
@@ -1257,27 +1319,182 @@ var _ = Describe("ClusterClient timeout", func() {
 	Context("read/write timeout", func() {
 		BeforeEach(func() {
 			opt := redisClusterOptions()
-			opt.ReadTimeout = 250 * time.Millisecond
-			opt.WriteTimeout = 250 * time.Millisecond
-			opt.MaxRedirects = 1
 			client = cluster.newClusterClient(ctx, opt)
 
 			err := client.ForEachShard(ctx, func(ctx context.Context, client *redis.Client) error {
-				return client.ClientPause(ctx, pause).Err()
+				err := client.ClientPause(ctx, pause).Err()
+
+				opt := client.Options()
+				opt.ReadTimeout = time.Nanosecond
+				opt.WriteTimeout = time.Nanosecond
+
+				return err
 			})
 			Expect(err).NotTo(HaveOccurred())
+
+			// Overwrite timeouts after the client is initialized.
+			opt.ReadTimeout = time.Nanosecond
+			opt.WriteTimeout = time.Nanosecond
+			opt.MaxRedirects = 0
 		})
 
 		AfterEach(func() {
 			_ = client.ForEachShard(ctx, func(ctx context.Context, client *redis.Client) error {
 				defer GinkgoRecover()
+
+				opt := client.Options()
+				opt.ReadTimeout = time.Second
+				opt.WriteTimeout = time.Second
+
 				Eventually(func() error {
 					return client.Ping(ctx).Err()
 				}, 2*pause).ShouldNot(HaveOccurred())
 				return nil
 			})
+
+			err := client.Close()
+			Expect(err).NotTo(HaveOccurred())
 		})
 
 		testTimeout()
 	})
 })
+
+func TestParseClusterURL(t *testing.T) {
+	cases := []struct {
+		test string
+		url  string
+		o    *redis.ClusterOptions // expected value
+		err  error
+	}{
+		{
+			test: "ParseRedisURL",
+			url:  "redis://localhost:123",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123"}},
+		}, {
+			test: "ParseRedissURL",
+			url:  "rediss://localhost:123",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123"}, TLSConfig: &tls.Config{ServerName: "localhost"}},
+		}, {
+			test: "MissingRedisPort",
+			url:  "redis://localhost",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:6379"}},
+		}, {
+			test: "MissingRedissPort",
+			url:  "rediss://localhost",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:6379"}, TLSConfig: &tls.Config{ServerName: "localhost"}},
+		}, {
+			test: "MultipleRedisURLs",
+			url:  "redis://localhost:123?addr=localhost:1234&addr=localhost:12345",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123", "localhost:1234", "localhost:12345"}},
+		}, {
+			test: "MultipleRedissURLs",
+			url:  "rediss://localhost:123?addr=localhost:1234&addr=localhost:12345",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123", "localhost:1234", "localhost:12345"}, TLSConfig: &tls.Config{ServerName: "localhost"}},
+		}, {
+			test: "OnlyPassword",
+			url:  "redis://:bar@localhost:123",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123"}, Password: "bar"},
+		}, {
+			test: "OnlyUser",
+			url:  "redis://foo@localhost:123",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123"}, Username: "foo"},
+		}, {
+			test: "RedisUsernamePassword",
+			url:  "redis://foo:bar@localhost:123",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123"}, Username: "foo", Password: "bar"},
+		}, {
+			test: "RedissUsernamePassword",
+			url:  "rediss://foo:bar@localhost:123?addr=localhost:1234",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123", "localhost:1234"}, Username: "foo", Password: "bar", TLSConfig: &tls.Config{ServerName: "localhost"}},
+		}, {
+			test: "QueryParameters",
+			url:  "redis://localhost:123?read_timeout=2&pool_fifo=true&addr=localhost:1234",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123", "localhost:1234"}, ReadTimeout: 2 * time.Second, PoolFIFO: true},
+		}, {
+			test: "DisabledTimeout",
+			url:  "redis://localhost:123?conn_max_idle_time=0",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123"}, ConnMaxIdleTime: -1},
+		}, {
+			test: "DisabledTimeoutNeg",
+			url:  "redis://localhost:123?conn_max_idle_time=-1",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123"}, ConnMaxIdleTime: -1},
+		}, {
+			test: "UseDefault",
+			url:  "redis://localhost:123?conn_max_idle_time=",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123"}, ConnMaxIdleTime: 0},
+		}, {
+			test: "ClientName",
+			url:  "redis://localhost:123?client_name=cluster_hi",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123"}, ClientName: "cluster_hi"},
+		}, {
+			test: "UseDefaultMissing=",
+			url:  "redis://localhost:123?conn_max_idle_time",
+			o:    &redis.ClusterOptions{Addrs: []string{"localhost:123"}, ConnMaxIdleTime: 0},
+		}, {
+			test: "InvalidQueryAddr",
+			url:  "rediss://foo:bar@localhost:123?addr=rediss://foo:barr@localhost:1234",
+			err:  errors.New(`redis: unable to parse addr param: rediss://foo:barr@localhost:1234`),
+		}, {
+			test: "InvalidInt",
+			url:  "redis://localhost?pool_size=five",
+			err:  errors.New(`redis: invalid pool_size number: strconv.Atoi: parsing "five": invalid syntax`),
+		}, {
+			test: "InvalidBool",
+			url:  "redis://localhost?pool_fifo=yes",
+			err:  errors.New(`redis: invalid pool_fifo boolean: expected true/false/1/0 or an empty string, got "yes"`),
+		}, {
+			test: "UnknownParam",
+			url:  "redis://localhost?abc=123",
+			err:  errors.New("redis: unexpected option: abc"),
+		}, {
+			test: "InvalidScheme",
+			url:  "https://google.com",
+			err:  errors.New("redis: invalid URL scheme: https"),
+		},
+	}
+
+	for i := range cases {
+		tc := cases[i]
+		t.Run(tc.test, func(t *testing.T) {
+			t.Parallel()
+
+			actual, err := redis.ParseClusterURL(tc.url)
+			if tc.err == nil && err != nil {
+				t.Fatalf("unexpected error: %q", err)
+				return
+			}
+			if tc.err != nil && err == nil {
+				t.Fatalf("expected error: got %+v", actual)
+				return
+			}
+			if tc.err != nil && err != nil {
+				if tc.err.Error() != err.Error() {
+					t.Fatalf("got %q, expected %q", err, tc.err)
+				}
+				return
+			}
+			comprareOptions(t, actual, tc.o)
+		})
+	}
+}
+
+func comprareOptions(t *testing.T, actual, expected *redis.ClusterOptions) {
+	t.Helper()
+	assert.Equal(t, expected.Addrs, actual.Addrs)
+	assert.Equal(t, expected.TLSConfig, actual.TLSConfig)
+	assert.Equal(t, expected.Username, actual.Username)
+	assert.Equal(t, expected.Password, actual.Password)
+	assert.Equal(t, expected.MaxRetries, actual.MaxRetries)
+	assert.Equal(t, expected.MinRetryBackoff, actual.MinRetryBackoff)
+	assert.Equal(t, expected.MaxRetryBackoff, actual.MaxRetryBackoff)
+	assert.Equal(t, expected.DialTimeout, actual.DialTimeout)
+	assert.Equal(t, expected.ReadTimeout, actual.ReadTimeout)
+	assert.Equal(t, expected.WriteTimeout, actual.WriteTimeout)
+	assert.Equal(t, expected.PoolFIFO, actual.PoolFIFO)
+	assert.Equal(t, expected.PoolSize, actual.PoolSize)
+	assert.Equal(t, expected.MinIdleConns, actual.MinIdleConns)
+	assert.Equal(t, expected.ConnMaxLifetime, actual.ConnMaxLifetime)
+	assert.Equal(t, expected.ConnMaxIdleTime, actual.ConnMaxIdleTime)
+	assert.Equal(t, expected.PoolTimeout, actual.PoolTimeout)
+}

command_test.go

@@ -4,7 +4,7 @@ import (
 	"errors"
 	"time"
 
-	redis "github.com/go-redis/redis/v8"
+	"github.com/go-redis/redis/v9"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
@@ -72,7 +72,7 @@ var _ = Describe("Cmd", func() {
 	})
 
 	It("supports time.Time", func() {
-		tm := time.Date(2019, 01, 01, 9, 45, 10, 222125, time.UTC)
+		tm := time.Date(2019, 1, 1, 9, 45, 10, 222125, time.UTC)
 
 		err := client.Set(ctx, "time_key", tm, 0).Err()
 		Expect(err).NotTo(HaveOccurred())

commands.go

@@ -6,14 +6,14 @@ import (
 	"io"
 	"time"
 
-	"github.com/go-redis/redis/v8/internal"
+	"github.com/go-redis/redis/v9/internal"
 )
 
 // KeepTTL is a Redis KEEPTTL option to keep existing TTL, it requires your redis-server version >= 6.0,
 // otherwise you will receive an error: (error) ERR syntax error.
 // For example:
 //
-//    rdb.Set(ctx, key, value, redis.KeepTTL)
+//	rdb.Set(ctx, key, value, redis.KeepTTL)
 const KeepTTL = -1
 
 func usePrecise(dur time.Duration) bool {
@@ -96,6 +96,10 @@ type Cmdable interface {
 	Exists(ctx context.Context, keys ...string) *IntCmd
 	Expire(ctx context.Context, key string, expiration time.Duration) *BoolCmd
 	ExpireAt(ctx context.Context, key string, tm time.Time) *BoolCmd
+	ExpireNX(ctx context.Context, key string, expiration time.Duration) *BoolCmd
+	ExpireXX(ctx context.Context, key string, expiration time.Duration) *BoolCmd
+	ExpireGT(ctx context.Context, key string, expiration time.Duration) *BoolCmd
+	ExpireLT(ctx context.Context, key string, expiration time.Duration) *BoolCmd
 	Keys(ctx context.Context, pattern string) *StringSliceCmd
 	Migrate(ctx context.Context, host, port, key string, db int, timeout time.Duration) *StatusCmd
 	Move(ctx context.Context, key string, db int) *BoolCmd
@@ -133,12 +137,12 @@ type Cmdable interface {
 	MSetNX(ctx context.Context, values ...interface{}) *BoolCmd
 	Set(ctx context.Context, key string, value interface{}, expiration time.Duration) *StatusCmd
 	SetArgs(ctx context.Context, key string, value interface{}, a SetArgs) *StatusCmd
-	// TODO: rename to SetEx
-	SetEX(ctx context.Context, key string, value interface{}, expiration time.Duration) *StatusCmd
+	SetEx(ctx context.Context, key string, value interface{}, expiration time.Duration) *StatusCmd
 	SetNX(ctx context.Context, key string, value interface{}, expiration time.Duration) *BoolCmd
 	SetXX(ctx context.Context, key string, value interface{}, expiration time.Duration) *BoolCmd
 	SetRange(ctx context.Context, key string, offset int64, value string) *IntCmd
 	StrLen(ctx context.Context, key string) *IntCmd
+	Copy(ctx context.Context, sourceKey string, destKey string, db int, replace bool) *IntCmd
 
 	GetBit(ctx context.Context, key string, offset int64) *IntCmd
 	SetBit(ctx context.Context, key string, offset int64, value int) *IntCmd
@@ -159,7 +163,7 @@ type Cmdable interface {
 	HDel(ctx context.Context, key string, fields ...string) *IntCmd
 	HExists(ctx context.Context, key, field string) *BoolCmd
 	HGet(ctx context.Context, key, field string) *StringCmd
-	HGetAll(ctx context.Context, key string) *StringStringMapCmd
+	HGetAll(ctx context.Context, key string) *MapStringStringCmd
 	HIncrBy(ctx context.Context, key, field string, incr int64) *IntCmd
 	HIncrByFloat(ctx context.Context, key, field string, incr float64) *FloatCmd
 	HKeys(ctx context.Context, key string) *StringSliceCmd
@@ -169,7 +173,8 @@ type Cmdable interface {
 	HMSet(ctx context.Context, key string, values ...interface{}) *BoolCmd
 	HSetNX(ctx context.Context, key, field string, value interface{}) *BoolCmd
 	HVals(ctx context.Context, key string) *StringSliceCmd
-	HRandField(ctx context.Context, key string, count int, withValues bool) *StringSliceCmd
+	HRandField(ctx context.Context, key string, count int) *StringSliceCmd
+	HRandFieldWithValues(ctx context.Context, key string, count int) *KeyValueSliceCmd
 
 	BLPop(ctx context.Context, timeout time.Duration, keys ...string) *StringSliceCmd
 	BRPop(ctx context.Context, timeout time.Duration, keys ...string) *StringSliceCmd
@@ -195,12 +200,14 @@ type Cmdable interface {
 	RPush(ctx context.Context, key string, values ...interface{}) *IntCmd
 	RPushX(ctx context.Context, key string, values ...interface{}) *IntCmd
 	LMove(ctx context.Context, source, destination, srcpos, destpos string) *StringCmd
+	BLMove(ctx context.Context, source, destination, srcpos, destpos string, timeout time.Duration) *StringCmd
 
 	SAdd(ctx context.Context, key string, members ...interface{}) *IntCmd
 	SCard(ctx context.Context, key string) *IntCmd
 	SDiff(ctx context.Context, keys ...string) *StringSliceCmd
 	SDiffStore(ctx context.Context, destination string, keys ...string) *IntCmd
 	SInter(ctx context.Context, keys ...string) *StringSliceCmd
+	SInterCard(ctx context.Context, limit int64, keys ...string) *IntCmd
 	SInterStore(ctx context.Context, destination string, keys ...string) *IntCmd
 	SIsMember(ctx context.Context, key string, member interface{}) *BoolCmd
 	SMIsMember(ctx context.Context, key string, members ...interface{}) *BoolSliceCmd
@@ -238,10 +245,6 @@ type Cmdable interface {
 	XClaimJustID(ctx context.Context, a *XClaimArgs) *StringSliceCmd
 	XAutoClaim(ctx context.Context, a *XAutoClaimArgs) *XAutoClaimCmd
 	XAutoClaimJustID(ctx context.Context, a *XAutoClaimArgs) *XAutoClaimJustIDCmd
-
-	// TODO: XTrim and XTrimApprox remove in v9.
-	XTrim(ctx context.Context, key string, maxLen int64) *IntCmd
-	XTrimApprox(ctx context.Context, key string, maxLen int64) *IntCmd
 	XTrimMaxLen(ctx context.Context, key string, maxLen int64) *IntCmd
 	XTrimMaxLenApprox(ctx context.Context, key string, maxLen, limit int64) *IntCmd
 	XTrimMinID(ctx context.Context, key string, minID string) *IntCmd
@@ -254,27 +257,11 @@ type Cmdable interface {
 	BZPopMax(ctx context.Context, timeout time.Duration, keys ...string) *ZWithKeyCmd
 	BZPopMin(ctx context.Context, timeout time.Duration, keys ...string) *ZWithKeyCmd
 
-	// TODO: remove
-	//		ZAddCh
-	//		ZIncr
-	//		ZAddNXCh
-	//		ZAddXXCh
-	//		ZIncrNX
-	//		ZIncrXX
-	// 	in v9.
-	// 	use ZAddArgs and ZAddArgsIncr.
-
-	ZAdd(ctx context.Context, key string, members ...*Z) *IntCmd
-	ZAddNX(ctx context.Context, key string, members ...*Z) *IntCmd
-	ZAddXX(ctx context.Context, key string, members ...*Z) *IntCmd
-	ZAddCh(ctx context.Context, key string, members ...*Z) *IntCmd
-	ZAddNXCh(ctx context.Context, key string, members ...*Z) *IntCmd
-	ZAddXXCh(ctx context.Context, key string, members ...*Z) *IntCmd
+	ZAdd(ctx context.Context, key string, members ...Z) *IntCmd
+	ZAddNX(ctx context.Context, key string, members ...Z) *IntCmd
+	ZAddXX(ctx context.Context, key string, members ...Z) *IntCmd
 	ZAddArgs(ctx context.Context, key string, args ZAddArgs) *IntCmd
 	ZAddArgsIncr(ctx context.Context, key string, args ZAddArgs) *FloatCmd
-	ZIncr(ctx context.Context, key string, member *Z) *FloatCmd
-	ZIncrNX(ctx context.Context, key string, member *Z) *FloatCmd
-	ZIncrXX(ctx context.Context, key string, member *Z) *FloatCmd
 	ZCard(ctx context.Context, key string) *IntCmd
 	ZCount(ctx context.Context, key, min, max string) *IntCmd
 	ZLexCount(ctx context.Context, key, min, max string) *IntCmd
@@ -306,9 +293,10 @@ type Cmdable interface {
 	ZRevRank(ctx context.Context, key, member string) *IntCmd
 	ZScore(ctx context.Context, key, member string) *FloatCmd
 	ZUnionStore(ctx context.Context, dest string, store *ZStore) *IntCmd
+	ZRandMember(ctx context.Context, key string, count int) *StringSliceCmd
+	ZRandMemberWithScores(ctx context.Context, key string, count int) *ZSliceCmd
 	ZUnion(ctx context.Context, store ZStore) *StringSliceCmd
 	ZUnionWithScores(ctx context.Context, store ZStore) *ZSliceCmd
-	ZRandMember(ctx context.Context, key string, count int, withScores bool) *StringSliceCmd
 	ZDiff(ctx context.Context, keys ...string) *StringSliceCmd
 	ZDiffWithScores(ctx context.Context, keys ...string) *ZSliceCmd
 	ZDiffStore(ctx context.Context, destination string, keys ...string) *IntCmd
@@ -323,8 +311,11 @@ type Cmdable interface {
 	ClientKillByFilter(ctx context.Context, keys ...string) *IntCmd
 	ClientList(ctx context.Context) *StringCmd
 	ClientPause(ctx context.Context, dur time.Duration) *BoolCmd
+	ClientUnpause(ctx context.Context) *BoolCmd
 	ClientID(ctx context.Context) *IntCmd
-	ConfigGet(ctx context.Context, parameter string) *SliceCmd
+	ClientUnblock(ctx context.Context, id int64) *IntCmd
+	ClientUnblockWithError(ctx context.Context, id int64) *IntCmd
+	ConfigGet(ctx context.Context, parameter string) *MapStringStringCmd
 	ConfigResetStat(ctx context.Context) *StatusCmd
 	ConfigSet(ctx context.Context, parameter, value string) *StatusCmd
 	ConfigRewrite(ctx context.Context) *StatusCmd
@@ -340,6 +331,7 @@ type Cmdable interface {
 	ShutdownSave(ctx context.Context) *StatusCmd
 	ShutdownNoSave(ctx context.Context) *StatusCmd
 	SlaveOf(ctx context.Context, host, port string) *StatusCmd
+	SlowLogGet(ctx context.Context, num int64) *SlowLogCmd
 	Time(ctx context.Context) *TimeCmd
 	DebugObject(ctx context.Context, key string) *StringCmd
 	ReadOnly(ctx context.Context) *StatusCmd
@@ -348,15 +340,20 @@ type Cmdable interface {
 
 	Eval(ctx context.Context, script string, keys []string, args ...interface{}) *Cmd
 	EvalSha(ctx context.Context, sha1 string, keys []string, args ...interface{}) *Cmd
+	EvalRO(ctx context.Context, script string, keys []string, args ...interface{}) *Cmd
+	EvalShaRO(ctx context.Context, sha1 string, keys []string, args ...interface{}) *Cmd
 	ScriptExists(ctx context.Context, hashes ...string) *BoolSliceCmd
 	ScriptFlush(ctx context.Context) *StatusCmd
 	ScriptKill(ctx context.Context) *StatusCmd
 	ScriptLoad(ctx context.Context, script string) *StringCmd
 
 	Publish(ctx context.Context, channel string, message interface{}) *IntCmd
+	SPublish(ctx context.Context, channel string, message interface{}) *IntCmd
 	PubSubChannels(ctx context.Context, pattern string) *StringSliceCmd
-	PubSubNumSub(ctx context.Context, channels ...string) *StringIntMapCmd
+	PubSubNumSub(ctx context.Context, channels ...string) *MapStringIntCmd
 	PubSubNumPat(ctx context.Context) *IntCmd
+	PubSubShardChannels(ctx context.Context, pattern string) *StringSliceCmd
+	PubSubShardNumSub(ctx context.Context, channels ...string) *MapStringIntCmd
 
 	ClusterSlots(ctx context.Context) *ClusterSlotsCmd
 	ClusterNodes(ctx context.Context) *StringCmd
@@ -398,6 +395,7 @@ type StatefulCmdable interface {
 	Select(ctx context.Context, index int) *StatusCmd
 	SwapDB(ctx context.Context, index1, index2 int) *StatusCmd
 	ClientSetName(ctx context.Context, name string) *BoolCmd
+	Hello(ctx context.Context, ver int, username, password, clientName string) *MapStringInterfaceCmd
 }
 
 var (
@@ -430,6 +428,7 @@ func (c statefulCmdable) AuthACL(ctx context.Context, username, password string)
 
 func (c cmdable) Wait(ctx context.Context, numSlaves int, timeout time.Duration) *IntCmd {
 	cmd := NewIntCmd(ctx, "wait", numSlaves, int(timeout/time.Millisecond))
+	cmd.setReadTimeout(timeout)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -453,6 +452,26 @@ func (c statefulCmdable) ClientSetName(ctx context.Context, name string) *BoolCm
 	return cmd
 }
 
+// Hello Set the resp protocol used.
+func (c statefulCmdable) Hello(ctx context.Context,
+	ver int, username, password, clientName string) *MapStringInterfaceCmd {
+	args := make([]interface{}, 0, 7)
+	args = append(args, "hello", ver)
+	if password != "" {
+		if username != "" {
+			args = append(args, "auth", username, password)
+		} else {
+			args = append(args, "auth", "default", password)
+		}
+	}
+	if clientName != "" {
+		args = append(args, "setname", clientName)
+	}
+	cmd := NewMapStringInterfaceCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
 //------------------------------------------------------------------------------
 
 func (c cmdable) Command(ctx context.Context) *CommandsInfoCmd {
@@ -524,7 +543,37 @@ func (c cmdable) Exists(ctx context.Context, keys ...string) *IntCmd {
 }
 
 func (c cmdable) Expire(ctx context.Context, key string, expiration time.Duration) *BoolCmd {
-	cmd := NewBoolCmd(ctx, "expire", key, formatSec(ctx, expiration))
+	return c.expire(ctx, key, expiration, "")
+}
+
+func (c cmdable) ExpireNX(ctx context.Context, key string, expiration time.Duration) *BoolCmd {
+	return c.expire(ctx, key, expiration, "NX")
+}
+
+func (c cmdable) ExpireXX(ctx context.Context, key string, expiration time.Duration) *BoolCmd {
+	return c.expire(ctx, key, expiration, "XX")
+}
+
+func (c cmdable) ExpireGT(ctx context.Context, key string, expiration time.Duration) *BoolCmd {
+	return c.expire(ctx, key, expiration, "GT")
+}
+
+func (c cmdable) ExpireLT(ctx context.Context, key string, expiration time.Duration) *BoolCmd {
+	return c.expire(ctx, key, expiration, "LT")
+}
+
+func (c cmdable) expire(
+	ctx context.Context, key string, expiration time.Duration, mode string,
+) *BoolCmd {
+	args := make([]interface{}, 3, 4)
+	args[0] = "expire"
+	args[1] = key
+	args[2] = formatSec(ctx, expiration)
+	if mode != "" {
+		args = append(args, mode)
+	}
+
+	cmd := NewBoolCmd(ctx, args...)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -845,7 +894,7 @@ func (c cmdable) MSetNX(ctx context.Context, values ...interface{}) *BoolCmd {
 }
 
 // Set Redis `SET key value [expiration]` command.
-// Use expiration for `SETEX`-like behavior.
+// Use expiration for `SETEx`-like behavior.
 //
 // Zero expiration means the key has no expiration time.
 // KeepTTL is a Redis KEEPTTL option to keep existing TTL, it requires your redis-server version >= 6.0,
@@ -921,8 +970,8 @@ func (c cmdable) SetArgs(ctx context.Context, key string, value interface{}, a S
 	return cmd
 }
 
-// SetEX Redis `SETEX key expiration value` command.
-func (c cmdable) SetEX(ctx context.Context, key string, value interface{}, expiration time.Duration) *StatusCmd {
+// SetEx Redis `SETEx key expiration value` command.
+func (c cmdable) SetEx(ctx context.Context, key string, value interface{}, expiration time.Duration) *StatusCmd {
 	cmd := NewStatusCmd(ctx, "setex", key, formatSec(ctx, expiration), value)
 	_ = c(ctx, cmd)
 	return cmd
@@ -989,6 +1038,16 @@ func (c cmdable) StrLen(ctx context.Context, key string) *IntCmd {
 	return cmd
 }
 
+func (c cmdable) Copy(ctx context.Context, sourceKey, destKey string, db int, replace bool) *IntCmd {
+	args := []interface{}{"copy", sourceKey, destKey, "DB", db}
+	if replace {
+		args = append(args, "REPLACE")
+	}
+	cmd := NewIntCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
 //------------------------------------------------------------------------------
 
 func (c cmdable) GetBit(ctx context.Context, key string, offset int64) *IntCmd {
@@ -1182,8 +1241,8 @@ func (c cmdable) HGet(ctx context.Context, key, field string) *StringCmd {
 	return cmd
 }
 
-func (c cmdable) HGetAll(ctx context.Context, key string) *StringStringMapCmd {
-	cmd := NewStringStringMapCmd(ctx, "hgetall", key)
+func (c cmdable) HGetAll(ctx context.Context, key string) *MapStringStringCmd {
+	cmd := NewMapStringStringCmd(ctx, "hgetall", key)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -1266,16 +1325,15 @@ func (c cmdable) HVals(ctx context.Context, key string) *StringSliceCmd {
 }
 
 // HRandField redis-server version >= 6.2.0.
-func (c cmdable) HRandField(ctx context.Context, key string, count int, withValues bool) *StringSliceCmd {
-	args := make([]interface{}, 0, 4)
+func (c cmdable) HRandField(ctx context.Context, key string, count int) *StringSliceCmd {
+	cmd := NewStringSliceCmd(ctx, "hrandfield", key, count)
+	_ = c(ctx, cmd)
+	return cmd
+}
 
-	// Although count=0 is meaningless, redis accepts count=0.
-	args = append(args, "hrandfield", key, count)
-	if withValues {
-		args = append(args, "withvalues")
-	}
-
-	cmd := NewStringSliceCmd(ctx, args...)
+// HRandFieldWithValues redis-server version >= 6.2.0.
+func (c cmdable) HRandFieldWithValues(ctx context.Context, key string, count int) *KeyValueSliceCmd {
+	cmd := NewKeyValueSliceCmd(ctx, "hrandfield", key, count, "withvalues")
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -1494,6 +1552,15 @@ func (c cmdable) LMove(ctx context.Context, source, destination, srcpos, destpos
 	return cmd
 }
 
+func (c cmdable) BLMove(
+	ctx context.Context, source, destination, srcpos, destpos string, timeout time.Duration,
+) *StringCmd {
+	cmd := NewStringCmd(ctx, "blmove", source, destination, srcpos, destpos, formatSec(ctx, timeout))
+	cmd.setReadTimeout(timeout)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
 //------------------------------------------------------------------------------
 
 func (c cmdable) SAdd(ctx context.Context, key string, members ...interface{}) *IntCmd {
@@ -1546,6 +1613,22 @@ func (c cmdable) SInter(ctx context.Context, keys ...string) *StringSliceCmd {
 	return cmd
 }
 
+func (c cmdable) SInterCard(ctx context.Context, limit int64, keys ...string) *IntCmd {
+	args := make([]interface{}, 4+len(keys))
+	args[0] = "sintercard"
+	numkeys := int64(0)
+	for i, key := range keys {
+		args[2+i] = key
+		numkeys++
+	}
+	args[1] = numkeys
+	args[2+numkeys] = "limit"
+	args[3+numkeys] = limit
+	cmd := NewIntCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
 func (c cmdable) SInterStore(ctx context.Context, destination string, keys ...string) *IntCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "sinterstore"
@@ -1669,11 +1752,7 @@ type XAddArgs struct {
 	Stream     string
 	NoMkStream bool
 	MaxLen     int64 // MAXLEN N
-
-	// Deprecated: use MaxLen+Approx, remove in v9.
-	MaxLenApprox int64 // MAXLEN ~ N
-
-	MinID string
+	MinID      string
 	// Approx causes MaxLen and MinID to use "~" matcher (instead of "=").
 	Approx bool
 	Limit  int64
@@ -1681,8 +1760,6 @@ type XAddArgs struct {
 	Values interface{}
 }
 
-// XAdd a.Limit has a bug, please confirm it and use it.
-// issue: https://github.com/redis/redis/issues/9046
 func (c cmdable) XAdd(ctx context.Context, a *XAddArgs) *StringCmd {
 	args := make([]interface{}, 0, 11)
 	args = append(args, "xadd", a.Stream)
@@ -1696,9 +1773,6 @@ func (c cmdable) XAdd(ctx context.Context, a *XAddArgs) *StringCmd {
 		} else {
 			args = append(args, "maxlen", a.MaxLen)
 		}
-	case a.MaxLenApprox > 0:
-		// TODO remove in v9.
-		args = append(args, "maxlen", "~", a.MaxLenApprox)
 	case a.MinID != "":
 		if a.Approx {
 			args = append(args, "minid", "~", a.MinID)
@@ -1768,7 +1842,7 @@ type XReadArgs struct {
 }
 
 func (c cmdable) XRead(ctx context.Context, a *XReadArgs) *XStreamSliceCmd {
-	args := make([]interface{}, 0, 5+len(a.Streams))
+	args := make([]interface{}, 0, 6+len(a.Streams))
 	args = append(args, "xread")
 
 	keyPos := int8(1)
@@ -1792,7 +1866,7 @@ func (c cmdable) XRead(ctx context.Context, a *XReadArgs) *XStreamSliceCmd {
 	if a.Block >= 0 {
 		cmd.setReadTimeout(a.Block)
 	}
-	cmd.setFirstKeyPos(keyPos)
+	cmd.SetFirstKeyPos(keyPos)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -1850,7 +1924,7 @@ type XReadGroupArgs struct {
 }
 
 func (c cmdable) XReadGroup(ctx context.Context, a *XReadGroupArgs) *XStreamSliceCmd {
-	args := make([]interface{}, 0, 8+len(a.Streams))
+	args := make([]interface{}, 0, 10+len(a.Streams))
 	args = append(args, "xreadgroup", "group", a.Group, a.Consumer)
 
 	keyPos := int8(4)
@@ -1876,7 +1950,7 @@ func (c cmdable) XReadGroup(ctx context.Context, a *XReadGroupArgs) *XStreamSlic
 	if a.Block >= 0 {
 		cmd.setReadTimeout(a.Block)
 	}
-	cmd.setFirstKeyPos(keyPos)
+	cmd.SetFirstKeyPos(keyPos)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -1947,7 +2021,7 @@ func (c cmdable) XAutoClaimJustID(ctx context.Context, a *XAutoClaimArgs) *XAuto
 }
 
 func xAutoClaimArgs(ctx context.Context, a *XAutoClaimArgs) []interface{} {
-	args := make([]interface{}, 0, 9)
+	args := make([]interface{}, 0, 8)
 	args = append(args, "xautoclaim", a.Stream, a.Group, a.Consumer, formatMs(ctx, a.MinIdle), a.Start)
 	if a.Count > 0 {
 		args = append(args, "count", a.Count)
@@ -1979,7 +2053,7 @@ func (c cmdable) XClaimJustID(ctx context.Context, a *XClaimArgs) *StringSliceCm
 }
 
 func xClaimArgs(a *XClaimArgs) []interface{} {
-	args := make([]interface{}, 0, 4+len(a.Messages))
+	args := make([]interface{}, 0, 5+len(a.Messages))
 	args = append(args,
 		"xclaim",
 		a.Stream,
@@ -1993,8 +2067,10 @@ func xClaimArgs(a *XClaimArgs) []interface{} {
 
 // xTrim If approx is true, add the "~" parameter, otherwise it is the default "=" (redis default).
 // example:
-//		XTRIM key MAXLEN/MINID threshold LIMIT limit.
-//		XTRIM key MAXLEN/MINID ~ threshold LIMIT limit.
+//
+//	XTRIM key MAXLEN/MINID threshold LIMIT limit.
+//	XTRIM key MAXLEN/MINID ~ threshold LIMIT limit.
+//
 // The redis-server version is lower than 6.2, please set limit to 0.
 func (c cmdable) xTrim(
 	ctx context.Context, key, strategy string,
@@ -2014,38 +2090,20 @@ func (c cmdable) xTrim(
 	return cmd
 }
 
-// Deprecated: use XTrimMaxLen, remove in v9.
-func (c cmdable) XTrim(ctx context.Context, key string, maxLen int64) *IntCmd {
-	return c.xTrim(ctx, key, "maxlen", false, maxLen, 0)
-}
-
-// Deprecated: use XTrimMaxLenApprox, remove in v9.
-func (c cmdable) XTrimApprox(ctx context.Context, key string, maxLen int64) *IntCmd {
-	return c.xTrim(ctx, key, "maxlen", true, maxLen, 0)
-}
-
 // XTrimMaxLen No `~` rules are used, `limit` cannot be used.
 // cmd: XTRIM key MAXLEN maxLen
 func (c cmdable) XTrimMaxLen(ctx context.Context, key string, maxLen int64) *IntCmd {
 	return c.xTrim(ctx, key, "maxlen", false, maxLen, 0)
 }
 
-// XTrimMaxLenApprox LIMIT has a bug, please confirm it and use it.
-// issue: https://github.com/redis/redis/issues/9046
-// cmd: XTRIM key MAXLEN ~ maxLen LIMIT limit
 func (c cmdable) XTrimMaxLenApprox(ctx context.Context, key string, maxLen, limit int64) *IntCmd {
 	return c.xTrim(ctx, key, "maxlen", true, maxLen, limit)
 }
 
-// XTrimMinID No `~` rules are used, `limit` cannot be used.
-// cmd: XTRIM key MINID minID
 func (c cmdable) XTrimMinID(ctx context.Context, key string, minID string) *IntCmd {
 	return c.xTrim(ctx, key, "minid", false, minID, 0)
 }
 
-// XTrimMinIDApprox LIMIT has a bug, please confirm it and use it.
-// issue: https://github.com/redis/redis/issues/9046
-// cmd: XTRIM key MINID ~ minID LIMIT limit
 func (c cmdable) XTrimMinIDApprox(ctx context.Context, key string, minID string, limit int64) *IntCmd {
 	return c.xTrim(ctx, key, "minid", true, minID, limit)
 }
@@ -2210,116 +2268,26 @@ func (c cmdable) ZAddArgsIncr(ctx context.Context, key string, args ZAddArgs) *F
 	return cmd
 }
 
-// TODO: Compatible with v8 api, will be removed in v9.
-func (c cmdable) zAdd(ctx context.Context, key string, args ZAddArgs, members ...*Z) *IntCmd {
-	args.Members = make([]Z, len(members))
-	for i, m := range members {
-		args.Members[i] = *m
-	}
-	cmd := NewIntCmd(ctx, c.zAddArgs(key, args, false)...)
-	_ = c(ctx, cmd)
-	return cmd
-}
-
 // ZAdd Redis `ZADD key score member [score member ...]` command.
-func (c cmdable) ZAdd(ctx context.Context, key string, members ...*Z) *IntCmd {
-	return c.zAdd(ctx, key, ZAddArgs{}, members...)
+func (c cmdable) ZAdd(ctx context.Context, key string, members ...Z) *IntCmd {
+	return c.ZAddArgs(ctx, key, ZAddArgs{
+		Members: members,
+	})
 }
 
 // ZAddNX Redis `ZADD key NX score member [score member ...]` command.
-func (c cmdable) ZAddNX(ctx context.Context, key string, members ...*Z) *IntCmd {
-	return c.zAdd(ctx, key, ZAddArgs{
-		NX: true,
-	}, members...)
+func (c cmdable) ZAddNX(ctx context.Context, key string, members ...Z) *IntCmd {
+	return c.ZAddArgs(ctx, key, ZAddArgs{
+		NX:      true,
+		Members: members,
+	})
 }
 
 // ZAddXX Redis `ZADD key XX score member [score member ...]` command.
-func (c cmdable) ZAddXX(ctx context.Context, key string, members ...*Z) *IntCmd {
-	return c.zAdd(ctx, key, ZAddArgs{
-		XX: true,
-	}, members...)
-}
-
-// ZAddCh Redis `ZADD key CH score member [score member ...]` command.
-// Deprecated: Use
-//		client.ZAddArgs(ctx, ZAddArgs{
-//			Ch: true,
-//			Members: []Z,
-//		})
-//	remove in v9.
-func (c cmdable) ZAddCh(ctx context.Context, key string, members ...*Z) *IntCmd {
-	return c.zAdd(ctx, key, ZAddArgs{
-		Ch: true,
-	}, members...)
-}
-
-// ZAddNXCh Redis `ZADD key NX CH score member [score member ...]` command.
-// Deprecated: Use
-//		client.ZAddArgs(ctx, ZAddArgs{
-//			NX: true,
-//			Ch: true,
-//			Members: []Z,
-//		})
-//	remove in v9.
-func (c cmdable) ZAddNXCh(ctx context.Context, key string, members ...*Z) *IntCmd {
-	return c.zAdd(ctx, key, ZAddArgs{
-		NX: true,
-		Ch: true,
-	}, members...)
-}
-
-// ZAddXXCh Redis `ZADD key XX CH score member [score member ...]` command.
-// Deprecated: Use
-//		client.ZAddArgs(ctx, ZAddArgs{
-//			XX: true,
-//			Ch: true,
-//			Members: []Z,
-//		})
-//	remove in v9.
-func (c cmdable) ZAddXXCh(ctx context.Context, key string, members ...*Z) *IntCmd {
-	return c.zAdd(ctx, key, ZAddArgs{
-		XX: true,
-		Ch: true,
-	}, members...)
-}
-
-// ZIncr Redis `ZADD key INCR score member` command.
-// Deprecated: Use
-//		client.ZAddArgsIncr(ctx, ZAddArgs{
-//			Members: []Z,
-//		})
-//	remove in v9.
-func (c cmdable) ZIncr(ctx context.Context, key string, member *Z) *FloatCmd {
-	return c.ZAddArgsIncr(ctx, key, ZAddArgs{
-		Members: []Z{*member},
-	})
-}
-
-// ZIncrNX Redis `ZADD key NX INCR score member` command.
-// Deprecated: Use
-//		client.ZAddArgsIncr(ctx, ZAddArgs{
-//			NX: true,
-//			Members: []Z,
-//		})
-//	remove in v9.
-func (c cmdable) ZIncrNX(ctx context.Context, key string, member *Z) *FloatCmd {
-	return c.ZAddArgsIncr(ctx, key, ZAddArgs{
-		NX:      true,
-		Members: []Z{*member},
-	})
-}
-
-// ZIncrXX Redis `ZADD key XX INCR score member` command.
-// Deprecated: Use
-//		client.ZAddArgsIncr(ctx, ZAddArgs{
-//			XX: true,
-//			Members: []Z,
-//		})
-//	remove in v9.
-func (c cmdable) ZIncrXX(ctx context.Context, key string, member *Z) *FloatCmd {
-	return c.ZAddArgsIncr(ctx, key, ZAddArgs{
+func (c cmdable) ZAddXX(ctx context.Context, key string, members ...Z) *IntCmd {
+	return c.ZAddArgs(ctx, key, ZAddArgs{
 		XX:      true,
-		Members: []Z{*member},
+		Members: members,
 	})
 }
 
@@ -2352,7 +2320,7 @@ func (c cmdable) ZInterStore(ctx context.Context, destination string, store *ZSt
 	args = append(args, "zinterstore", destination, len(store.Keys))
 	args = store.appendArgs(args)
 	cmd := NewIntCmd(ctx, args...)
-	cmd.setFirstKeyPos(3)
+	cmd.SetFirstKeyPos(3)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2362,7 +2330,7 @@ func (c cmdable) ZInter(ctx context.Context, store *ZStore) *StringSliceCmd {
 	args = append(args, "zinter", len(store.Keys))
 	args = store.appendArgs(args)
 	cmd := NewStringSliceCmd(ctx, args...)
-	cmd.setFirstKeyPos(2)
+	cmd.SetFirstKeyPos(2)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2373,7 +2341,7 @@ func (c cmdable) ZInterWithScores(ctx context.Context, store *ZStore) *ZSliceCmd
 	args = store.appendArgs(args)
 	args = append(args, "withscores")
 	cmd := NewZSliceCmd(ctx, args...)
-	cmd.setFirstKeyPos(2)
+	cmd.SetFirstKeyPos(2)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2432,11 +2400,13 @@ func (c cmdable) ZPopMin(ctx context.Context, key string, count ...int64) *ZSlic
 
 // ZRangeArgs is all the options of the ZRange command.
 // In version> 6.2.0, you can replace the(cmd):
-//		ZREVRANGE,
-//		ZRANGEBYSCORE,
-//		ZREVRANGEBYSCORE,
-//		ZRANGEBYLEX,
-//		ZREVRANGEBYLEX.
+//
+//	ZREVRANGE,
+//	ZRANGEBYSCORE,
+//	ZREVRANGEBYSCORE,
+//	ZRANGEBYLEX,
+//	ZREVRANGEBYLEX.
+//
 // Please pay attention to your redis-server version.
 //
 // Rev, ByScore, ByLex and Offset+Count options require redis-server 6.2.0 and higher.
@@ -2700,7 +2670,7 @@ func (c cmdable) ZUnion(ctx context.Context, store ZStore) *StringSliceCmd {
 	args = append(args, "zunion", len(store.Keys))
 	args = store.appendArgs(args)
 	cmd := NewStringSliceCmd(ctx, args...)
-	cmd.setFirstKeyPos(2)
+	cmd.SetFirstKeyPos(2)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2711,7 +2681,7 @@ func (c cmdable) ZUnionWithScores(ctx context.Context, store ZStore) *ZSliceCmd
 	args = store.appendArgs(args)
 	args = append(args, "withscores")
 	cmd := NewZSliceCmd(ctx, args...)
-	cmd.setFirstKeyPos(2)
+	cmd.SetFirstKeyPos(2)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2721,22 +2691,21 @@ func (c cmdable) ZUnionStore(ctx context.Context, dest string, store *ZStore) *I
 	args = append(args, "zunionstore", dest, len(store.Keys))
 	args = store.appendArgs(args)
 	cmd := NewIntCmd(ctx, args...)
-	cmd.setFirstKeyPos(3)
+	cmd.SetFirstKeyPos(3)
 	_ = c(ctx, cmd)
 	return cmd
 }
 
 // ZRandMember redis-server version >= 6.2.0.
-func (c cmdable) ZRandMember(ctx context.Context, key string, count int, withScores bool) *StringSliceCmd {
-	args := make([]interface{}, 0, 4)
+func (c cmdable) ZRandMember(ctx context.Context, key string, count int) *StringSliceCmd {
+	cmd := NewStringSliceCmd(ctx, "zrandmember", key, count)
+	_ = c(ctx, cmd)
+	return cmd
+}
 
-	// Although count=0 is meaningless, redis accepts count=0.
-	args = append(args, "zrandmember", key, count)
-	if withScores {
-		args = append(args, "withscores")
-	}
-
-	cmd := NewStringSliceCmd(ctx, args...)
+// ZRandMemberWithScores redis-server version >= 6.2.0.
+func (c cmdable) ZRandMemberWithScores(ctx context.Context, key string, count int) *ZSliceCmd {
+	cmd := NewZSliceCmd(ctx, "zrandmember", key, count, "withscores")
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2751,7 +2720,7 @@ func (c cmdable) ZDiff(ctx context.Context, keys ...string) *StringSliceCmd {
 	}
 
 	cmd := NewStringSliceCmd(ctx, args...)
-	cmd.setFirstKeyPos(2)
+	cmd.SetFirstKeyPos(2)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2767,7 +2736,7 @@ func (c cmdable) ZDiffWithScores(ctx context.Context, keys ...string) *ZSliceCmd
 	args[len(keys)+2] = "withscores"
 
 	cmd := NewZSliceCmd(ctx, args...)
-	cmd.setFirstKeyPos(2)
+	cmd.SetFirstKeyPos(2)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2841,7 +2810,7 @@ func (c cmdable) ClientKill(ctx context.Context, ipPort string) *StatusCmd {
 
 // ClientKillByFilter is new style syntax, while the ClientKill is old
 //
-//   CLIENT KILL <option> [value] ... <option> [value]
+//	CLIENT KILL <option> [value] ... <option> [value]
 func (c cmdable) ClientKillByFilter(ctx context.Context, keys ...string) *IntCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "client"
@@ -2866,6 +2835,12 @@ func (c cmdable) ClientPause(ctx context.Context, dur time.Duration) *BoolCmd {
 	return cmd
 }
 
+func (c cmdable) ClientUnpause(ctx context.Context) *BoolCmd {
+	cmd := NewBoolCmd(ctx, "client", "unpause")
+	_ = c(ctx, cmd)
+	return cmd
+}
+
 func (c cmdable) ClientID(ctx context.Context) *IntCmd {
 	cmd := NewIntCmd(ctx, "client", "id")
 	_ = c(ctx, cmd)
@@ -2884,8 +2859,8 @@ func (c cmdable) ClientUnblockWithError(ctx context.Context, id int64) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) ConfigGet(ctx context.Context, parameter string) *SliceCmd {
-	cmd := NewSliceCmd(ctx, "config", "get", parameter)
+func (c cmdable) ConfigGet(ctx context.Context, parameter string) *MapStringStringCmd {
+	cmd := NewMapStringStringCmd(ctx, "config", "get", parameter)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -2938,10 +2913,11 @@ func (c cmdable) FlushDBAsync(ctx context.Context) *StatusCmd {
 	return cmd
 }
 
-func (c cmdable) Info(ctx context.Context, section ...string) *StringCmd {
-	args := []interface{}{"info"}
-	if len(section) > 0 {
-		args = append(args, section[0])
+func (c cmdable) Info(ctx context.Context, sections ...string) *StringCmd {
+	args := make([]interface{}, 1+len(sections))
+	args[0] = "info"
+	for i, section := range sections {
+		args[i+1] = section
 	}
 	cmd := NewStringCmd(ctx, args...)
 	_ = c(ctx, cmd)
@@ -3043,7 +3019,7 @@ func (c cmdable) MemoryUsage(ctx context.Context, key string, samples ...int) *I
 		args = append(args, "SAMPLES", samples[0])
 	}
 	cmd := NewIntCmd(ctx, args...)
-	cmd.setFirstKeyPos(2)
+	cmd.SetFirstKeyPos(2)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -3051,31 +3027,32 @@ func (c cmdable) MemoryUsage(ctx context.Context, key string, samples ...int) *I
 //------------------------------------------------------------------------------
 
 func (c cmdable) Eval(ctx context.Context, script string, keys []string, args ...interface{}) *Cmd {
-	cmdArgs := make([]interface{}, 3+len(keys), 3+len(keys)+len(args))
-	cmdArgs[0] = "eval"
-	cmdArgs[1] = script
-	cmdArgs[2] = len(keys)
-	for i, key := range keys {
-		cmdArgs[3+i] = key
-	}
-	cmdArgs = appendArgs(cmdArgs, args)
-	cmd := NewCmd(ctx, cmdArgs...)
-	cmd.setFirstKeyPos(3)
-	_ = c(ctx, cmd)
-	return cmd
+	return c.eval(ctx, "eval", script, keys, args...)
+}
+
+func (c cmdable) EvalRO(ctx context.Context, script string, keys []string, args ...interface{}) *Cmd {
+	return c.eval(ctx, "eval_ro", script, keys, args...)
 }
 
 func (c cmdable) EvalSha(ctx context.Context, sha1 string, keys []string, args ...interface{}) *Cmd {
+	return c.eval(ctx, "evalsha", sha1, keys, args...)
+}
+
+func (c cmdable) EvalShaRO(ctx context.Context, sha1 string, keys []string, args ...interface{}) *Cmd {
+	return c.eval(ctx, "evalsha_ro", sha1, keys, args...)
+}
+
+func (c cmdable) eval(ctx context.Context, name, payload string, keys []string, args ...interface{}) *Cmd {
 	cmdArgs := make([]interface{}, 3+len(keys), 3+len(keys)+len(args))
-	cmdArgs[0] = "evalsha"
-	cmdArgs[1] = sha1
+	cmdArgs[0] = name
+	cmdArgs[1] = payload
 	cmdArgs[2] = len(keys)
 	for i, key := range keys {
 		cmdArgs[3+i] = key
 	}
 	cmdArgs = appendArgs(cmdArgs, args)
 	cmd := NewCmd(ctx, cmdArgs...)
-	cmd.setFirstKeyPos(3)
+	cmd.SetFirstKeyPos(3)
 	_ = c(ctx, cmd)
 	return cmd
 }
@@ -3119,6 +3096,12 @@ func (c cmdable) Publish(ctx context.Context, channel string, message interface{
 	return cmd
 }
 
+func (c cmdable) SPublish(ctx context.Context, channel string, message interface{}) *IntCmd {
+	cmd := NewIntCmd(ctx, "spublish", channel, message)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
 func (c cmdable) PubSubChannels(ctx context.Context, pattern string) *StringSliceCmd {
 	args := []interface{}{"pubsub", "channels"}
 	if pattern != "*" {
@@ -3129,14 +3112,36 @@ func (c cmdable) PubSubChannels(ctx context.Context, pattern string) *StringSlic
 	return cmd
 }
 
-func (c cmdable) PubSubNumSub(ctx context.Context, channels ...string) *StringIntMapCmd {
+func (c cmdable) PubSubNumSub(ctx context.Context, channels ...string) *MapStringIntCmd {
 	args := make([]interface{}, 2+len(channels))
 	args[0] = "pubsub"
 	args[1] = "numsub"
 	for i, channel := range channels {
 		args[2+i] = channel
 	}
-	cmd := NewStringIntMapCmd(ctx, args...)
+	cmd := NewMapStringIntCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+func (c cmdable) PubSubShardChannels(ctx context.Context, pattern string) *StringSliceCmd {
+	args := []interface{}{"pubsub", "shardchannels"}
+	if pattern != "*" {
+		args = append(args, pattern)
+	}
+	cmd := NewStringSliceCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+func (c cmdable) PubSubShardNumSub(ctx context.Context, channels ...string) *MapStringIntCmd {
+	args := make([]interface{}, 2+len(channels))
+	args[0] = "pubsub"
+	args[1] = "shardnumsub"
+	for i, channel := range channels {
+		args[2+i] = channel
+	}
+	cmd := NewMapStringIntCmd(ctx, args...)
 	_ = c(ctx, cmd)
 	return cmd
 }

error.go

@@ -6,13 +6,24 @@ import (
 	"net"
 	"strings"
 
-	"github.com/go-redis/redis/v8/internal/pool"
-	"github.com/go-redis/redis/v8/internal/proto"
+	"github.com/go-redis/redis/v9/internal/pool"
+	"github.com/go-redis/redis/v9/internal/proto"
 )
 
 // ErrClosed performs any operation on the closed client will return this error.
 var ErrClosed = pool.ErrClosed
 
+// HasErrorPrefix checks if the err is a Redis error and the message contains a prefix.
+func HasErrorPrefix(err error, prefix string) bool {
+	err, ok := err.(Error)
+	if !ok {
+		return false
+	}
+	msg := err.Error()
+	msg = strings.TrimPrefix(msg, "ERR ") // KVRocks adds such prefix
+	return strings.HasPrefix(msg, prefix)
+}
+
 type Error interface {
 	error
 
@@ -65,7 +76,7 @@ func isRedisError(err error) bool {
 	return ok
 }
 
-func isBadConn(err error, allowTimeout bool) bool {
+func isBadConn(err error, allowTimeout bool, addr string) bool {
 	switch err {
 	case nil:
 		return false
@@ -74,14 +85,24 @@ func isBadConn(err error, allowTimeout bool) bool {
 	}
 
 	if isRedisError(err) {
-		// Close connections in read only state in case domain addr is used
-		// and domain resolves to a different Redis Server. See #790.
-		return isReadOnlyError(err)
+		switch {
+		case isReadOnlyError(err):
+			// Close connections in read only state in case domain addr is used
+			// and domain resolves to a different Redis Server. See #790.
+			return true
+		case isMovedSameConnAddr(err, addr):
+			// Close connections when we are asked to move to the same addr
+			// of the connection. Force a DNS resolution when all connections
+			// of the pool are recycled
+			return true
+		default:
+			return false
+		}
 	}
 
 	if allowTimeout {
 		if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
-			return !netErr.Temporary()
+			return false
 		}
 	}
 
@@ -119,6 +140,14 @@ func isReadOnlyError(err error) bool {
 	return strings.HasPrefix(err.Error(), "READONLY ")
 }
 
+func isMovedSameConnAddr(err error, addr string) bool {
+	redisError := err.Error()
+	if !strings.HasPrefix(redisError, "MOVED ") {
+		return false
+	}
+	return strings.HasSuffix(redisError, " "+addr)
+}
+
 //------------------------------------------------------------------------------
 
 type timeoutError interface {

example/del-keys-without-ttl/README.md

@@ -0,0 +1,11 @@
+# Delete keys without a ttl
+
+This example demonstrates how to use `SCAN` and pipelines to efficiently delete keys without a TTL.
+
+To run this example:
+
+```shell
+go run .
+```
+
+See [documentation](https://redis.uptrace.dev/guide/get-all-keys.html) for more details.

example/del-keys-without-ttl/go.mod

@@ -0,0 +1,10 @@
+module github.com/go-redis/redis/example/del-keys-without-ttl
+
+go 1.14
+
+replace github.com/go-redis/redis/v9 => ../..
+
+require (
+	github.com/go-redis/redis/v9 v9.0.0-rc.2
+	go.uber.org/zap v1.24.0
+)

example/del-keys-without-ttl/go.sum

@@ -0,0 +1,198 @@
+github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
+github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
+github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
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+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
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example/del-keys-without-ttl/main.go

@@ -0,0 +1,154 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/go-redis/redis/v9"
+	"go.uber.org/zap"
+)
+
+func main() {
+	ctx := context.Background()
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr: ":6379",
+	})
+
+	_ = rdb.Set(ctx, "key_with_ttl", "bar", time.Minute).Err()
+	_ = rdb.Set(ctx, "key_without_ttl_1", "", 0).Err()
+	_ = rdb.Set(ctx, "key_without_ttl_2", "", 0).Err()
+
+	checker := NewKeyChecker(rdb, 100)
+
+	start := time.Now()
+	checker.Start(ctx)
+
+	iter := rdb.Scan(ctx, 0, "", 0).Iterator()
+	for iter.Next(ctx) {
+		checker.Add(iter.Val())
+	}
+	if err := iter.Err(); err != nil {
+		panic(err)
+	}
+
+	deleted := checker.Stop()
+	fmt.Println("deleted", deleted, "keys", "in", time.Since(start))
+}
+
+type KeyChecker struct {
+	rdb       *redis.Client
+	batchSize int
+	ch        chan string
+	delCh     chan string
+	wg        sync.WaitGroup
+	deleted   int
+	logger    *zap.Logger
+}
+
+func NewKeyChecker(rdb *redis.Client, batchSize int) *KeyChecker {
+	return &KeyChecker{
+		rdb:       rdb,
+		batchSize: batchSize,
+		ch:        make(chan string, batchSize),
+		delCh:     make(chan string, batchSize),
+		logger:    zap.L(),
+	}
+}
+
+func (c *KeyChecker) Add(key string) {
+	c.ch <- key
+}
+
+func (c *KeyChecker) Start(ctx context.Context) {
+	c.wg.Add(1)
+	go func() {
+		defer c.wg.Done()
+		if err := c.del(ctx); err != nil {
+			panic(err)
+		}
+	}()
+
+	c.wg.Add(1)
+	go func() {
+		defer c.wg.Done()
+		defer close(c.delCh)
+
+		keys := make([]string, 0, c.batchSize)
+
+		for key := range c.ch {
+			keys = append(keys, key)
+			if len(keys) < cap(keys) {
+				continue
+			}
+
+			if err := c.checkKeys(ctx, keys); err != nil {
+				c.logger.Error("checkKeys failed", zap.Error(err))
+			}
+			keys = keys[:0]
+		}
+
+		if len(keys) > 0 {
+			if err := c.checkKeys(ctx, keys); err != nil {
+				c.logger.Error("checkKeys failed", zap.Error(err))
+			}
+			keys = nil
+		}
+	}()
+}
+
+func (c *KeyChecker) Stop() int {
+	close(c.ch)
+	c.wg.Wait()
+	return c.deleted
+}
+
+func (c *KeyChecker) checkKeys(ctx context.Context, keys []string) error {
+	cmds, err := c.rdb.Pipelined(ctx, func(pipe redis.Pipeliner) error {
+		for _, key := range keys {
+			pipe.TTL(ctx, key)
+		}
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+
+	for i, cmd := range cmds {
+		d, err := cmd.(*redis.DurationCmd).Result()
+		if err != nil {
+			return err
+		}
+		if d == -1 {
+			c.delCh <- keys[i]
+		}
+	}
+
+	return nil
+}
+
+func (c *KeyChecker) del(ctx context.Context) error {
+	pipe := c.rdb.Pipeline()
+
+	for key := range c.delCh {
+		fmt.Printf("deleting %s...\n", key)
+		pipe.Del(ctx, key)
+		c.deleted++
+
+		if pipe.Len() < c.batchSize {
+			continue
+		}
+
+		if _, err := pipe.Exec(ctx); err != nil {
+			return err
+		}
+	}
+
+	if _, err := pipe.Exec(ctx); err != nil {
+		return err
+	}
+
+	return nil
+}

example/hll/README.md

@@ -0,0 +1,10 @@
+# Redis HyperLogLog example
+
+To run this example:
+
+```shell
+go run .
+```
+
+See [Using HyperLogLog command with go-redis](https://redis.uptrace.dev/guide/go-redis-hll.html) for
+details.

example/hll/go.mod

@@ -0,0 +1,7 @@
+module github.com/go-redis/redis/example/hll
+
+go 1.14
+
+replace github.com/go-redis/redis/v9 => ../..
+
+require github.com/go-redis/redis/v9 v9.0.0-rc.2

example/hll/go.sum

@@ -0,0 +1,166 @@
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example/hll/main.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/go-redis/redis/v9"
+)
+
+func main() {
+	ctx := context.Background()
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr: ":6379",
+	})
+	_ = rdb.FlushDB(ctx).Err()
+
+	for i := 0; i < 10; i++ {
+		if err := rdb.PFAdd(ctx, "myset", fmt.Sprint(i)).Err(); err != nil {
+			panic(err)
+		}
+	}
+
+	card, err := rdb.PFCount(ctx, "myset").Result()
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println("set cardinality", card)
+}

example/lua-scripting/README.md

@@ -0,0 +1,8 @@
+# Redis Lua scripting example
+
+This is an example for [Redis Lua scripting](https://redis.uptrace.dev/guide/lua-scripting.html)
+article. To run it:
+
+```shell
+go run .
+```

example/lua-scripting/go.mod

@@ -0,0 +1,7 @@
+module github.com/go-redis/redis/example/redis-bloom
+
+go 1.14
+
+replace github.com/go-redis/redis/v9 => ../..
+
+require github.com/go-redis/redis/v9 v9.0.0-rc.2

example/lua-scripting/go.sum

@@ -0,0 +1,166 @@
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+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

example/lua-scripting/main.go

@@ -0,0 +1,66 @@
+package main
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/go-redis/redis/v9"
+)
+
+func main() {
+	ctx := context.Background()
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr: ":6379",
+	})
+	_ = rdb.FlushDB(ctx).Err()
+
+	fmt.Printf("# INCR BY\n")
+	for _, change := range []int{+1, +5, 0} {
+		num, err := incrBy.Run(ctx, rdb, []string{"my_counter"}, change).Int()
+		if err != nil {
+			panic(err)
+		}
+		fmt.Printf("incr by %d: %d\n", change, num)
+	}
+
+	fmt.Printf("\n# SUM\n")
+	sum, err := sum.Run(ctx, rdb, []string{"my_sum"}, 1, 2, 3).Int()
+	if err != nil {
+		panic(err)
+	}
+	fmt.Printf("sum is: %d\n", sum)
+}
+
+var incrBy = redis.NewScript(`
+local key = KEYS[1]
+local change = ARGV[1]
+
+local value = redis.call("GET", key)
+if not value then
+  value = 0
+end
+
+value = value + change
+redis.call("SET", key, value)
+
+return value
+`)
+
+var sum = redis.NewScript(`
+local key = KEYS[1]
+
+local sum = redis.call("GET", key)
+if not sum then
+  sum = 0
+end
+
+local num_arg = #ARGV
+for i = 1, num_arg do
+  sum = sum + ARGV[i]
+end
+
+redis.call("SET", key, sum)
+
+return sum
+`)

example/otel/README.md

@@ -1,9 +1,59 @@
-### OpenTelemetry Example 
-Prints spans and metrics to the console.
-#### To Run:
-- `docker-compose up -d`
-- `go run .`
+# Example for go-redis OpenTelemetry instrumentation
 
-When you're finished, be sure to run `docker-compose down` to shutdown
-the redis server.
+This example demonstrates how to monitor Redis using OpenTelemetry and
+[Uptrace](https://github.com/uptrace/uptrace). It requires Docker to start Redis Server and Uptrace.
 
+See
+[Monitoring Go Redis Performance and Errors](https://redis.uptrace.dev/guide/go-redis-monitoring.html)
+for details.
+
+**Step 1**. Download the example using Git:
+
+```shell
+git clone https://github.com/go-redis/redis.git
+cd example/otel
+```
+
+**Step 2**. Start the services using Docker:
+
+```shell
+docker-compose up -d
+```
+
+**Step 3**. Make sure Uptrace is running:
+
+```shell
+docker-compose logs uptrace
+```
+
+**Step 4**. Run the Redis client example and Follow the link to view the trace:
+
+```shell
+go run client.go
+trace: http://localhost:14318/traces/ee029d8782242c8ed38b16d961093b35
+```
+
+![Redis trace](./image/redis-trace.png)
+
+You can also open Uptrace UI at [http://localhost:14318](http://localhost:14318) to view available
+spans, logs, and metrics.
+
+## Redis monitoring
+
+You can also [monitor Redis performance](https://uptrace.dev/opentelemetry/redis-monitoring.html)
+metrics By installing OpenTelemetry Collector.
+
+[OpenTelemetry Collector](https://uptrace.dev/opentelemetry/collector.html) is an agent that pulls
+telemetry data from systems you want to monitor and sends it to APM tools using the OpenTelemetry
+protocol (OTLP).
+
+When telemetry data reaches Uptrace, it automatically generates a Redis dashboard from a pre-defined
+template.
+
+![Redis dashboard](./image/metrics.png)
+
+## Links
+
+- [Uptrace open-source APM](https://uptrace.dev/get/open-source-apm.html)
+- [OpenTelemetry Go instrumentations](https://uptrace.dev/opentelemetry/instrumentations/?lang=go)
+- [OpenTelemetry Go Tracing API](https://uptrace.dev/opentelemetry/go-tracing.html)

example/otel/client.go

@@ -0,0 +1,91 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"sync"
+	"time"
+
+	"github.com/uptrace/uptrace-go/uptrace"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/codes"
+
+	"github.com/go-redis/redis/extra/redisotel/v9"
+	"github.com/go-redis/redis/v9"
+)
+
+var tracer = otel.Tracer("github.com/go-redis/redis/example/otel")
+
+func main() {
+	ctx := context.Background()
+
+	uptrace.ConfigureOpentelemetry(
+		// copy your project DSN here or use UPTRACE_DSN env var
+		uptrace.WithDSN("http://project2_secret_token@localhost:14317/2"),
+
+		uptrace.WithServiceName("myservice"),
+		uptrace.WithServiceVersion("v1.0.0"),
+	)
+	defer uptrace.Shutdown(ctx)
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr: ":6379",
+	})
+	if err := redisotel.InstrumentTracing(rdb); err != nil {
+		panic(err)
+	}
+	if err := redisotel.InstrumentMetrics(rdb); err != nil {
+		panic(err)
+	}
+
+	for i := 0; i < 1e6; i++ {
+		ctx, rootSpan := tracer.Start(ctx, "handleRequest")
+
+		if err := handleRequest(ctx, rdb); err != nil {
+			rootSpan.RecordError(err)
+			rootSpan.SetStatus(codes.Error, err.Error())
+		}
+
+		rootSpan.End()
+
+		if i == 0 {
+			fmt.Printf("view trace: %s\n", uptrace.TraceURL(rootSpan))
+		}
+
+		time.Sleep(time.Second)
+	}
+}
+
+func handleRequest(ctx context.Context, rdb *redis.Client) error {
+	if err := rdb.Set(ctx, "First value", "value_1", 0).Err(); err != nil {
+		return err
+	}
+	if err := rdb.Set(ctx, "Second value", "value_2", 0).Err(); err != nil {
+		return err
+	}
+
+	var group sync.WaitGroup
+
+	for i := 0; i < 20; i++ {
+		group.Add(1)
+		go func() {
+			defer group.Done()
+			val := rdb.Get(ctx, "Second value").Val()
+			if val != "value_2" {
+				log.Printf("%q != %q", val, "value_2")
+			}
+		}()
+	}
+
+	group.Wait()
+
+	if err := rdb.Del(ctx, "First value").Err(); err != nil {
+		return err
+	}
+	if err := rdb.Del(ctx, "Second value").Err(); err != nil {
+		return err
+	}
+
+	return nil
+}

example/otel/config/alertmanager.yml

@@ -0,0 +1,53 @@
+# See https://prometheus.io/docs/alerting/latest/configuration/ for details.
+
+global:
+  # The smarthost and SMTP sender used for mail notifications.
+  smtp_smarthost: 'mailhog:1025'
+  smtp_from: 'alertmanager@example.com'
+  smtp_require_tls: false
+
+receivers:
+  - name: 'team-X'
+    email_configs:
+      - to: 'some-receiver@example.com'
+        send_resolved: true
+
+# The root route on which each incoming alert enters.
+route:
+  # The labels by which incoming alerts are grouped together. For example,
+  # multiple alerts coming in for cluster=A and alertname=LatencyHigh would
+  # be batched into a single group.
+  group_by: ['alertname', 'cluster', 'service']
+
+  # When a new group of alerts is created by an incoming alert, wait at
+  # least 'group_wait' to send the initial notification.
+  # This way ensures that you get multiple alerts for the same group that start
+  # firing shortly after another are batched together on the first
+  # notification.
+  group_wait: 30s
+
+  # When the first notification was sent, wait 'group_interval' to send a batch
+  # of new alerts that started firing for that group.
+  group_interval: 5m
+
+  # If an alert has successfully been sent, wait 'repeat_interval' to
+  # resend them.
+  repeat_interval: 3h
+
+  # A default receiver
+  receiver: team-X
+
+  # All the above attributes are inherited by all child routes and can
+  # overwritten on each.
+
+  # The child route trees.
+  routes:
+    # This route matches error alerts created from spans or logs.
+    - matchers:
+        - alert_kind="error"
+      group_interval: 24h
+      receiver: team-X
+
+# The directory from which notification templates are read.
+templates:
+  - '/etc/alertmanager/template/*.tmpl'

example/otel/config/otel-collector.yaml

@@ -0,0 +1,68 @@
+extensions:
+  health_check:
+  pprof:
+    endpoint: 0.0.0.0:1777
+  zpages:
+    endpoint: 0.0.0.0:55679
+
+receivers:
+  otlp:
+    protocols:
+      grpc:
+      http:
+  hostmetrics:
+    collection_interval: 10s
+    scrapers:
+      cpu:
+      disk:
+      load:
+      filesystem:
+      memory:
+      network:
+      paging:
+  redis:
+    endpoint: 'redis-server:6379'
+    collection_interval: 10s
+  jaeger:
+    protocols:
+      grpc:
+
+processors:
+  resourcedetection:
+    detectors: ['system']
+  batch:
+    send_batch_size: 10000
+    timeout: 10s
+
+exporters:
+  logging:
+    logLevel: debug
+  otlp:
+    endpoint: uptrace:14317
+    tls:
+      insecure: true
+    headers: { 'uptrace-dsn': 'http://project2_secret_token@localhost:14317/2' }
+
+service:
+  # telemetry:
+  #   logs:
+  #     level: DEBUG
+  pipelines:
+    traces:
+      receivers: [otlp, jaeger]
+      processors: [batch]
+      exporters: [otlp, logging]
+    metrics:
+      receivers: [otlp]
+      processors: [batch]
+      exporters: [otlp]
+    metrics/hostmetrics:
+      receivers: [hostmetrics, redis]
+      processors: [batch, resourcedetection]
+      exporters: [otlp]
+    logs:
+      receivers: [otlp]
+      processors: [batch]
+      exporters: [otlp]
+
+  extensions: [health_check, pprof, zpages]

example/otel/config/vector.toml

@@ -0,0 +1,39 @@
+[sources.syslog_logs]
+type = "demo_logs"
+format = "syslog"
+interval = 0.1
+
+[sources.apache_common_logs]
+type = "demo_logs"
+format = "apache_common"
+interval = 0.1
+
+[sources.apache_error_logs]
+type = "demo_logs"
+format = "apache_error"
+interval = 0.1
+
+[sources.json_logs]
+type = "demo_logs"
+format = "json"
+interval = 0.1
+
+# Parse Syslog logs
+# See the Vector Remap Language reference for more info: https://vrl.dev
+[transforms.parse_logs]
+type = "remap"
+inputs = ["syslog_logs"]
+source = '''
+. = parse_syslog!(string!(.message))
+'''
+
+# Export data to Uptrace.
+[sinks.uptrace]
+type = "http"
+inputs = ["parse_logs", "apache_common_logs", "apache_error_logs", "json_logs"]
+encoding.codec = "json"
+framing.method = "newline_delimited"
+compression = "gzip"
+uri = "http://uptrace:14318/api/v1/vector/logs"
+#uri = "https://api.uptrace.dev/api/v1/vector/logs"
+headers.uptrace-dsn = "http://project2_secret_token@localhost:14317/2"

example/otel/docker-compose.yml

@@ -1,8 +1,78 @@
 version: '3'
+
 services:
+  clickhouse:
+    image: clickhouse/clickhouse-server:22.7
+    restart: on-failure
+    environment:
+      CLICKHOUSE_DB: uptrace
+    healthcheck:
+      test: ['CMD', 'wget', '--spider', '-q', 'localhost:8123/ping']
+      interval: 1s
+      timeout: 1s
+      retries: 30
+    volumes:
+      - ch_data:/var/lib/clickhouse
+    ports:
+      - '8123:8123'
+      - '9000:9000'
+
+  uptrace:
+    image: 'uptrace/uptrace:1.2.4'
+    #image: 'uptrace/uptrace-dev:latest'
+    restart: on-failure
+    volumes:
+      - uptrace_data:/var/lib/uptrace
+      - ./uptrace.yml:/etc/uptrace/uptrace.yml
+    #environment:
+    #  - DEBUG=2
+    ports:
+      - '14317:14317'
+      - '14318:14318'
+    depends_on:
+      clickhouse:
+        condition: service_healthy
+
+  otel-collector:
+    image: otel/opentelemetry-collector-contrib:0.58.0
+    restart: on-failure
+    volumes:
+      - ./config/otel-collector.yaml:/etc/otelcol-contrib/config.yaml
+    ports:
+      - '4317:4317'
+      - '4318:4318'
+
+  vector:
+    image: timberio/vector:0.24.X-alpine
+    volumes:
+      - ./config/vector.toml:/etc/vector/vector.toml:ro
+
+  alertmanager:
+    image: prom/alertmanager:v0.24.0
+    restart: on-failure
+    volumes:
+      - ./config/alertmanager.yml:/etc/alertmanager/config.yml
+      - alertmanager_data:/alertmanager
+    ports:
+      - 9093:9093
+    command:
+      - '--config.file=/etc/alertmanager/config.yml'
+      - '--storage.path=/alertmanager'
+
+  mailhog:
+    image: mailhog/mailhog:v1.0.1
+    restart: on-failure
+    ports:
+      - '8025:8025'
+
   redis-server:
     image: redis
     ports:
-      - "6379:6379"
+      - '6379:6379'
   redis-cli:
     image: redis
+
+volumes:
+  uptrace_data:
+  ch_data:
+  alertmanager_data:

example/otel/example-client.go

@@ -1,74 +0,0 @@
-package main
-
-import (
-	"context"
-	"log"
-	"sync"
-	"time"
-
-	"github.com/go-redis/redis/extra/redisotel/v8"
-	"github.com/go-redis/redis/v8"
-	"go.opentelemetry.io/otel"
-	"go.opentelemetry.io/otel/exporters/stdout/stdouttrace"
-	sdktrace "go.opentelemetry.io/otel/sdk/trace"
-)
-
-func main() {
-	ctx := context.Background()
-
-	stop := runExporter(ctx)
-	defer stop(ctx)
-
-	rdb := redis.NewClient(&redis.Options{
-		Addr: ":6379",
-	})
-
-	rdb.AddHook(redisotel.TracingHook{})
-
-	tracer := otel.Tracer("Example tracer")
-	ctx, span := tracer.Start(ctx, "start-test-span")
-
-	rdb.Set(ctx, "First value", "value_1", 0)
-
-	rdb.Set(ctx, "Second value", "value_2", 0)
-
-	var group sync.WaitGroup
-
-	for i := 0; i < 20; i++ {
-		group.Add(1)
-		go func() {
-			defer group.Done()
-			val := rdb.Get(ctx, "Second value").Val()
-			if val != "value_2" {
-				log.Fatalf("val was not set. expected: %s but got: %s", "value_2", val)
-			}
-		}()
-	}
-	group.Wait()
-
-	rdb.Del(ctx, "First value")
-	rdb.Del(ctx, "Second value")
-
-	// Wait some time to allow spans to export
-	<-time.After(5 * time.Second)
-	span.End()
-}
-
-func runExporter(ctx context.Context) func(context.Context) {
-	provider := sdktrace.NewTracerProvider()
-	otel.SetTracerProvider(provider)
-
-	exp, err := stdouttrace.New(stdouttrace.WithPrettyPrint())
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	bsp := sdktrace.NewBatchSpanProcessor(exp)
-	provider.RegisterSpanProcessor(bsp)
-
-	return func(ctx context.Context) {
-		if err := provider.Shutdown(ctx); err != nil {
-			log.Printf("Shutdown failed: %s", err)
-		}
-	}
-}

example/otel/go.mod

@@ -2,17 +2,15 @@ module github.com/go-redis/redis/example/otel
 
 go 1.14
 
-replace github.com/go-redis/redis/v8 => ../..
+replace github.com/go-redis/redis/v9 => ../..
 
-replace github.com/go-redis/redis/extra/redisotel/v8 => ../../extra/redisotel
+replace github.com/go-redis/redis/extra/redisotel/v9 => ../../extra/redisotel
 
-replace github.com/go-redis/redis/extra/rediscmd/v8 => ../../extra/rediscmd
+replace github.com/go-redis/redis/extra/rediscmd/v9 => ../../extra/rediscmd
 
 require (
-	github.com/go-redis/redis/extra/redisotel/v8 v8.11.3
-	github.com/go-redis/redis/v8 v8.11.3
-	go.opentelemetry.io/otel v1.0.0-RC2
-	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.0.0-RC2
-	go.opentelemetry.io/otel/sdk v1.0.0-RC2
-	golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e // indirect
+	github.com/go-redis/redis/extra/redisotel/v9 v9.0.0-rc.2
+	github.com/go-redis/redis/v9 v9.0.0-rc.2
+	github.com/uptrace/uptrace-go v1.11.6
+	go.opentelemetry.io/otel v1.11.1
 )

example/otel/uptrace.yml

@@ -0,0 +1,297 @@
+##
+## Uptrace configuration file.
+## See https://uptrace.dev/get/config.html for details.
+##
+## You can use environment variables anywhere in this file, for example:
+##
+##   foo: $FOO
+##   bar: ${BAR}
+##   baz: ${BAZ:default}
+##
+## To escape `$`, use `$$`, for example:
+##
+##   foo: $$FOO_BAR
+##
+
+##
+## ClickHouse database credentials.
+##
+ch:
+  # Connection string for ClickHouse database. For example:
+  # clickhouse://<user>:<password>@<host>:<port>/<database>?sslmode=disable
+  #
+  # See https://clickhouse.uptrace.dev/guide/golang-clickhouse.html#options
+  dsn: 'clickhouse://default:@clickhouse:9000/uptrace?sslmode=disable'
+
+##
+## A list of pre-configured projects. Each project is fully isolated.
+##
+projects:
+  # Conventionally, the first project is used to monitor Uptrace itself.
+  - id: 1
+    name: Uptrace
+    # Token grants write access to the project. Keep a secret.
+    token: project1_secret_token
+    pinned_attrs:
+      - service.name
+      - host.name
+      - deployment.environment
+    # Group spans by deployment.environment attribute.
+    group_by_env: false
+    # Group funcs spans by service.name attribute.
+    group_funcs_by_service: false
+
+  # Other projects can be used to monitor your applications.
+  # To monitor micro-services or multiple related services, use a single project.
+  - id: 2
+    name: My project
+    token: project2_secret_token
+    pinned_attrs:
+      - service.name
+      - host.name
+      - deployment.environment
+    # Group spans by deployment.environment attribute.
+    group_by_env: false
+    # Group funcs spans by service.name attribute.
+    group_funcs_by_service: false
+
+##
+## Create metrics from spans and events.
+##
+metrics_from_spans:
+  - name: uptrace.tracing.spans_duration
+    description: Spans duration (excluding events)
+    instrument: histogram
+    unit: microseconds
+    value: span.duration / 1000
+    attrs:
+      - span.system as system
+      - service.name as service
+      - host.name as host
+      - span.status_code as status
+    where: not span.is_event
+
+  - name: uptrace.tracing.spans
+    description: Spans count (excluding events)
+    instrument: counter
+    unit: 1
+    value: span.count
+    attrs:
+      - span.system as system
+      - service.name as service
+      - host.name as host
+      - span.status_code as status
+    where: not span.is_event
+
+  - name: uptrace.tracing.events
+    description: Events count (excluding spans)
+    instrument: counter
+    unit: 1
+    value: span.count
+    attrs:
+      - span.system as system
+      - service.name as service
+      - host.name as host
+    where: span.is_event
+
+##
+## To require authentication, uncomment the following section.
+##
+auth:
+  # users:
+  #   - username: uptrace
+  #     password: uptrace
+  #   - username: admin
+  #     password: admin
+
+  # # Cloudflare user provider: uses Cloudflare Zero Trust Access (Identity)
+  # # See https://developers.cloudflare.com/cloudflare-one/identity/ for more info.
+  # cloudflare:
+  #   # The base URL of the Cloudflare Zero Trust team.
+  #   - team_url: https://myteam.cloudflareaccess.com
+  #     # The Application Audience (AUD) Tag for this application.
+  #     # You can retrieve this from the Cloudflare Zero Trust 'Access' Dashboard.
+  #     audience: bea6df23b944e4a0cd178609ba1bb64dc98dfe1f66ae7b918e563f6cf28b37e0
+
+  # # OpenID Connect (Single Sign-On)
+  # oidc:
+  #   # The ID is used in API endpoints, for example, in redirect URL
+  #   # `http://<uptrace-host>/api/v1/sso/<oidc-id>/callback`.
+  #   - id: keycloak
+  #     # Display name for the button in the login form.
+  #     # Default to 'OpenID Connect'
+  #     display_name: Keycloak
+  #     # The base URL for the OIDC provider.
+  #     issuer_url: http://localhost:8080/realms/uptrace
+  #     # The OAuth 2.0 Client ID
+  #     client_id: uptrace
+  #     # The OAuth 2.0 Client Secret
+  #     client_secret: ogbhd8Q0X0e5AZFGSG3m9oirPvnetqkA
+  #     # Additional OAuth 2.0 scopes to request from the OIDC provider.
+  #     # Defaults to 'profile'. 'openid' is requested by default and need not be specified.
+  #     scopes:
+  #       - profile
+  #     # The OIDC UserInfo claim to use as the user's username.
+  #     # Defaults to 'preferred_username'.
+  #     claim: preferred_username
+
+##
+## Alerting rules for monitoring metrics.
+##
+## See https://uptrace.dev/get/alerting.html for details.
+##
+alerting:
+  rules:
+    - name: Network errors
+      metrics:
+        - system.network.errors as $net_errors
+      query:
+        - $net_errors > 0 group by host.name
+      # for the last 5 minutes
+      for: 5m
+      annotations:
+        summary: '{{ $labels.host_name }} has high number of net errors: {{ $values.net_errors }}'
+
+    - name: Filesystem usage >= 90%
+      metrics:
+        - system.filesystem.usage as $fs_usage
+      query:
+        - group by host.name
+        - group by device
+        - where device !~ "loop"
+        - $fs_usage{state="used"} / $fs_usage >= 0.9
+      for: 5m
+      annotations:
+        summary: '{{ $labels.host_name }} has high FS usage: {{ $values.fs_usage }}'
+
+    - name: Uptrace is dropping spans
+      metrics:
+        - uptrace.projects.spans as $spans
+      query:
+        - $spans{type=dropped} > 0
+      for: 1m
+      annotations:
+        summary: 'Uptrace has dropped {{ $values.spans }} spans'
+
+    - name: Always firing (for fun and testing)
+      metrics:
+        - process.runtime.go.goroutines as $goroutines
+      query:
+        - $goroutines >= 0 group by host.name
+      for: 1m
+      annotations:
+        summary: '{{ $labels.host_name }} has high number of goroutines: {{ $values.goroutines }}'
+
+  # Create alerts from error logs and span events.
+  create_alerts_from_spans:
+    enabled: true
+    labels:
+      alert_kind: error
+
+##
+## AlertManager client configuration.
+## See https://uptrace.dev/get/alerting.html for details.
+##
+## Note that this is NOT an AlertManager config and you need to configure AlertManager separately.
+## See https://prometheus.io/docs/alerting/latest/configuration/ for details.
+##
+alertmanager_client:
+  # AlertManager API endpoints that Uptrace uses to manage alerts.
+  urls:
+    - 'http://alertmanager:9093/api/v2/alerts'
+
+##
+## Various options to tweak ClickHouse schema.
+## For changes to take effect, you need reset the ClickHouse database with `ch reset`.
+##
+ch_schema:
+  # Compression codec, for example, LZ4, ZSTD(3), or Default.
+  compression: ZSTD(3)
+
+  # Whether to use ReplicatedMergeTree instead of MergeTree.
+  replicated: false
+
+  # Cluster name for Distributed tables and ON CLUSTER clause.
+  #cluster: uptrace1
+
+  spans:
+    storage_policy: 'default'
+    # Delete spans data after 30 days.
+    ttl_delete: 30 DAY
+
+  metrics:
+    storage_policy: 'default'
+    # Delete metrics data after 90 days.
+    ttl_delete: 90 DAY
+
+##
+## Addresses on which Uptrace receives gRPC and HTTP requests.
+##
+listen:
+  # OTLP/gRPC API.
+  grpc:
+    addr: ':14317'
+    # tls:
+    #   cert_file: config/tls/uptrace.crt
+    #   key_file: config/tls/uptrace.key
+
+  # OTLP/HTTP API and Uptrace API with UI.
+  http:
+    addr: ':14318'
+    # tls:
+    #   cert_file: config/tls/uptrace.crt
+    #   key_file: config/tls/uptrace.key
+
+##
+## Various options for Uptrace UI.
+##
+site:
+  # Overrides public URL for Vue-powered UI in case you put Uptrace behind a proxy.
+  #addr: 'https://uptrace.mydomain.com'
+
+##
+## Spans processing options.
+##
+spans:
+  # The size of the Go chan used to buffer incoming spans.
+  # If the buffer is full, Uptrace starts to drop spans.
+  #buffer_size: 100000
+
+  # The number of spans to insert in a single query.
+  #batch_size: 10000
+
+##
+## Metrics processing options.
+##
+metrics:
+  # List of attributes to drop for being noisy.
+  drop_attrs:
+    - telemetry.sdk.language
+    - telemetry.sdk.name
+    - telemetry.sdk.version
+
+  # The size of the Go chan used to buffer incoming measures.
+  # If the buffer is full, Uptrace starts to drop measures.
+  #buffer_size: 100000
+
+  # The number of measures to insert in a single query.
+  #batch_size: 10000
+
+##
+## SQLite/PostgreSQL db that is used to store metadata such us metric names, dashboards, alerts,
+## and so on.
+##
+db:
+  # Either sqlite or postgres.
+  driver: sqlite
+  # Database connection string.
+  #
+  # Uptrace automatically creates SQLite database file in the current working directory.
+  # Make sure the directory is writable by Uptrace process.
+  dsn: 'file:uptrace.sqlite3?_pragma=foreign_keys(1)&_pragma=busy_timeout(1000)'
+
+# Secret key that is used to sign JWT tokens etc.
+secret_key: 102c1a557c314fc28198acd017960843
+
+# Enable to log HTTP requests and database queries.
+debug: false

example/redis-bloom/README.md

@@ -0,0 +1,12 @@
+# RedisBloom example for go-redis
+
+This is an example for
+[Bloom, Cuckoo, Count-Min, Top-K](https://redis.uptrace.dev/guide/bloom-cuckoo-count-min-top-k.html)
+article.
+
+To run it, you need to compile and install
+[RedisBloom](https://oss.redis.com/redisbloom/Quick_Start/#building) module:
+
+```shell
+go run .
+```

example/redis-bloom/go.mod

@@ -0,0 +1,7 @@
+module github.com/go-redis/redis/example/redis-bloom
+
+go 1.14
+
+replace github.com/go-redis/redis/v9 => ../..
+
+require github.com/go-redis/redis/v9 v9.0.0-rc.2

example/redis-bloom/go.sum

@@ -0,0 +1,166 @@
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example/redis-bloom/main.go

@@ -0,0 +1,155 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"math/rand"
+
+	"github.com/go-redis/redis/v9"
+)
+
+func main() {
+	ctx := context.Background()
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr: ":6379",
+	})
+	_ = rdb.FlushDB(ctx).Err()
+
+	fmt.Printf("# BLOOM\n")
+	bloomFilter(ctx, rdb)
+
+	fmt.Printf("\n# CUCKOO\n")
+	cuckooFilter(ctx, rdb)
+
+	fmt.Printf("\n# COUNT-MIN\n")
+	countMinSketch(ctx, rdb)
+
+	fmt.Printf("\n# TOP-K\n")
+	topK(ctx, rdb)
+}
+
+func bloomFilter(ctx context.Context, rdb *redis.Client) {
+	inserted, err := rdb.Do(ctx, "BF.ADD", "bf_key", "item0").Bool()
+	if err != nil {
+		panic(err)
+	}
+	if inserted {
+		fmt.Println("item0 was inserted")
+	} else {
+		fmt.Println("item0 already exists")
+	}
+
+	for _, item := range []string{"item0", "item1"} {
+		exists, err := rdb.Do(ctx, "BF.EXISTS", "bf_key", item).Bool()
+		if err != nil {
+			panic(err)
+		}
+		if exists {
+			fmt.Printf("%s does exist\n", item)
+		} else {
+			fmt.Printf("%s does not exist\n", item)
+		}
+	}
+
+	bools, err := rdb.Do(ctx, "BF.MADD", "bf_key", "item1", "item2", "item3").BoolSlice()
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println("adding multiple items:", bools)
+}
+
+func cuckooFilter(ctx context.Context, rdb *redis.Client) {
+	inserted, err := rdb.Do(ctx, "CF.ADDNX", "cf_key", "item0").Bool()
+	if err != nil {
+		panic(err)
+	}
+	if inserted {
+		fmt.Println("item0 was inserted")
+	} else {
+		fmt.Println("item0 already exists")
+	}
+
+	for _, item := range []string{"item0", "item1"} {
+		exists, err := rdb.Do(ctx, "CF.EXISTS", "cf_key", item).Bool()
+		if err != nil {
+			panic(err)
+		}
+		if exists {
+			fmt.Printf("%s does exist\n", item)
+		} else {
+			fmt.Printf("%s does not exist\n", item)
+		}
+	}
+
+	deleted, err := rdb.Do(ctx, "CF.DEL", "cf_key", "item0").Bool()
+	if err != nil {
+		panic(err)
+	}
+	if deleted {
+		fmt.Println("item0 was deleted")
+	}
+}
+
+func countMinSketch(ctx context.Context, rdb *redis.Client) {
+	if err := rdb.Do(ctx, "CMS.INITBYPROB", "count_min", 0.001, 0.01).Err(); err != nil {
+		panic(err)
+	}
+
+	items := []string{"item1", "item2", "item3", "item4", "item5"}
+	counts := make(map[string]int, len(items))
+
+	for i := 0; i < 10000; i++ {
+		n := rand.Intn(len(items))
+		item := items[n]
+
+		if err := rdb.Do(ctx, "CMS.INCRBY", "count_min", item, 1).Err(); err != nil {
+			panic(err)
+		}
+		counts[item]++
+	}
+
+	for item, count := range counts {
+		ns, err := rdb.Do(ctx, "CMS.QUERY", "count_min", item).Int64Slice()
+		if err != nil {
+			panic(err)
+		}
+		fmt.Printf("%s: count-min=%d actual=%d\n", item, ns[0], count)
+	}
+}
+
+func topK(ctx context.Context, rdb *redis.Client) {
+	if err := rdb.Do(ctx, "TOPK.RESERVE", "top_items", 3).Err(); err != nil {
+		panic(err)
+	}
+
+	counts := map[string]int{
+		"item1": 1000,
+		"item2": 2000,
+		"item3": 3000,
+		"item4": 4000,
+		"item5": 5000,
+		"item6": 6000,
+	}
+
+	for item, count := range counts {
+		for i := 0; i < count; i++ {
+			if err := rdb.Do(ctx, "TOPK.INCRBY", "top_items", item, 1).Err(); err != nil {
+				panic(err)
+			}
+		}
+	}
+
+	items, err := rdb.Do(ctx, "TOPK.LIST", "top_items").StringSlice()
+	if err != nil {
+		panic(err)
+	}
+
+	for _, item := range items {
+		ns, err := rdb.Do(ctx, "TOPK.COUNT", "top_items", item).Int64Slice()
+		if err != nil {
+			panic(err)
+		}
+		fmt.Printf("%s: top-k=%d actual=%d\n", item, ns[0], counts[item])
+	}
+}

example/scan-struct/README.md

@@ -0,0 +1,11 @@
+# Example for scanning hash fields into a struct
+
+To run this example:
+
+```shell
+go run .
+```
+
+See
+[Redis: Scanning hash fields into a struct](https://redis.uptrace.dev/guide/scanning-hash-fields.html)
+for details.

example/scan-struct/go.mod

@@ -0,0 +1,10 @@
+module github.com/go-redis/redis/example/scan-struct
+
+go 1.14
+
+replace github.com/go-redis/redis/v9 => ../..
+
+require (
+	github.com/davecgh/go-spew v1.1.1
+	github.com/go-redis/redis/v9 v9.0.0-rc.2
+)

example/scan-struct/go.sum

@@ -0,0 +1,166 @@
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+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
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+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
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+github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
+github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
+github.com/go-logr/logr v1.2.3 h1:2DntVwHkVopvECVRSlL5PSo9eG+cAkDCuckLubN+rq0=
+github.com/go-logr/logr v1.2.3/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
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+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

example/scan-struct/main.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"context"
+
+	"github.com/davecgh/go-spew/spew"
+
+	"github.com/go-redis/redis/v9"
+)
+
+type Model struct {
+	Str1    string   `redis:"str1"`
+	Str2    string   `redis:"str2"`
+	Int     int      `redis:"int"`
+	Bool    bool     `redis:"bool"`
+	Ignored struct{} `redis:"-"`
+}
+
+func main() {
+	ctx := context.Background()
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr: ":6379",
+	})
+
+	// Set some fields.
+	if _, err := rdb.Pipelined(ctx, func(rdb redis.Pipeliner) error {
+		rdb.HSet(ctx, "key", "str1", "hello")
+		rdb.HSet(ctx, "key", "str2", "world")
+		rdb.HSet(ctx, "key", "int", 123)
+		rdb.HSet(ctx, "key", "bool", 1)
+		return nil
+	}); err != nil {
+		panic(err)
+	}
+
+	var model1, model2 Model
+
+	// Scan all fields into the model.
+	if err := rdb.HGetAll(ctx, "key").Scan(&model1); err != nil {
+		panic(err)
+	}
+
+	// Or scan a subset of the fields.
+	if err := rdb.HMGet(ctx, "key", "str1", "int").Scan(&model2); err != nil {
+		panic(err)
+	}
+
+	spew.Dump(model1)
+	spew.Dump(model2)
+}

example_instrumentation_test.go

@@ -3,32 +3,40 @@ package redis_test
 import (
 	"context"
 	"fmt"
+	"net"
 
-	"github.com/go-redis/redis/v8"
+	"github.com/go-redis/redis/v9"
 )
 
 type redisHook struct{}
 
 var _ redis.Hook = redisHook{}
 
-func (redisHook) BeforeProcess(ctx context.Context, cmd redis.Cmder) (context.Context, error) {
-	fmt.Printf("starting processing: <%s>\n", cmd)
-	return ctx, nil
+func (redisHook) DialHook(hook redis.DialHook) redis.DialHook {
+	return func(ctx context.Context, network, addr string) (net.Conn, error) {
+		fmt.Printf("dialing %s %s\n", network, addr)
+		conn, err := hook(ctx, network, addr)
+		fmt.Printf("finished dialing %s %s\n", network, addr)
+		return conn, err
+	}
 }
 
-func (redisHook) AfterProcess(ctx context.Context, cmd redis.Cmder) error {
-	fmt.Printf("finished processing: <%s>\n", cmd)
-	return nil
+func (redisHook) ProcessHook(hook redis.ProcessHook) redis.ProcessHook {
+	return func(ctx context.Context, cmd redis.Cmder) error {
+		fmt.Printf("starting processing: <%s>\n", cmd)
+		err := hook(ctx, cmd)
+		fmt.Printf("finished processing: <%s>\n", cmd)
+		return err
+	}
 }
 
-func (redisHook) BeforeProcessPipeline(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
-	fmt.Printf("pipeline starting processing: %v\n", cmds)
-	return ctx, nil
-}
-
-func (redisHook) AfterProcessPipeline(ctx context.Context, cmds []redis.Cmder) error {
-	fmt.Printf("pipeline finished processing: %v\n", cmds)
-	return nil
+func (redisHook) ProcessPipelineHook(hook redis.ProcessPipelineHook) redis.ProcessPipelineHook {
+	return func(ctx context.Context, cmds []redis.Cmder) error {
+		fmt.Printf("pipeline starting processing: %v\n", cmds)
+		err := hook(ctx, cmds)
+		fmt.Printf("pipeline finished processing: %v\n", cmds)
+		return err
+	}
 }
 
 func Example_instrumentation() {
@@ -39,6 +47,8 @@ func Example_instrumentation() {
 
 	rdb.Ping(ctx)
 	// Output: starting processing: <ping: >
+	// dialing tcp :6379
+	// finished dialing tcp :6379
 	// finished processing: <ping: PONG>
 }
 
@@ -54,6 +64,8 @@ func ExamplePipeline_instrumentation() {
 		return nil
 	})
 	// Output: pipeline starting processing: [ping:  ping: ]
+	// dialing tcp :6379
+	// finished dialing tcp :6379
 	// pipeline finished processing: [ping: PONG ping: PONG]
 }
 
@@ -70,6 +82,8 @@ func ExampleClient_Watch_instrumentation() {
 	}, "foo")
 	// Output:
 	// starting processing: <watch foo: >
+	// dialing tcp :6379
+	// finished dialing tcp :6379
 	// finished processing: <watch foo: OK>
 	// starting processing: <ping: >
 	// finished processing: <ping: PONG>

example_test.go

@@ -7,7 +7,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-redis/redis/v8"
+	"github.com/go-redis/redis/v9"
 )
 
 var (
@@ -39,13 +39,14 @@ func ExampleNewClient() {
 }
 
 func ExampleParseURL() {
-	opt, err := redis.ParseURL("redis://:qwerty@localhost:6379/1")
+	opt, err := redis.ParseURL("redis://:qwerty@localhost:6379/1?dial_timeout=5s")
 	if err != nil {
 		panic(err)
 	}
 	fmt.Println("addr is", opt.Addr)
 	fmt.Println("db is", opt.DB)
 	fmt.Println("password is", opt.Password)
+	fmt.Println("dial timeout is", opt.DialTimeout)
 
 	// Create client as usually.
 	_ = redis.NewClient(opt)
@@ -53,6 +54,7 @@ func ExampleParseURL() {
 	// Output: addr is localhost:6379
 	// db is 1
 	// password is qwerty
+	// dial timeout is 5s
 }
 
 func ExampleNewFailoverClient() {
@@ -153,7 +155,7 @@ func ExampleClient() {
 }
 
 func ExampleConn() {
-	conn := rdb.Conn(context.Background())
+	conn := rdb.Conn()
 
 	err := conn.ClientSetName(ctx, "foobar").Err()
 	if err != nil {
@@ -188,8 +190,8 @@ func ExampleClient_Set() {
 	}
 }
 
-func ExampleClient_SetEX() {
-	err := rdb.SetEX(ctx, "key", "value", time.Hour).Err()
+func ExampleClient_SetEx() {
+	err := rdb.SetEx(ctx, "key", "value", time.Hour).Err()
 	if err != nil {
 		panic(err)
 	}
@@ -276,9 +278,38 @@ func ExampleClient_ScanType() {
 	// Output: found 33 keys
 }
 
-// ExampleStringStringMapCmd_Scan shows how to scan the results of a map fetch
+// ExampleClient_ScanType_hashType uses the keyType "hash".
+func ExampleClient_ScanType_hashType() {
+	rdb.FlushDB(ctx)
+	for i := 0; i < 33; i++ {
+		err := rdb.HSet(context.TODO(), fmt.Sprintf("key%d", i), "value", "foo").Err()
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	var allKeys []string
+	var cursor uint64
+	var err error
+
+	for {
+		var keysFromScan []string
+		keysFromScan, cursor, err = rdb.ScanType(context.TODO(), cursor, "key*", 10, "hash").Result()
+		if err != nil {
+			panic(err)
+		}
+		allKeys = append(allKeys, keysFromScan...)
+		if cursor == 0 {
+			break
+		}
+	}
+	fmt.Printf("%d keys ready for use", len(allKeys))
+	// Output: 33 keys ready for use
+}
+
+// ExampleMapStringStringCmd_Scan shows how to scan the results of a map fetch
 // into a struct.
-func ExampleStringStringMapCmd_Scan() {
+func ExampleMapStringStringCmd_Scan() {
 	rdb.FlushDB(ctx)
 	err := rdb.HMSet(ctx, "map",
 		"name", "hello",
@@ -402,7 +433,7 @@ func ExampleClient_TxPipeline() {
 }
 
 func ExampleClient_Watch() {
-	const maxRetries = 1000
+	const maxRetries = 10000
 
 	// Increment transactionally increments key using GET and SET commands.
 	increment := func(key string) error {
@@ -615,7 +646,7 @@ func ExampleClient_SlowLogGet() {
 
 	old := rdb.ConfigGet(ctx, key).Val()
 	rdb.ConfigSet(ctx, key, "0")
-	defer rdb.ConfigSet(ctx, key, old[1].(string))
+	defer rdb.ConfigSet(ctx, key, old[key])
 
 	if err := rdb.Do(ctx, "slowlog", "reset").Err(); err != nil {
 		panic(err)

export_test.go

@@ -6,9 +6,9 @@ import (
 	"net"
 	"strings"
 
-	"github.com/go-redis/redis/v8/internal"
-	"github.com/go-redis/redis/v8/internal/hashtag"
-	"github.com/go-redis/redis/v8/internal/pool"
+	"github.com/go-redis/redis/v9/internal"
+	"github.com/go-redis/redis/v9/internal/hashtag"
+	"github.com/go-redis/redis/v9/internal/pool"
 )
 
 func (c *baseClient) Pool() pool.Pooler {
@@ -60,21 +60,21 @@ func (c *ClusterClient) SwapNodes(ctx context.Context, key string) error {
 	return nil
 }
 
-func (state *clusterState) IsConsistent(ctx context.Context) bool {
-	if len(state.Masters) < 3 {
+func (c *clusterState) IsConsistent(ctx context.Context) bool {
+	if len(c.Masters) < 3 {
 		return false
 	}
-	for _, master := range state.Masters {
+	for _, master := range c.Masters {
 		s := master.Client.Info(ctx, "replication").Val()
 		if !strings.Contains(s, "role:master") {
 			return false
 		}
 	}
 
-	if len(state.Slaves) < 3 {
+	if len(c.Slaves) < 3 {
 		return false
 	}
-	for _, slave := range state.Slaves {
+	for _, slave := range c.Slaves {
 		s := slave.Client.Info(ctx, "replication").Val()
 		if !strings.Contains(s, "role:slave") {
 			return false
@@ -85,11 +85,16 @@ func (state *clusterState) IsConsistent(ctx context.Context) bool {
 }
 
 func GetSlavesAddrByName(ctx context.Context, c *SentinelClient, name string) []string {
-	addrs, err := c.Slaves(ctx, name).Result()
+	addrs, err := c.Replicas(ctx, name).Result()
 	if err != nil {
-		internal.Logger.Printf(ctx, "sentinel: Slaves name=%q failed: %s",
+		internal.Logger.Printf(ctx, "sentinel: Replicas name=%q failed: %s",
 			name, err)
 		return []string{}
 	}
-	return parseSlaveAddrs(addrs, false)
+	return parseReplicaAddrs(addrs, false)
+}
+
+func (c *Ring) ShardByName(name string) *ringShard {
+	shard, _ := c.sharding.GetByName(name)
+	return shard
 }

extra/rediscensus/go.mod

@@ -1,14 +1,14 @@
-module github.com/go-redis/redis/extra/rediscensus/v8
+module github.com/go-redis/redis/extra/rediscensus/v9
 
 go 1.15
 
-replace github.com/go-redis/redis/v8 => ../..
+replace github.com/go-redis/redis/v9 => ../..
 
-replace github.com/go-redis/redis/extra/rediscmd/v8 => ../rediscmd
+replace github.com/go-redis/redis/extra/rediscmd/v9 => ../rediscmd
 
 require (
-	github.com/go-redis/redis/extra/rediscmd/v8 v8.11.3
-	github.com/go-redis/redis/v8 v8.11.3
+	github.com/go-redis/redis/extra/rediscmd/v9 v9.0.0-rc.2
+	github.com/go-redis/redis/v9 v9.0.0-rc.2
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	go.opencensus.io v0.23.0
 )

extra/rediscensus/go.sum

@@ -1,11 +1,15 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
-github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
@@ -16,6 +20,8 @@ github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
+github.com/go-logr/logr v1.2.3 h1:2DntVwHkVopvECVRSlL5PSo9eG+cAkDCuckLubN+rq0=
+github.com/go-logr/logr v1.2.3/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -42,39 +48,68 @@ github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
-github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
 github.com/nxadm/tail v1.4.8/go.mod h1:+ncqLTQzXmGhMZNUePPaPqPvBxHAIsmXswZKocGu+AU=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
-github.com/onsi/ginkgo v1.15.0/go.mod h1:hF8qUzuuC8DJGygJH3726JnCZX4MYbRB8yFfISqnKUg=
-github.com/onsi/ginkgo v1.16.4 h1:29JGrr5oVBm5ulCWet69zQkzWipVXIol6ygQUe/EzNc=
 github.com/onsi/ginkgo v1.16.4/go.mod h1:dX+/inL/fNMqNlz0e9LfyB9TswhZpCVdJM/Z6Vvnwo0=
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@@ -85,14 +120,22 @@ golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -100,17 +143,32 @@ golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7w
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 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
@@ -143,8 +203,9 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
@@ -153,8 +214,9 @@ gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWD
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

extra/rediscensus/rediscensus.go

@@ -3,9 +3,10 @@ package rediscensus
 import (
 	"context"
 
-	"github.com/go-redis/redis/extra/rediscmd/v8"
-	"github.com/go-redis/redis/v8"
 	"go.opencensus.io/trace"
+
+	"github.com/go-redis/redis/extra/rediscmd/v9"
+	"github.com/go-redis/redis/v9"
 )
 
 type TracingHook struct{}

extra/rediscmd/go.mod

@@ -1,11 +1,11 @@
-module github.com/go-redis/redis/extra/rediscmd/v8
+module github.com/go-redis/redis/extra/rediscmd/v9
 
 go 1.15
 
-replace github.com/go-redis/redis/v8 => ../..
+replace github.com/go-redis/redis/v9 => ../..
 
 require (
-	github.com/go-redis/redis/v8 v8.11.3
-	github.com/onsi/ginkgo v1.16.4
-	github.com/onsi/gomega v1.15.0
+	github.com/go-redis/redis/v9 v9.0.0-rc.2
+	github.com/onsi/ginkgo v1.16.5
+	github.com/onsi/gomega v1.24.1
 )

extra/rediscmd/go.sum

@@ -1,12 +1,18 @@
-github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
-github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
+github.com/go-logr/logr v1.2.3 h1:2DntVwHkVopvECVRSlL5PSo9eG+cAkDCuckLubN+rq0=
+github.com/go-logr/logr v1.2.3/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
@@ -22,62 +28,119 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
-github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
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+golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210423082822-04245dca01da h1:b3NXsE2LusjYGGjL5bxEVZZORm/YEFFrWFjR8eFrw/c=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220422013727-9388b58f7150/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.2.0 h1:ljd4t30dBnAvMZaQCevtY0xLLD0A+bRZXbgLMLU1F/A=
+golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.4.0 h1:BrVqGRd7+k1DiOgtnFvAkoQEWQvBc25ouMJM6429SFg=
+golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.1.10/go.mod h1:Uh6Zz+xoGYZom868N8YTex3t7RhtHDBrE8Gzo9bV56E=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.2.0/go.mod h1:y4OqIKeOV/fWJetJ8bXPU1sEVniLMIyDAZWeHdV+NTA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
@@ -86,8 +149,9 @@ google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miE
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
@@ -96,5 +160,7 @@ gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWD
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

extra/rediscmd/rediscmd.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-redis/redis/v8"
+	"github.com/go-redis/redis/v9"
 )
 
 func CmdString(cmd redis.Cmder) string {

extra/rediscmd/safe.go

@@ -1,3 +1,4 @@
+//go:build appengine
 // +build appengine
 
 package rediscmd

extra/rediscmd/unsafe.go

@@ -1,3 +1,4 @@
+//go:build !appengine
 // +build !appengine
 
 package rediscmd

extra/redisotel/README.md

@@ -3,7 +3,7 @@
 ## Installation
 
 ```bash
-go get github.com/go-redis/redis/extra/redisotel/v8
+go get github.com/go-redis/redis/extra/redisotel/v9
 ```
 
 ## Usage
@@ -12,8 +12,8 @@ Tracing is enabled by adding a hook:
 
 ```go
 import (
-    "github.com/go-redis/redis/v8"
-    "github.com/go-redis/redis/extra/redisotel"
+    "github.com/go-redis/redis/v9"
+    "github.com/go-redis/redis/extra/redisotel/v9"
 )
 
 rdb := rdb.NewClient(&rdb.Options{...})
@@ -21,4 +21,6 @@ rdb := rdb.NewClient(&rdb.Options{...})
 rdb.AddHook(redisotel.NewTracingHook())
 ```
 
-See [example](example) and [documentation](https://redis.uptrace.dev/tracing/) for more details.
+See [example](example) and
+[Monitoring Go Redis Performance and Errors](https://redis.uptrace.dev/guide/go-redis-monitoring.html)
+for details.

extra/redisotel/config.go

@@ -0,0 +1,139 @@
+package redisotel
+
+import (
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/metric/global"
+	semconv "go.opentelemetry.io/otel/semconv/v1.12.0"
+	"go.opentelemetry.io/otel/trace"
+)
+
+type config struct {
+	// Common options.
+
+	dbSystem string
+	attrs    []attribute.KeyValue
+
+	// Tracing options.
+
+	tp     trace.TracerProvider
+	tracer trace.Tracer
+
+	dbStmtEnabled bool
+
+	// Metrics options.
+
+	mp    metric.MeterProvider
+	meter metric.Meter
+
+	poolName string
+}
+
+type baseOption interface {
+	apply(conf *config)
+}
+
+type Option interface {
+	baseOption
+	tracing()
+	metrics()
+}
+
+type option func(conf *config)
+
+func (fn option) apply(conf *config) {
+	fn(conf)
+}
+
+func (fn option) tracing() {}
+
+func (fn option) metrics() {}
+
+func newConfig(opts ...baseOption) *config {
+	conf := &config{
+		dbSystem: "redis",
+		attrs:    []attribute.KeyValue{},
+
+		tp:            otel.GetTracerProvider(),
+		mp:            global.MeterProvider(),
+		dbStmtEnabled: true,
+	}
+
+	for _, opt := range opts {
+		opt.apply(conf)
+	}
+
+	conf.attrs = append(conf.attrs, semconv.DBSystemKey.String(conf.dbSystem))
+
+	return conf
+}
+
+func WithDBSystem(dbSystem string) Option {
+	return option(func(conf *config) {
+		conf.dbSystem = dbSystem
+	})
+}
+
+// WithAttributes specifies additional attributes to be added to the span.
+func WithAttributes(attrs ...attribute.KeyValue) Option {
+	return option(func(conf *config) {
+		conf.attrs = append(conf.attrs, attrs...)
+	})
+}
+
+//------------------------------------------------------------------------------
+
+type TracingOption interface {
+	baseOption
+	tracing()
+}
+
+type tracingOption func(conf *config)
+
+var _ TracingOption = (*tracingOption)(nil)
+
+func (fn tracingOption) apply(conf *config) {
+	fn(conf)
+}
+
+func (fn tracingOption) tracing() {}
+
+// WithTracerProvider specifies a tracer provider to use for creating a tracer.
+// If none is specified, the global provider is used.
+func WithTracerProvider(provider trace.TracerProvider) TracingOption {
+	return tracingOption(func(conf *config) {
+		conf.tp = provider
+	})
+}
+
+// WithDBStatement tells the tracing hook not to log raw redis commands.
+func WithDBStatement(on bool) TracingOption {
+	return tracingOption(func(conf *config) {
+		conf.dbStmtEnabled = on
+	})
+}
+
+//------------------------------------------------------------------------------
+
+type MetricsOption interface {
+	baseOption
+	metrics()
+}
+
+type metricsOption func(conf *config)
+
+var _ MetricsOption = (*metricsOption)(nil)
+
+func (fn metricsOption) apply(conf *config) {
+	fn(conf)
+}
+
+func (fn metricsOption) metrics() {}
+
+// WithMeterProvider configures a metric.Meter used to create instruments.
+func WithMeterProvider(mp metric.MeterProvider) MetricsOption {
+	return metricsOption(func(conf *config) {
+		conf.mp = mp
+	})
+}

extra/redisotel/go.mod

@@ -1,14 +1,16 @@
-module github.com/go-redis/redis/extra/redisotel/v8
+module github.com/go-redis/redis/extra/redisotel/v9
 
 go 1.15
 
-replace github.com/go-redis/redis/v8 => ../..
+replace github.com/go-redis/redis/v9 => ../..
 
-replace github.com/go-redis/redis/extra/rediscmd/v8 => ../rediscmd
+replace github.com/go-redis/redis/extra/rediscmd/v9 => ../rediscmd
 
 require (
-	github.com/go-redis/redis/extra/rediscmd/v8 v8.11.3
-	github.com/go-redis/redis/v8 v8.11.3
-	go.opentelemetry.io/otel v1.0.0-RC2
-	go.opentelemetry.io/otel/trace v1.0.0-RC2
+	github.com/go-redis/redis/extra/rediscmd/v9 v9.0.0-rc.2
+	github.com/go-redis/redis/v9 v9.0.0-rc.2
+	go.opentelemetry.io/otel v1.11.1
+	go.opentelemetry.io/otel/metric v0.33.0
+	go.opentelemetry.io/otel/sdk v1.9.0
+	go.opentelemetry.io/otel/trace v1.11.1
 )

extra/redisotel/go.sum

@@ -1,5 +1,8 @@
-github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
-github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -8,6 +11,11 @@ github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cu
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
+github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.2.3 h1:2DntVwHkVopvECVRSlL5PSo9eG+cAkDCuckLubN+rq0=
+github.com/go-logr/logr v1.2.3/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
+github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
 github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
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+golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.4.0 h1:BrVqGRd7+k1DiOgtnFvAkoQEWQvBc25ouMJM6429SFg=
+golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.1.10/go.mod h1:Uh6Zz+xoGYZom868N8YTex3t7RhtHDBrE8Gzo9bV56E=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.2.0/go.mod h1:y4OqIKeOV/fWJetJ8bXPU1sEVniLMIyDAZWeHdV+NTA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
@@ -94,8 +163,9 @@ google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miE
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
@@ -104,7 +174,7 @@ gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWD
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

extra/redisotel/metrics.go

@@ -0,0 +1,254 @@
+package redisotel
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"time"
+
+	"github.com/go-redis/redis/v9"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/metric/instrument"
+	"go.opentelemetry.io/otel/metric/instrument/syncfloat64"
+)
+
+// InstrumentMetrics starts reporting OpenTelemetry Metrics.
+//
+// Based on https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/semantic_conventions/database-metrics.md
+func InstrumentMetrics(rdb redis.UniversalClient, opts ...MetricsOption) error {
+	baseOpts := make([]baseOption, len(opts))
+	for i, opt := range opts {
+		baseOpts[i] = opt
+	}
+	conf := newConfig(baseOpts...)
+
+	if conf.meter == nil {
+		conf.meter = conf.mp.Meter(
+			instrumName,
+			metric.WithInstrumentationVersion("semver:"+redis.Version()),
+		)
+	}
+
+	switch rdb := rdb.(type) {
+	case *redis.Client:
+		if conf.poolName == "" {
+			opt := rdb.Options()
+			conf.poolName = opt.Addr
+		}
+		conf.attrs = append(conf.attrs, attribute.String("pool.name", conf.poolName))
+
+		if err := reportPoolStats(rdb, conf); err != nil {
+			return err
+		}
+		if err := addMetricsHook(rdb, conf); err != nil {
+			return err
+		}
+		return nil
+	case *redis.ClusterClient:
+		rdb.OnNewNode(func(rdb *redis.Client) {
+			if conf.poolName == "" {
+				opt := rdb.Options()
+				conf.poolName = opt.Addr
+			}
+			conf.attrs = append(conf.attrs, attribute.String("pool.name", conf.poolName))
+
+			if err := reportPoolStats(rdb, conf); err != nil {
+				otel.Handle(err)
+			}
+			if err := addMetricsHook(rdb, conf); err != nil {
+				otel.Handle(err)
+			}
+		})
+		return nil
+	case *redis.Ring:
+		rdb.OnNewNode(func(rdb *redis.Client) {
+			if conf.poolName == "" {
+				opt := rdb.Options()
+				conf.poolName = opt.Addr
+			}
+			conf.attrs = append(conf.attrs, attribute.String("pool.name", conf.poolName))
+
+			if err := reportPoolStats(rdb, conf); err != nil {
+				otel.Handle(err)
+			}
+			if err := addMetricsHook(rdb, conf); err != nil {
+				otel.Handle(err)
+			}
+		})
+		return nil
+	default:
+		return fmt.Errorf("redisotel: %T not supported", rdb)
+	}
+}
+
+func reportPoolStats(rdb *redis.Client, conf *config) error {
+	labels := conf.attrs
+	idleAttrs := append(labels, attribute.String("state", "idle"))
+	usedAttrs := append(labels, attribute.String("state", "used"))
+
+	idleMax, err := conf.meter.AsyncInt64().UpDownCounter(
+		"db.client.connections.idle.max",
+		instrument.WithDescription("The maximum number of idle open connections allowed"),
+	)
+	if err != nil {
+		return err
+	}
+
+	idleMin, err := conf.meter.AsyncInt64().UpDownCounter(
+		"db.client.connections.idle.min",
+		instrument.WithDescription("The minimum number of idle open connections allowed"),
+	)
+	if err != nil {
+		return err
+	}
+
+	connsMax, err := conf.meter.AsyncInt64().UpDownCounter(
+		"db.client.connections.max",
+		instrument.WithDescription("The maximum number of open connections allowed"),
+	)
+	if err != nil {
+		return err
+	}
+
+	usage, err := conf.meter.AsyncInt64().UpDownCounter(
+		"db.client.connections.usage",
+		instrument.WithDescription("The number of connections that are currently in state described by the state attribute"),
+	)
+	if err != nil {
+		return err
+	}
+
+	timeouts, err := conf.meter.AsyncInt64().UpDownCounter(
+		"db.client.connections.timeouts",
+		instrument.WithDescription("The number of connection timeouts that have occurred trying to obtain a connection from the pool"),
+	)
+	if err != nil {
+		return err
+	}
+
+	redisConf := rdb.Options()
+	return conf.meter.RegisterCallback(
+		[]instrument.Asynchronous{
+			idleMax,
+			idleMin,
+			connsMax,
+			usage,
+			timeouts,
+		},
+		func(ctx context.Context) {
+			stats := rdb.PoolStats()
+
+			idleMax.Observe(ctx, int64(redisConf.MaxIdleConns), labels...)
+			idleMin.Observe(ctx, int64(redisConf.MinIdleConns), labels...)
+			connsMax.Observe(ctx, int64(redisConf.PoolSize), labels...)
+
+			usage.Observe(ctx, int64(stats.IdleConns), idleAttrs...)
+			usage.Observe(ctx, int64(stats.TotalConns-stats.IdleConns), usedAttrs...)
+
+			timeouts.Observe(ctx, int64(stats.Timeouts), labels...)
+		},
+	)
+}
+
+func addMetricsHook(rdb *redis.Client, conf *config) error {
+	createTime, err := conf.meter.SyncFloat64().Histogram(
+		"db.client.connections.create_time",
+		instrument.WithDescription("The time it took to create a new connection."),
+		instrument.WithUnit("ms"),
+	)
+	if err != nil {
+		return err
+	}
+
+	useTime, err := conf.meter.SyncFloat64().Histogram(
+		"db.client.connections.use_time",
+		instrument.WithDescription("The time between borrowing a connection and returning it to the pool."),
+		instrument.WithUnit("ms"),
+	)
+	if err != nil {
+		return err
+	}
+
+	rdb.AddHook(&metricsHook{
+		createTime: createTime,
+		useTime:    useTime,
+		attrs:      conf.attrs,
+	})
+	return nil
+}
+
+type metricsHook struct {
+	createTime syncfloat64.Histogram
+	useTime    syncfloat64.Histogram
+	attrs      []attribute.KeyValue
+}
+
+var _ redis.Hook = (*metricsHook)(nil)
+
+func (mh *metricsHook) DialHook(hook redis.DialHook) redis.DialHook {
+	return func(ctx context.Context, network, addr string) (net.Conn, error) {
+		start := time.Now()
+
+		conn, err := hook(ctx, network, addr)
+
+		attrs := make([]attribute.KeyValue, 0, len(mh.attrs)+1)
+		attrs = append(attrs, mh.attrs...)
+		attrs = append(attrs, statusAttr(err))
+
+		mh.createTime.Record(ctx, milliseconds(time.Since(start)), attrs...)
+		return conn, err
+	}
+}
+
+func (mh *metricsHook) ProcessHook(hook redis.ProcessHook) redis.ProcessHook {
+	return func(ctx context.Context, cmd redis.Cmder) error {
+		start := time.Now()
+
+		err := hook(ctx, cmd)
+
+		dur := time.Since(start)
+
+		attrs := make([]attribute.KeyValue, 0, len(mh.attrs)+2)
+		attrs = append(attrs, mh.attrs...)
+		attrs = append(attrs, attribute.String("type", "command"))
+		attrs = append(attrs, statusAttr(err))
+
+		mh.useTime.Record(ctx, milliseconds(dur), attrs...)
+
+		return err
+	}
+}
+
+func (mh *metricsHook) ProcessPipelineHook(
+	hook redis.ProcessPipelineHook,
+) redis.ProcessPipelineHook {
+	return func(ctx context.Context, cmds []redis.Cmder) error {
+		start := time.Now()
+
+		err := hook(ctx, cmds)
+
+		dur := time.Since(start)
+
+		attrs := make([]attribute.KeyValue, 0, len(mh.attrs)+2)
+		attrs = append(attrs, mh.attrs...)
+		attrs = append(attrs, attribute.String("type", "pipeline"))
+		attrs = append(attrs, statusAttr(err))
+
+		mh.useTime.Record(ctx, milliseconds(dur), attrs...)
+
+		return err
+	}
+}
+
+func milliseconds(d time.Duration) float64 {
+	return float64(d) / float64(time.Millisecond)
+}
+
+func statusAttr(err error) attribute.KeyValue {
+	if err != nil {
+		return attribute.String("status", "error")
+	}
+	return attribute.String("status", "ok")
+}

extra/redisotel/redisotel.go

@@ -1,78 +0,0 @@
-package redisotel
-
-import (
-	"context"
-
-	"github.com/go-redis/redis/extra/rediscmd/v8"
-	"github.com/go-redis/redis/v8"
-	"go.opentelemetry.io/otel"
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/codes"
-	"go.opentelemetry.io/otel/trace"
-)
-
-var tracer = otel.Tracer("github.com/go-redis/redis")
-
-type TracingHook struct{}
-
-var _ redis.Hook = (*TracingHook)(nil)
-
-func NewTracingHook() *TracingHook {
-	return new(TracingHook)
-}
-
-func (TracingHook) BeforeProcess(ctx context.Context, cmd redis.Cmder) (context.Context, error) {
-	if !trace.SpanFromContext(ctx).IsRecording() {
-		return ctx, nil
-	}
-
-	ctx, span := tracer.Start(ctx, cmd.FullName())
-	span.SetAttributes(
-		attribute.String("db.system", "redis"),
-		attribute.String("db.statement", rediscmd.CmdString(cmd)),
-	)
-
-	return ctx, nil
-}
-
-func (TracingHook) AfterProcess(ctx context.Context, cmd redis.Cmder) error {
-	span := trace.SpanFromContext(ctx)
-	if err := cmd.Err(); err != nil {
-		recordError(ctx, span, err)
-	}
-	span.End()
-	return nil
-}
-
-func (TracingHook) BeforeProcessPipeline(ctx context.Context, cmds []redis.Cmder) (context.Context, error) {
-	if !trace.SpanFromContext(ctx).IsRecording() {
-		return ctx, nil
-	}
-
-	summary, cmdsString := rediscmd.CmdsString(cmds)
-
-	ctx, span := tracer.Start(ctx, "pipeline "+summary)
-	span.SetAttributes(
-		attribute.String("db.system", "redis"),
-		attribute.Int("db.redis.num_cmd", len(cmds)),
-		attribute.String("db.statement", cmdsString),
-	)
-
-	return ctx, nil
-}
-
-func (TracingHook) AfterProcessPipeline(ctx context.Context, cmds []redis.Cmder) error {
-	span := trace.SpanFromContext(ctx)
-	if err := cmds[0].Err(); err != nil {
-		recordError(ctx, span, err)
-	}
-	span.End()
-	return nil
-}
-
-func recordError(ctx context.Context, span trace.Span, err error) {
-	if err != redis.Nil {
-		span.RecordError(err)
-		span.SetStatus(codes.Error, err.Error())
-	}
-}

extra/redisotel/redisotel_test.go

@@ -0,0 +1,87 @@
+package redisotel
+
+import (
+	"context"
+	"testing"
+
+	semconv "go.opentelemetry.io/otel/semconv/v1.7.0"
+
+	"go.opentelemetry.io/otel"
+	sdktrace "go.opentelemetry.io/otel/sdk/trace"
+	"go.opentelemetry.io/otel/trace"
+
+	"github.com/go-redis/redis/v9"
+)
+
+type providerFunc func(name string, opts ...trace.TracerOption) trace.Tracer
+
+func (fn providerFunc) Tracer(name string, opts ...trace.TracerOption) trace.Tracer {
+	return fn(name, opts...)
+}
+
+func TestNewWithTracerProvider(t *testing.T) {
+	invoked := false
+
+	tp := providerFunc(func(name string, opts ...trace.TracerOption) trace.Tracer {
+		invoked = true
+		return otel.GetTracerProvider().Tracer(name, opts...)
+	})
+
+	_ = newTracingHook("", WithTracerProvider(tp))
+
+	if !invoked {
+		t.Fatalf("did not call custom TraceProvider")
+	}
+}
+
+func TestNewWithAttributes(t *testing.T) {
+	provider := sdktrace.NewTracerProvider()
+	hook := newTracingHook("", WithTracerProvider(provider), WithAttributes(semconv.NetPeerNameKey.String("localhost")))
+	ctx, span := provider.Tracer("redis-test").Start(context.TODO(), "redis-test")
+	cmd := redis.NewCmd(ctx, "ping")
+	defer span.End()
+
+	processHook := hook.ProcessHook(func(ctx context.Context, cmd redis.Cmder) error {
+		attrs := trace.SpanFromContext(ctx).(sdktrace.ReadOnlySpan).Attributes()
+		if !(attrs[0] == semconv.DBSystemRedis) {
+			t.Fatalf("expected attrs[0] to be semconv.DBSystemRedis, got: %v", attrs[0])
+		}
+		if !(attrs[1] == semconv.NetPeerNameKey.String("localhost")) {
+			t.Fatalf("expected attrs[1] to be semconv.NetPeerNameKey.String(\"localhost\"), got: %v", attrs[1])
+		}
+		if !(attrs[2] == semconv.DBStatementKey.String("ping")) {
+			t.Fatalf("expected attrs[2] to be semconv.DBStatementKey.String(\"ping\"), got: %v", attrs[2])
+		}
+		return nil
+	})
+	err := processHook(ctx, cmd)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestWithDBStatement(t *testing.T) {
+	provider := sdktrace.NewTracerProvider()
+	hook := newTracingHook(
+		"",
+		WithTracerProvider(provider),
+		WithDBStatement(false),
+	)
+	ctx, span := provider.Tracer("redis-test").Start(context.TODO(), "redis-test")
+	cmd := redis.NewCmd(ctx, "ping")
+	defer span.End()
+
+	processHook := hook.ProcessHook(func(ctx context.Context, cmd redis.Cmder) error {
+		attrs := trace.SpanFromContext(ctx).(sdktrace.ReadOnlySpan).Attributes()
+		for _, attr := range attrs {
+			if attr.Key == semconv.DBStatementKey {
+				t.Fatal("Attribute with db statement should not exist")
+			}
+		}
+		return nil
+	})
+	err := processHook(ctx, cmd)
+	if err != nil {
+		t.Fatal(err)
+	}
+}

extra/redisotel/tracing.go

@@ -0,0 +1,215 @@
+package redisotel
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"runtime"
+	"strings"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	semconv "go.opentelemetry.io/otel/semconv/v1.10.0"
+	"go.opentelemetry.io/otel/trace"
+
+	"github.com/go-redis/redis/extra/rediscmd/v9"
+	"github.com/go-redis/redis/v9"
+)
+
+const (
+	instrumName = "github.com/go-redis/redis/extra/redisotel"
+)
+
+func InstrumentTracing(rdb redis.UniversalClient, opts ...TracingOption) error {
+	switch rdb := rdb.(type) {
+	case *redis.Client:
+		opt := rdb.Options()
+		connString := formatDBConnString(opt.Network, opt.Addr)
+		rdb.AddHook(newTracingHook(connString, opts...))
+		return nil
+	case *redis.ClusterClient:
+		rdb.AddHook(newTracingHook("", opts...))
+
+		rdb.OnNewNode(func(rdb *redis.Client) {
+			opt := rdb.Options()
+			connString := formatDBConnString(opt.Network, opt.Addr)
+			rdb.AddHook(newTracingHook(connString, opts...))
+		})
+		return nil
+	case *redis.Ring:
+		rdb.AddHook(newTracingHook("", opts...))
+
+		rdb.OnNewNode(func(rdb *redis.Client) {
+			opt := rdb.Options()
+			connString := formatDBConnString(opt.Network, opt.Addr)
+			rdb.AddHook(newTracingHook(connString, opts...))
+		})
+		return nil
+	default:
+		return fmt.Errorf("redisotel: %T not supported", rdb)
+	}
+}
+
+type tracingHook struct {
+	conf *config
+
+	spanOpts []trace.SpanStartOption
+}
+
+var _ redis.Hook = (*tracingHook)(nil)
+
+func newTracingHook(connString string, opts ...TracingOption) *tracingHook {
+	baseOpts := make([]baseOption, len(opts))
+	for i, opt := range opts {
+		baseOpts[i] = opt
+	}
+	conf := newConfig(baseOpts...)
+
+	if conf.tracer == nil {
+		conf.tracer = conf.tp.Tracer(
+			instrumName,
+			trace.WithInstrumentationVersion("semver:"+redis.Version()),
+		)
+	}
+	if connString != "" {
+		conf.attrs = append(conf.attrs, semconv.DBConnectionStringKey.String(connString))
+	}
+
+	return &tracingHook{
+		conf: conf,
+
+		spanOpts: []trace.SpanStartOption{
+			trace.WithSpanKind(trace.SpanKindClient),
+			trace.WithAttributes(conf.attrs...),
+		},
+	}
+}
+
+func (th *tracingHook) DialHook(hook redis.DialHook) redis.DialHook {
+	return func(ctx context.Context, network, addr string) (net.Conn, error) {
+		if !trace.SpanFromContext(ctx).IsRecording() {
+			return hook(ctx, network, addr)
+		}
+
+		ctx, span := th.conf.tracer.Start(ctx, "redis.dial", th.spanOpts...)
+		defer span.End()
+
+		conn, err := hook(ctx, network, addr)
+		if err != nil {
+			recordError(span, err)
+			return nil, err
+		}
+		return conn, nil
+	}
+}
+
+func (th *tracingHook) ProcessHook(hook redis.ProcessHook) redis.ProcessHook {
+	return func(ctx context.Context, cmd redis.Cmder) error {
+		if !trace.SpanFromContext(ctx).IsRecording() {
+			return hook(ctx, cmd)
+		}
+
+		fn, file, line := funcFileLine("github.com/go-redis/redis")
+
+		attrs := make([]attribute.KeyValue, 0, 8)
+		attrs = append(attrs,
+			semconv.CodeFunctionKey.String(fn),
+			semconv.CodeFilepathKey.String(file),
+			semconv.CodeLineNumberKey.Int(line),
+		)
+
+		if th.conf.dbStmtEnabled {
+			cmdString := rediscmd.CmdString(cmd)
+			attrs = append(attrs, semconv.DBStatementKey.String(cmdString))
+		}
+
+		opts := th.spanOpts
+		opts = append(opts, trace.WithAttributes(attrs...))
+
+		ctx, span := th.conf.tracer.Start(ctx, cmd.FullName(), opts...)
+		defer span.End()
+
+		if err := hook(ctx, cmd); err != nil {
+			recordError(span, err)
+			return err
+		}
+		return nil
+	}
+}
+
+func (th *tracingHook) ProcessPipelineHook(
+	hook redis.ProcessPipelineHook,
+) redis.ProcessPipelineHook {
+	return func(ctx context.Context, cmds []redis.Cmder) error {
+		if !trace.SpanFromContext(ctx).IsRecording() {
+			return hook(ctx, cmds)
+		}
+
+		fn, file, line := funcFileLine("github.com/go-redis/redis")
+
+		attrs := make([]attribute.KeyValue, 0, 8)
+		attrs = append(attrs,
+			semconv.CodeFunctionKey.String(fn),
+			semconv.CodeFilepathKey.String(file),
+			semconv.CodeLineNumberKey.Int(line),
+			attribute.Int("db.redis.num_cmd", len(cmds)),
+		)
+
+		summary, cmdsString := rediscmd.CmdsString(cmds)
+		if th.conf.dbStmtEnabled {
+			attrs = append(attrs, semconv.DBStatementKey.String(cmdsString))
+		}
+
+		opts := th.spanOpts
+		opts = append(opts, trace.WithAttributes(attrs...))
+
+		ctx, span := th.conf.tracer.Start(ctx, "redis.pipeline "+summary, opts...)
+		defer span.End()
+
+		if err := hook(ctx, cmds); err != nil {
+			recordError(span, err)
+			return err
+		}
+		return nil
+	}
+}
+
+func recordError(span trace.Span, err error) {
+	if err != redis.Nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, err.Error())
+	}
+}
+
+func formatDBConnString(network, addr string) string {
+	if network == "tcp" {
+		network = "redis"
+	}
+	return fmt.Sprintf("%s://%s", network, addr)
+}
+
+func funcFileLine(pkg string) (string, string, int) {
+	const depth = 16
+	var pcs [depth]uintptr
+	n := runtime.Callers(3, pcs[:])
+	ff := runtime.CallersFrames(pcs[:n])
+
+	var fn, file string
+	var line int
+	for {
+		f, ok := ff.Next()
+		if !ok {
+			break
+		}
+		fn, file, line = f.Function, f.File, f.Line
+		if !strings.Contains(fn, pkg) {
+			break
+		}
+	}
+
+	if ind := strings.LastIndexByte(fn, '/'); ind != -1 {
+		fn = fn[ind+1:]
+	}
+
+	return fn, file, line
+}

extra/redisprometheus/README.md

@@ -0,0 +1,26 @@
+# Prometheus Metric Collector
+
+This package implements a [`prometheus.Collector`](https://pkg.go.dev/github.com/prometheus/client_golang@v1.12.2/prometheus#Collector)
+for collecting metrics about the connection pool used by the various redis clients.
+Supported clients are `redis.Client`, `redis.ClusterClient`, `redis.Ring` and `redis.UniversalClient`.
+
+### Example
+
+```go
+client := redis.NewClient(options)
+collector := redisprometheus.NewCollector(namespace, subsystem, client)
+prometheus.MustRegister(collector)
+```
+
+### Metrics
+
+| Name                      | Type           | Description                                                                 |
+|---------------------------|----------------|-----------------------------------------------------------------------------|
+| `pool_hit_total`          | Counter metric | number of times a connection was found in the pool                          |
+| `pool_miss_total`         | Counter metric | number of times a connection was not found in the pool                      |
+| `pool_timeout_total`      | Counter metric | number of times a timeout occurred when getting a connection from the pool  |
+| `pool_conn_total_current` | Gauge metric   | current number of connections in the pool                                   |
+| `pool_conn_idle_current`  | Gauge metric   | current number of idle connections in the pool                              |
+| `pool_conn_stale_total`   | Counter metric | number of times a connection was removed from the pool because it was stale |
+
+

extra/redisprometheus/collector.go

@@ -0,0 +1,117 @@
+package redisprometheus
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+
+	"github.com/go-redis/redis/v9"
+)
+
+// StatGetter provides a method to get pool statistics.
+type StatGetter interface {
+	PoolStats() *redis.PoolStats
+}
+
+// Collector collects statistics from a redis client.
+// It implements the prometheus.Collector interface.
+type Collector struct {
+	getter      StatGetter
+	hitDesc     *prometheus.Desc
+	missDesc    *prometheus.Desc
+	timeoutDesc *prometheus.Desc
+	totalDesc   *prometheus.Desc
+	idleDesc    *prometheus.Desc
+	staleDesc   *prometheus.Desc
+}
+
+var _ prometheus.Collector = (*Collector)(nil)
+
+// NewCollector returns a new Collector based on the provided StatGetter.
+// The given namespace and subsystem are used to build the fully qualified metric name,
+// i.e. "{namespace}_{subsystem}_{metric}".
+// The provided metrics are:
+//   * pool_hit_total
+//   * pool_miss_total
+//   * pool_timeout_total
+//   * pool_conn_total_current
+//   * pool_conn_idle_current
+//   * pool_conn_stale_total
+func NewCollector(namespace, subsystem string, getter StatGetter) *Collector {
+	return &Collector{
+		getter: getter,
+		hitDesc: prometheus.NewDesc(
+			prometheus.BuildFQName(namespace, subsystem, "pool_hit_total"),
+			"Number of times a connection was found in the pool",
+			nil, nil,
+		),
+		missDesc: prometheus.NewDesc(
+			prometheus.BuildFQName(namespace, subsystem, "pool_miss_total"),
+			"Number of times a connection was not found in the pool",
+			nil, nil,
+		),
+		timeoutDesc: prometheus.NewDesc(
+			prometheus.BuildFQName(namespace, subsystem, "pool_timeout_total"),
+			"Number of times a timeout occurred when looking for a connection in the pool",
+			nil, nil,
+		),
+		totalDesc: prometheus.NewDesc(
+			prometheus.BuildFQName(namespace, subsystem, "pool_conn_total_current"),
+			"Current number of connections in the pool",
+			nil, nil,
+		),
+		idleDesc: prometheus.NewDesc(
+			prometheus.BuildFQName(namespace, subsystem, "pool_conn_idle_current"),
+			"Current number of idle connections in the pool",
+			nil, nil,
+		),
+		staleDesc: prometheus.NewDesc(
+			prometheus.BuildFQName(namespace, subsystem, "pool_conn_stale_total"),
+			"Number of times a connection was removed from the pool because it was stale",
+			nil, nil,
+		),
+	}
+}
+
+// Describe implements the prometheus.Collector interface.
+func (s *Collector) Describe(descs chan<- *prometheus.Desc) {
+	descs <- s.hitDesc
+	descs <- s.missDesc
+	descs <- s.timeoutDesc
+	descs <- s.totalDesc
+	descs <- s.idleDesc
+	descs <- s.staleDesc
+}
+
+// Collect implements the prometheus.Collector interface.
+func (s *Collector) Collect(metrics chan<- prometheus.Metric) {
+	stats := s.getter.PoolStats()
+	metrics <- prometheus.MustNewConstMetric(
+		s.hitDesc,
+		prometheus.CounterValue,
+		float64(stats.Hits),
+	)
+	metrics <- prometheus.MustNewConstMetric(
+		s.missDesc,
+		prometheus.CounterValue,
+		float64(stats.Misses),
+	)
+	metrics <- prometheus.MustNewConstMetric(
+		s.timeoutDesc,
+		prometheus.CounterValue,
+		float64(stats.Timeouts),
+	)
+	metrics <- prometheus.MustNewConstMetric(
+		s.totalDesc,
+		prometheus.GaugeValue,
+		float64(stats.TotalConns),
+	)
+	metrics <- prometheus.MustNewConstMetric(
+		s.idleDesc,
+		prometheus.GaugeValue,
+		float64(stats.IdleConns),
+	)
+	metrics <- prometheus.MustNewConstMetric(
+		s.staleDesc,
+		prometheus.CounterValue,
+		float64(stats.StaleConns),
+	)
+}

extra/redisprometheus/go.mod

@@ -0,0 +1,23 @@
+module github.com/go-redis/redis/extra/redisprometheus/v9
+
+go 1.17
+
+replace github.com/go-redis/redis/v9 => ../..
+
+require (
+	github.com/go-redis/redis/v9 v9.0.0-rc.2
+	github.com/prometheus/client_golang v1.12.2
+)
+
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.32.1 // indirect
+	github.com/prometheus/procfs v0.7.3 // indirect
+	golang.org/x/sys v0.2.0 // indirect
+	google.golang.org/protobuf v1.26.0 // indirect
+)

extra/redisprometheus/go.sum

@@ -0,0 +1,476 @@
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+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
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+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
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+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
+rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

fuzz/fuzz.go

@@ -1,11 +1,13 @@
+//go:build gofuzz
 // +build gofuzz
 
 package fuzz
 
 import (
 	"context"
-	"github.com/go-redis/redis/v8"
 	"time"
+
+	"github.com/go-redis/redis/v9"
 )
 
 var (

go.mod

@@ -1,11 +1,24 @@
-module github.com/go-redis/redis/v8
+module github.com/go-redis/redis/v9
 
-go 1.13
+go 1.17
 
 require (
-	github.com/cespare/xxhash/v2 v2.1.1
+	github.com/cespare/xxhash/v2 v2.2.0
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f
-	github.com/google/go-cmp v0.5.6 // indirect
-	github.com/onsi/ginkgo v1.16.4
-	github.com/onsi/gomega v1.15.0
+	github.com/onsi/ginkgo v1.16.5
+	github.com/onsi/gomega v1.24.2
+	github.com/stretchr/testify v1.8.1
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
+	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/nxadm/tail v1.4.8 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	golang.org/x/net v0.4.0 // indirect
+	golang.org/x/sys v0.3.0 // indirect
+	golang.org/x/text v0.5.0 // indirect
+	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,12 +1,18 @@
-github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
-github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
+github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
+github.com/go-logr/logr v1.2.3 h1:2DntVwHkVopvECVRSlL5PSo9eG+cAkDCuckLubN+rq0=
+github.com/go-logr/logr v1.2.3/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
@@ -22,62 +28,129 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
-github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
 github.com/nxadm/tail v1.4.8/go.mod h1:+ncqLTQzXmGhMZNUePPaPqPvBxHAIsmXswZKocGu+AU=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
-github.com/onsi/ginkgo v1.16.4 h1:29JGrr5oVBm5ulCWet69zQkzWipVXIol6ygQUe/EzNc=
 github.com/onsi/ginkgo v1.16.4/go.mod h1:dX+/inL/fNMqNlz0e9LfyB9TswhZpCVdJM/Z6Vvnwo0=
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 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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 golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
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 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210423082822-04245dca01da h1:b3NXsE2LusjYGGjL5bxEVZZORm/YEFFrWFjR8eFrw/c=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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+golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
+golang.org/x/term v0.3.0/go.mod h1:q750SLmJuPmVoN1blW3UFBPREJfb1KmY3vwxfr+nFDA=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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+golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.1.10/go.mod h1:Uh6Zz+xoGYZom868N8YTex3t7RhtHDBrE8Gzo9bV56E=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.2.0/go.mod h1:y4OqIKeOV/fWJetJ8bXPU1sEVniLMIyDAZWeHdV+NTA=
+golang.org/x/tools v0.4.0/go.mod h1:UE5sM2OK9E/d67R0ANs2xJizIymRP5gJU295PvKXxjQ=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
@@ -86,8 +159,9 @@ google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miE
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
@@ -96,5 +170,7 @@ gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWD
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/arg.go

@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"strconv"
 	"time"
+
+	"github.com/go-redis/redis/v9/internal/util"
 )
 
 func AppendArg(b []byte, v interface{}) []byte {
@@ -11,7 +13,7 @@ func AppendArg(b []byte, v interface{}) []byte {
 	case nil:
 		return append(b, "<nil>"...)
 	case string:
-		return appendUTF8String(b, Bytes(v))
+		return appendUTF8String(b, util.StringToBytes(v))
 	case []byte:
 		return appendUTF8String(b, v)
 	case int:

internal/customvet/.gitignore

@@ -0,0 +1 @@
+/customvet

internal/customvet/checks/setval/setval.go

@@ -0,0 +1,61 @@
+package setval
+
+import (
+	"go/ast"
+	"go/token"
+	"go/types"
+	"golang.org/x/tools/go/analysis"
+)
+
+var Analyzer = &analysis.Analyzer{
+	Name: "setval",
+	Doc:  "find Cmder types that are missing a SetVal method",
+
+	Run: func(pass *analysis.Pass) (interface{}, error) {
+		cmderTypes := make(map[string]token.Pos)
+		typesWithSetValMethod := make(map[string]bool)
+
+		for _, file := range pass.Files {
+			for _, decl := range file.Decls {
+				funcName, receiverType := parseFuncDecl(decl, pass.TypesInfo)
+
+				switch funcName {
+				case "Result":
+					cmderTypes[receiverType] = decl.Pos()
+				case "SetVal":
+					typesWithSetValMethod[receiverType] = true
+				}
+			}
+		}
+
+		for cmder, pos := range cmderTypes {
+			if !typesWithSetValMethod[cmder] {
+				pass.Reportf(pos, "%s is missing a SetVal method", cmder)
+			}
+		}
+
+		return nil, nil
+	},
+}
+
+func parseFuncDecl(decl ast.Decl, typesInfo *types.Info) (funcName, receiverType string) {
+	funcDecl, ok := decl.(*ast.FuncDecl)
+	if !ok {
+		return "", "" // Not a function declaration.
+	}
+
+	if funcDecl.Recv == nil {
+		return "", "" // Not a method.
+	}
+
+	if len(funcDecl.Recv.List) != 1 {
+		return "", "" // Unexpected number of receiver arguments. (Can this happen?)
+	}
+
+	receiverTypeObj := typesInfo.TypeOf(funcDecl.Recv.List[0].Type)
+	if receiverTypeObj == nil {
+		return "", "" // Unable to determine the receiver type.
+	}
+
+	return funcDecl.Name.Name, receiverTypeObj.String()
+}

internal/customvet/checks/setval/setval_test.go

@@ -0,0 +1,12 @@
+package setval_test
+
+import (
+	"github.com/go-redis/redis/internal/customvet/checks/setval"
+	"golang.org/x/tools/go/analysis/analysistest"
+	"testing"
+)
+
+func Test(t *testing.T) {
+	testdata := analysistest.TestData()
+	analysistest.Run(t, testdata, setval.Analyzer, "a")
+}

internal/customvet/checks/setval/testdata/src/a/a.go

@@ -0,0 +1,29 @@
+package a
+
+type GoodCmd struct {
+	val int
+}
+
+func (c *GoodCmd) SetVal(val int) {
+	c.val = val
+}
+
+func (c *GoodCmd) Result() (int, error) {
+	return c.val, nil
+}
+
+type BadCmd struct {
+	val int
+}
+
+func (c *BadCmd) Result() (int, error) { // want "\\*a.BadCmd is missing a SetVal method"
+	return c.val, nil
+}
+
+type NotACmd struct {
+	val int
+}
+
+func (c *NotACmd) Val() int {
+	return c.val
+}

internal/customvet/go.mod

@@ -0,0 +1,10 @@
+module github.com/go-redis/redis/internal/customvet
+
+go 1.17
+
+require golang.org/x/tools v0.1.12
+
+require (
+	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
+	golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f // indirect
+)

internal/customvet/go.sum

@@ -0,0 +1,6 @@
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f h1:v4INt8xihDGvnrfjMDVXGxw9wrfxYyCjk0KbXjhR55s=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/tools v0.1.12 h1:VveCTK38A2rkS8ZqFY25HIDFscX5X9OoEhJd3quQmXU=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=

internal/customvet/main.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+	"github.com/go-redis/redis/internal/customvet/checks/setval"
+	"golang.org/x/tools/go/analysis/multichecker"
+)
+
+func main() {
+	multichecker.Main(
+		setval.Analyzer,
+	)
+}

internal/hashtag/hashtag.go

@@ -3,7 +3,7 @@ package hashtag
 import (
 	"strings"
 
-	"github.com/go-redis/redis/v8/internal/rand"
+	"github.com/go-redis/redis/v9/internal/rand"
 )
 
 const slotNumber = 16384

internal/hashtag/hashtag_test.go

@@ -3,10 +3,10 @@ package hashtag
 import (
 	"testing"
 
-	"github.com/go-redis/redis/v8/internal/rand"
-
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+
+	"github.com/go-redis/redis/v9/internal/rand"
 )
 
 func TestGinkgoSuite(t *testing.T) {

internal/hscan/hscan.go

@@ -10,6 +10,12 @@ import (
 // decoderFunc represents decoding functions for default built-in types.
 type decoderFunc func(reflect.Value, string) error
 
+// Scanner is the interface implemented by themselves,
+// which will override the decoding behavior of decoderFunc.
+type Scanner interface {
+	ScanRedis(s string) error
+}
+
 var (
 	// List of built-in decoders indexed by their numeric constant values (eg: reflect.Bool = 1).
 	decoders = []decoderFunc{

internal/hscan/hscan_test.go

@@ -4,6 +4,7 @@ import (
 	"math"
 	"strconv"
 	"testing"
+	"time"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
@@ -30,6 +31,20 @@ type data struct {
 	Bool    bool    `redis:"bool"`
 }
 
+type TimeRFC3339Nano struct {
+	time.Time
+}
+
+func (t *TimeRFC3339Nano) ScanRedis(s string) (err error) {
+	t.Time, err = time.Parse(time.RFC3339Nano, s)
+	return
+}
+
+type TimeData struct {
+	Name string           `redis:"name"`
+	Time *TimeRFC3339Nano `redis:"login"`
+}
+
 type i []interface{}
 
 func TestGinkgoSuite(t *testing.T) {
@@ -69,7 +84,7 @@ var _ = Describe("Scan", func() {
 			Expect(Scan(&d, i{v}, i{vals[k]})).To(HaveOccurred())
 		}
 
-		//success
+		// success
 		f = func(v uint64) string {
 			return strconv.FormatUint(v, 10)
 		}
@@ -175,4 +190,14 @@ var _ = Describe("Scan", func() {
 		Expect(Scan(&d, i{"bool"}, i{""})).To(HaveOccurred())
 		Expect(Scan(&d, i{"bool"}, i{"123"})).To(HaveOccurred())
 	})
+
+	It("Implements Scanner", func() {
+		var td TimeData
+
+		now := time.Now()
+		Expect(Scan(&td, i{"name", "login"}, i{"hello", now.Format(time.RFC3339Nano)})).NotTo(HaveOccurred())
+		Expect(td.Name).To(Equal("hello"))
+		Expect(td.Time.UnixNano()).To(Equal(now.UnixNano()))
+		Expect(td.Time.Format(time.RFC3339Nano)).To(Equal(now.Format(time.RFC3339Nano)))
+	})
 })

internal/hscan/structmap.go

@@ -39,12 +39,12 @@ func (s *structSpec) set(tag string, sf *structField) {
 }
 
 func newStructSpec(t reflect.Type, fieldTag string) *structSpec {
+	numField := t.NumField()
 	out := &structSpec{
-		m: make(map[string]*structField),
+		m: make(map[string]*structField, numField),
 	}
 
-	num := t.NumField()
-	for i := 0; i < num; i++ {
+	for i := 0; i < numField; i++ {
 		f := t.Field(i)
 
 		tag := f.Tag.Get(fieldTag)
@@ -84,7 +84,29 @@ func (s StructValue) Scan(key string, value string) error {
 	if !ok {
 		return nil
 	}
-	if err := field.fn(s.value.Field(field.index), value); err != nil {
+
+	v := s.value.Field(field.index)
+	isPtr := v.Kind() == reflect.Pointer
+
+	if isPtr && v.IsNil() {
+		v.Set(reflect.New(v.Type().Elem()))
+	}
+	if !isPtr && v.Type().Name() != "" && v.CanAddr() {
+		v = v.Addr()
+		isPtr = true
+	}
+
+	if isPtr && v.Type().NumMethod() > 0 && v.CanInterface() {
+		if scan, ok := v.Interface().(Scanner); ok {
+			return scan.ScanRedis(value)
+		}
+	}
+
+	if isPtr {
+		v = v.Elem()
+	}
+
+	if err := field.fn(v, value); err != nil {
 		t := s.value.Type()
 		return fmt.Errorf("cannot scan redis.result %s into struct field %s.%s of type %s, error-%s",
 			value, t.Name(), t.Field(field.index).Name, t.Field(field.index).Type, err.Error())

internal/internal.go

@@ -3,7 +3,7 @@ package internal
 import (
 	"time"
 
-	"github.com/go-redis/redis/v8/internal/rand"
+	"github.com/go-redis/redis/v9/internal/rand"
 )
 
 func RetryBackoff(retry int, minBackoff, maxBackoff time.Duration) time.Duration {

internal/once.go

@@ -32,7 +32,9 @@ type Once struct {
 
 // Do calls the function f if and only if Do has not been invoked
 // without error for this instance of Once.  In other words, given
-// 	var once Once
+//
+//	var once Once
+//
 // if once.Do(f) is called multiple times, only the first call will
 // invoke f, even if f has a different value in each invocation unless
 // f returns an error.  A new instance of Once is required for each
@@ -41,7 +43,8 @@ type Once struct {
 // Do is intended for initialization that must be run exactly once.  Since f
 // is niladic, it may be necessary to use a function literal to capture the
 // arguments to a function to be invoked by Do:
-// 	err := config.once.Do(func() error { return config.init(filename) })
+//
+//	err := config.once.Do(func() error { return config.init(filename) })
 func (o *Once) Do(f func() error) error {
 	if atomic.LoadUint32(&o.done) == 1 {
 		return nil

internal/pool/bench_test.go

@@ -6,7 +6,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-redis/redis/v8/internal/pool"
+	"github.com/go-redis/redis/v9/internal/pool"
 )
 
 type poolGetPutBenchmark struct {
@@ -30,11 +30,10 @@ func BenchmarkPoolGetPut(b *testing.B) {
 	for _, bm := range benchmarks {
 		b.Run(bm.String(), func(b *testing.B) {
 			connPool := pool.NewConnPool(&pool.Options{
-				Dialer:             dummyDialer,
-				PoolSize:           bm.poolSize,
-				PoolTimeout:        time.Second,
-				IdleTimeout:        time.Hour,
-				IdleCheckFrequency: time.Hour,
+				Dialer:          dummyDialer,
+				PoolSize:        bm.poolSize,
+				PoolTimeout:     time.Second,
+				ConnMaxIdleTime: time.Hour,
 			})
 
 			b.ResetTimer()
@@ -74,11 +73,10 @@ func BenchmarkPoolGetRemove(b *testing.B) {
 	for _, bm := range benchmarks {
 		b.Run(bm.String(), func(b *testing.B) {
 			connPool := pool.NewConnPool(&pool.Options{
-				Dialer:             dummyDialer,
-				PoolSize:           bm.poolSize,
-				PoolTimeout:        time.Second,
-				IdleTimeout:        time.Hour,
-				IdleCheckFrequency: time.Hour,
+				Dialer:          dummyDialer,
+				PoolSize:        bm.poolSize,
+				PoolTimeout:     time.Second,
+				ConnMaxIdleTime: time.Hour,
 			})
 
 			b.ResetTimer()

internal/pool/conn.go

@@ -7,7 +7,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/go-redis/redis/v8/internal/proto"
+	"github.com/go-redis/redis/v9/internal/proto"
 )
 
 var noDeadline = time.Time{}
@@ -63,9 +63,13 @@ func (cn *Conn) RemoteAddr() net.Addr {
 	return nil
 }
 
-func (cn *Conn) WithReader(ctx context.Context, timeout time.Duration, fn func(rd *proto.Reader) error) error {
-	if err := cn.netConn.SetReadDeadline(cn.deadline(ctx, timeout)); err != nil {
-		return err
+func (cn *Conn) WithReader(
+	ctx context.Context, timeout time.Duration, fn func(rd *proto.Reader) error,
+) error {
+	if timeout >= 0 {
+		if err := cn.netConn.SetReadDeadline(cn.deadline(ctx, timeout)); err != nil {
+			return err
+		}
 	}
 	return fn(cn.rd)
 }
@@ -73,8 +77,10 @@ func (cn *Conn) WithReader(ctx context.Context, timeout time.Duration, fn func(r
 func (cn *Conn) WithWriter(
 	ctx context.Context, timeout time.Duration, fn func(wr *proto.Writer) error,
 ) error {
-	if err := cn.netConn.SetWriteDeadline(cn.deadline(ctx, timeout)); err != nil {
-		return err
+	if timeout >= 0 {
+		if err := cn.netConn.SetWriteDeadline(cn.deadline(ctx, timeout)); err != nil {
+			return err
+		}
 	}
 
 	if cn.bw.Buffered() > 0 {

internal/pool/conn_check.go

@@ -0,0 +1,50 @@
+//go:build linux || darwin || dragonfly || freebsd || netbsd || openbsd || solaris || illumos
+// +build linux darwin dragonfly freebsd netbsd openbsd solaris illumos
+
+package pool
+
+import (
+	"errors"
+	"io"
+	"net"
+	"syscall"
+	"time"
+)
+
+var errUnexpectedRead = errors.New("unexpected read from socket")
+
+func connCheck(conn net.Conn) error {
+	// Reset previous timeout.
+	_ = conn.SetDeadline(time.Time{})
+
+	sysConn, ok := conn.(syscall.Conn)
+	if !ok {
+		return nil
+	}
+	rawConn, err := sysConn.SyscallConn()
+	if err != nil {
+		return err
+	}
+
+	var sysErr error
+
+	if err := rawConn.Read(func(fd uintptr) bool {
+		var buf [1]byte
+		n, err := syscall.Read(int(fd), buf[:])
+		switch {
+		case n == 0 && err == nil:
+			sysErr = io.EOF
+		case n > 0:
+			sysErr = errUnexpectedRead
+		case err == syscall.EAGAIN || err == syscall.EWOULDBLOCK:
+			sysErr = nil
+		default:
+			sysErr = err
+		}
+		return true
+	}); err != nil {
+		return err
+	}
+
+	return sysErr
+}

internal/pool/conn_check_dummy.go

@@ -0,0 +1,10 @@
+//go:build !linux && !darwin && !dragonfly && !freebsd && !netbsd && !openbsd && !solaris && !illumos
+// +build !linux,!darwin,!dragonfly,!freebsd,!netbsd,!openbsd,!solaris,!illumos
+
+package pool
+
+import "net"
+
+func connCheck(conn net.Conn) error {
+	return nil
+}