2022-02-20 08:36:00 +03:00
|
|
|
# Redis client for Go
|
2017-06-17 13:01:40 +03:00
|
|
|
|
2021-03-23 11:28:25 +03:00
|
|
|
![build workflow](https://github.com/go-redis/redis/actions/workflows/build.yml/badge.svg)
|
2020-09-02 09:41:39 +03:00
|
|
|
[![PkgGoDev](https://pkg.go.dev/badge/github.com/go-redis/redis/v8)](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc)
|
2020-09-18 09:24:22 +03:00
|
|
|
[![Documentation](https://img.shields.io/badge/redis-documentation-informational)](https://redis.uptrace.dev/)
|
2022-03-18 15:00:38 +03:00
|
|
|
[![Chat](https://discordapp.com/api/guilds/752070105847955518/widget.png)](https://discord.gg/rWtp5Aj)
|
2020-09-02 09:41:39 +03:00
|
|
|
|
2022-04-03 09:27:24 +03:00
|
|
|
> go-redis is brought to you by :star: [**uptrace/uptrace**](https://github.com/uptrace/uptrace).
|
2022-04-05 09:34:28 +03:00
|
|
|
> Uptrace is an open source and blazingly fast
|
|
|
|
> [distributed tracing tool](https://get.uptrace.dev/compare/distributed-tracing-tools.html) powered
|
|
|
|
> by OpenTelemetry and ClickHouse. Give it a star as well!
|
2022-02-22 16:18:47 +03:00
|
|
|
|
|
|
|
## Resources
|
|
|
|
|
2020-10-12 17:02:00 +03:00
|
|
|
- [Documentation](https://redis.uptrace.dev)
|
2022-03-19 15:32:12 +03:00
|
|
|
- [Discussions](https://github.com/go-redis/redis/discussions)
|
|
|
|
- [Chat](https://discord.gg/rWtp5Aj)
|
2020-06-10 15:04:12 +03:00
|
|
|
- [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)
|
2020-10-10 09:32:05 +03:00
|
|
|
- [RealWorld example app](https://github.com/uptrace/go-treemux-realworld-example-app)
|
2020-06-10 15:04:12 +03:00
|
|
|
|
2020-06-09 17:59:23 +03:00
|
|
|
## Ecosystem
|
|
|
|
|
2022-02-22 16:18:47 +03:00
|
|
|
- [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)
|
2020-06-09 17:59:23 +03:00
|
|
|
|
|
|
|
## Features
|
2014-05-11 11:42:40 +04:00
|
|
|
|
2020-09-09 14:46:01 +03:00
|
|
|
- Redis 3 commands except QUIT, MONITOR, and SYNC.
|
2020-06-09 17:59:23 +03:00
|
|
|
- Automatic connection pooling with
|
|
|
|
[circuit breaker](https://en.wikipedia.org/wiki/Circuit_breaker_design_pattern) support.
|
2020-05-09 17:38:45 +03:00
|
|
|
- [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).
|
2021-11-25 12:02:28 +03:00
|
|
|
- [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).
|
2020-05-09 17:38:45 +03:00
|
|
|
- [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).
|
2021-11-25 12:02:28 +03:00
|
|
|
- [Cluster of Redis Servers](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#example-NewClusterClient-ManualSetup)
|
2020-06-09 17:59:23 +03:00
|
|
|
without using cluster mode and Redis Sentinel.
|
2020-05-09 17:38:45 +03:00
|
|
|
- [Ring](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#NewRing).
|
2021-11-25 12:02:28 +03:00
|
|
|
- [Instrumentation](https://pkg.go.dev/github.com/go-redis/redis/v8?tab=doc#example-package-Instrumentation).
|
2014-05-11 11:42:40 +04:00
|
|
|
|
2015-10-25 14:30:26 +03:00
|
|
|
## Installation
|
2014-05-11 11:42:40 +04:00
|
|
|
|
2020-10-12 17:02:00 +03:00
|
|
|
go-redis supports 2 last Go versions and requires a Go version with
|
|
|
|
[modules](https://github.com/golang/go/wiki/Modules) support. So make sure to initialize a Go
|
|
|
|
module:
|
2014-05-11 11:42:40 +04:00
|
|
|
|
2020-05-09 17:38:45 +03:00
|
|
|
```shell
|
2019-12-09 10:54:23 +03:00
|
|
|
go mod init github.com/my/repo
|
2016-10-12 15:11:09 +03:00
|
|
|
```
|
|
|
|
|
2020-11-21 10:56:52 +03:00
|
|
|
And then install go-redis/v8 (note _v8_ in the import; omitting it is a popular mistake):
|
2016-10-12 15:11:09 +03:00
|
|
|
|
2020-10-12 17:02:00 +03:00
|
|
|
```shell
|
|
|
|
go get github.com/go-redis/redis/v8
|
2016-10-12 15:11:09 +03:00
|
|
|
```
|
|
|
|
|
2015-10-25 14:30:26 +03:00
|
|
|
## Quickstart
|
2015-05-23 14:33:33 +03:00
|
|
|
|
2020-05-09 17:38:45 +03:00
|
|
|
```go
|
2020-06-14 13:45:37 +03:00
|
|
|
import (
|
|
|
|
"context"
|
2020-09-02 09:41:39 +03:00
|
|
|
"github.com/go-redis/redis/v8"
|
2022-01-31 13:34:32 +03:00
|
|
|
"fmt"
|
2020-06-14 13:45:37 +03:00
|
|
|
)
|
|
|
|
|
|
|
|
var ctx = context.Background()
|
|
|
|
|
2015-05-23 14:33:33 +03:00
|
|
|
func ExampleClient() {
|
2020-06-10 15:04:12 +03:00
|
|
|
rdb := redis.NewClient(&redis.Options{
|
2020-05-26 12:07:28 +03:00
|
|
|
Addr: "localhost:6379",
|
|
|
|
Password: "", // no password set
|
|
|
|
DB: 0, // use default DB
|
|
|
|
})
|
2020-10-12 17:02:00 +03:00
|
|
|
|
2020-06-10 15:04:12 +03:00
|
|
|
err := rdb.Set(ctx, "key", "value", 0).Err()
|
2020-05-26 12:07:28 +03:00
|
|
|
if err != nil {
|
|
|
|
panic(err)
|
|
|
|
}
|
|
|
|
|
2020-06-10 15:04:12 +03:00
|
|
|
val, err := rdb.Get(ctx, "key").Result()
|
2020-05-26 12:07:28 +03:00
|
|
|
if err != nil {
|
|
|
|
panic(err)
|
|
|
|
}
|
|
|
|
fmt.Println("key", val)
|
|
|
|
|
2020-06-10 15:04:12 +03:00
|
|
|
val2, err := rdb.Get(ctx, "key2").Result()
|
2020-05-26 12:07:28 +03:00
|
|
|
if err == redis.Nil {
|
|
|
|
fmt.Println("key2 does not exist")
|
|
|
|
} else if err != nil {
|
|
|
|
panic(err)
|
|
|
|
} else {
|
|
|
|
fmt.Println("key2", val2)
|
|
|
|
}
|
|
|
|
// Output: key value
|
|
|
|
// key2 does not exist
|
2015-05-23 14:33:33 +03:00
|
|
|
}
|
|
|
|
```
|
|
|
|
|
2015-10-25 14:30:26 +03:00
|
|
|
## Look and feel
|
2014-05-11 11:42:40 +04:00
|
|
|
|
|
|
|
Some corner cases:
|
|
|
|
|
2020-05-09 17:38:45 +03:00
|
|
|
```go
|
2018-07-20 11:47:53 +03:00
|
|
|
// SET key value EX 10 NX
|
2020-06-10 15:04:12 +03:00
|
|
|
set, err := rdb.SetNX(ctx, "key", "value", 10*time.Second).Result()
|
2015-05-23 14:33:33 +03:00
|
|
|
|
2020-09-18 14:49:12 +03:00
|
|
|
// SET key value keepttl NX
|
|
|
|
set, err := rdb.SetNX(ctx, "key", "value", redis.KeepTTL).Result()
|
|
|
|
|
2018-07-20 11:47:53 +03:00
|
|
|
// SORT list LIMIT 0 2 ASC
|
2020-06-10 15:04:12 +03:00
|
|
|
vals, err := rdb.Sort(ctx, "list", &redis.Sort{Offset: 0, Count: 2, Order: "ASC"}).Result()
|
2014-05-11 11:42:40 +04:00
|
|
|
|
2018-07-20 11:47:53 +03:00
|
|
|
// ZRANGEBYSCORE zset -inf +inf WITHSCORES LIMIT 0 2
|
2020-06-10 15:04:12 +03:00
|
|
|
vals, err := rdb.ZRangeByScoreWithScores(ctx, "zset", &redis.ZRangeBy{
|
2020-05-26 12:07:28 +03:00
|
|
|
Min: "-inf",
|
|
|
|
Max: "+inf",
|
|
|
|
Offset: 0,
|
|
|
|
Count: 2,
|
2018-07-20 11:47:53 +03:00
|
|
|
}).Result()
|
2014-05-11 11:42:40 +04:00
|
|
|
|
2018-07-20 11:47:53 +03:00
|
|
|
// ZINTERSTORE out 2 zset1 zset2 WEIGHTS 2 3 AGGREGATE SUM
|
2020-06-10 15:04:12 +03:00
|
|
|
vals, err := rdb.ZInterStore(ctx, "out", &redis.ZStore{
|
2020-05-26 12:07:28 +03:00
|
|
|
Keys: []string{"zset1", "zset2"},
|
|
|
|
Weights: []int64{2, 3}
|
2020-04-12 12:27:32 +03:00
|
|
|
}).Result()
|
2014-05-11 11:42:40 +04:00
|
|
|
|
2018-07-20 11:47:53 +03:00
|
|
|
// EVAL "return {KEYS[1],ARGV[1]}" 1 "key" "hello"
|
2020-06-10 15:04:12 +03:00
|
|
|
vals, err := rdb.Eval(ctx, "return {KEYS[1],ARGV[1]}", []string{"key"}, "hello").Result()
|
2016-03-19 17:55:22 +03:00
|
|
|
|
2019-06-04 13:32:54 +03:00
|
|
|
// custom command
|
2020-06-10 15:04:12 +03:00
|
|
|
res, err := rdb.Do(ctx, "set", "key", "value").Result()
|
2016-03-10 12:10:47 +03:00
|
|
|
```
|
2021-02-25 18:58:15 +03:00
|
|
|
|
2020-12-21 09:55:13 +03:00
|
|
|
## Run the test
|
2021-02-25 18:58:15 +03:00
|
|
|
|
|
|
|
go-redis will start a redis-server and run the test cases.
|
2020-12-21 09:55:13 +03:00
|
|
|
|
2021-04-29 08:45:13 +03:00
|
|
|
The paths of redis-server bin file and redis config file are defined in `main_test.go`:
|
2021-02-25 18:58:15 +03:00
|
|
|
|
2020-12-21 09:55:13 +03:00
|
|
|
```
|
|
|
|
var (
|
|
|
|
redisServerBin, _ = filepath.Abs(filepath.Join("testdata", "redis", "src", "redis-server"))
|
|
|
|
redisServerConf, _ = filepath.Abs(filepath.Join("testdata", "redis", "redis.conf"))
|
|
|
|
)
|
|
|
|
```
|
|
|
|
|
2021-02-25 18:58:15 +03:00
|
|
|
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/`:
|
|
|
|
|
2020-12-21 09:55:13 +03:00
|
|
|
```
|
|
|
|
ln -s /usr/bin/redis-server ./go-redis/testdata/redis/src
|
|
|
|
cp ./go-redis/testdata/redis.conf ./go-redis/testdata/redis/
|
|
|
|
```
|
|
|
|
|
|
|
|
Lastly, run:
|
2021-02-25 18:58:15 +03:00
|
|
|
|
2020-12-21 09:55:13 +03:00
|
|
|
```
|
|
|
|
go test
|
|
|
|
```
|
2021-07-14 14:40:25 +03:00
|
|
|
|
2022-04-05 10:06:50 +03:00
|
|
|
## 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)
|
|
|
|
|
2021-07-14 14:40:25 +03:00
|
|
|
## Contributors
|
|
|
|
|
|
|
|
Thanks to all the people who already contributed!
|
|
|
|
|
|
|
|
<a href="https://github.com/go-redis/redis/graphs/contributors">
|
|
|
|
<img src="https://contributors-img.web.app/image?repo=go-redis/redis" />
|
|
|
|
</a>
|