diff --git a/.golangci.yml b/.golangci.yml
index 53ce42a..de51455 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -2,26 +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
-    - forbidigo
diff --git a/bench_test.go b/bench_test.go
index 708da5d..5644f50 100644
--- a/bench_test.go
+++ b/bench_test.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"strconv"
 	"strings"
 	"sync"
 	"testing"
@@ -233,6 +234,45 @@ func BenchmarkZAdd(b *testing.B) {
 	})
 }
 
+func BenchmarkXRead(b *testing.B) {
+	ctx := context.Background()
+	client := benchmarkRedisClient(ctx, 10)
+	defer client.Close()
+
+	args := redis.XAddArgs{
+		Stream: "1",
+		ID:     "*",
+		Values: map[string]string{"uno": "dos"},
+	}
+
+	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)
+			}
+		}
+	})
+}
+
 var clientSink *redis.Client
 
 func BenchmarkWithContext(b *testing.B) {
diff --git a/commands.go b/commands.go
index c76242d..dfe8d0b 100644
--- a/commands.go
+++ b/commands.go
@@ -525,7 +525,37 @@ 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
 }
@@ -1778,7 +1808,7 @@ 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)
@@ -1860,7 +1890,7 @@ 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)
@@ -1957,7 +1987,7 @@ 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)
@@ -1989,7 +2019,7 @@ 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,
diff --git a/example/del-keys-without-ttl/README.md b/example/del-keys-without-ttl/README.md
new file mode 100644
index 0000000..c112ee2
--- /dev/null
+++ b/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.
diff --git a/example/del-keys-without-ttl/go.mod b/example/del-keys-without-ttl/go.mod
new file mode 100644
index 0000000..85b9b18
--- /dev/null
+++ b/example/del-keys-without-ttl/go.mod
@@ -0,0 +1,7 @@
+module github.com/go-redis/redis/example/del-keys-without-ttl
+
+go 1.14
+
+replace github.com/go-redis/redis/v8 => ../..
+
+require github.com/go-redis/redis/v8 v8.0.0-00010101000000-000000000000
diff --git a/example/del-keys-without-ttl/go.sum b/example/del-keys-without-ttl/go.sum
new file mode 100644
index 0000000..9dd0be6
--- /dev/null
+++ b/example/del-keys-without-ttl/go.sum
@@ -0,0 +1,101 @@
+github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
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+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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+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-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
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+google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+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 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
diff --git a/example/del-keys-without-ttl/main.go b/example/del-keys-without-ttl/main.go
new file mode 100644
index 0000000..2331ed1
--- /dev/null
+++ b/example/del-keys-without-ttl/main.go
@@ -0,0 +1,142 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"sync"
+
+	"github.com/go-redis/redis/v8"
+)
+
+func main() {
+	ctx := context.Background()
+
+	rdb := redis.NewClient(&redis.Options{
+		Addr: ":6379",
+	})
+
+	ch := make(chan string, 100)
+	var wg sync.WaitGroup
+
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		deleted, err := process(ctx, rdb, ch)
+		if err != nil {
+			panic(err)
+		}
+		fmt.Println("deleted", deleted, "keys")
+	}()
+
+	iter := rdb.Scan(ctx, 0, "", 0).Iterator()
+	for iter.Next(ctx) {
+		ch <- iter.Val()
+	}
+	if err := iter.Err(); err != nil {
+		panic(err)
+	}
+
+	close(ch)
+	wg.Wait()
+}
+
+func process(ctx context.Context, rdb *redis.Client, in <-chan string) (int, error) {
+	var wg sync.WaitGroup
+
+	out := make(chan string, 100)
+	defer func() {
+		close(out)
+		wg.Wait()
+	}()
+
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		if err := del(ctx, rdb, out); err != nil {
+			panic(err)
+		}
+	}()
+
+	var deleted int
+
+	keys := make([]string, 0, 100)
+	for key := range in {
+		keys = append(keys, key)
+		if len(keys) < 100 {
+			continue
+		}
+
+		var err error
+		keys, err = checkTTL(ctx, rdb, keys)
+		if err != nil {
+			return 0, err
+		}
+
+		for _, key := range keys {
+			out <- key
+		}
+		deleted += len(keys)
+
+		keys = keys[:0]
+	}
+
+	if len(keys) > 0 {
+		keys, err := checkTTL(ctx, rdb, keys)
+		if err != nil {
+			return 0, err
+		}
+
+		for _, key := range keys {
+			out <- key
+		}
+		deleted += len(keys)
+	}
+
+	return deleted, nil
+}
+
+func checkTTL(ctx context.Context, rdb *redis.Client, keys []string) ([]string, error) {
+	cmds, err := rdb.Pipelined(ctx, func(pipe redis.Pipeliner) error {
+		for _, key := range keys {
+			pipe.TTL(ctx, key)
+		}
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	for i := len(cmds) - 1; i >= 0; i-- {
+		d, err := cmds[i].(*redis.DurationCmd).Result()
+		if err != nil {
+			return nil, err
+		}
+		if d != -1 {
+			keys = append(keys[:i], keys[i+1:]...)
+		}
+	}
+
+	return keys, nil
+}
+
+func del(ctx context.Context, rdb *redis.Client, in <-chan string) error {
+	pipe := rdb.Pipeline()
+
+	for key := range in {
+		pipe.Del(ctx, key)
+
+		if pipe.Len() < 100 {
+			continue
+		}
+
+		if _, err := pipe.Exec(ctx); err != nil {
+			return err
+		}
+	}
+
+	if _, err := pipe.Exec(ctx); err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/example/lua-scripting/README.md b/example/lua-scripting/README.md
index bf802bf..3272d7d 100644
--- a/example/lua-scripting/README.md
+++ b/example/lua-scripting/README.md
@@ -1,6 +1,6 @@
 # Redis Lua scripting example
 
-This is an example for [Redis Lua scripting #](https://redis.uptrace.dev/guide/lua-scripting.html)
+This is an example for [Redis Lua scripting](https://redis.uptrace.dev/guide/lua-scripting.html)
 article. To run it:
 
 ```shell
diff --git a/example/otel/README.md b/example/otel/README.md
index 40db8ac..567a882 100644
--- a/example/otel/README.md
+++ b/example/otel/README.md
@@ -1,16 +1,34 @@
 # Example for go-redis OpenTelemetry instrumentation
 
-This example requires running Redis Server. You can start Redis Server using Docker:
+See [Monitoring performance and errors](https://redis.uptrace.dev/guide/tracing.html) for details.
+
+This example requires Redis Server on port `:6379`. You can start Redis Server using Docker:
 
 ```shell
 docker-compose up -d
 ```
 
-To run this example:
+You can run this example with different OpenTelemetry exporters by providing environment variables.
+
+**Stdout** exporter (default):
 
 ```shell
 go run .
 ```
 
-See [Monitoring performance and errors](https://redis.uptrace.dev/guide/tracing.html) for more
-details.
+**Jaeger** exporter:
+
+```shell
+OTEL_EXPORTER_JAEGER_ENDPOINT=http://localhost:14268/api/traces go run .
+```
+
+**Uptrace** exporter:
+
+```shell
+UPTRACE_DSN="https://<token>@uptrace.dev/<project_id>" go run .
+```
+
+## Links
+
+- [Find instrumentations](https://opentelemetry.uptrace.dev/instrumentations/?lang=go)
+- [OpenTelemetry Tracing API](https://opentelemetry.uptrace.dev/guide/go-tracing.html)
diff --git a/example/otel/go.mod b/example/otel/go.mod
index 6588d98..4c5f115 100644
--- a/example/otel/go.mod
+++ b/example/otel/go.mod
@@ -11,8 +11,13 @@ replace github.com/go-redis/redis/extra/rediscmd/v8 => ../../extra/rediscmd
 require (
 	github.com/go-redis/redis/extra/redisotel/v8 v8.11.4
 	github.com/go-redis/redis/v8 v8.11.4
-	go.opentelemetry.io/otel v1.0.0
-	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.0.0
-	go.opentelemetry.io/otel/sdk v1.0.0
-	golang.org/x/sys v0.0.0-20210923061019-b8560ed6a9b7 // indirect
+	github.com/uptrace/opentelemetry-go-extra/otelplay v0.1.3
+	github.com/uptrace/uptrace-go v1.1.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/runtime v0.26.1 // indirect
+	go.opentelemetry.io/otel v1.1.0
+	go.opentelemetry.io/proto/otlp v0.10.0 // indirect
+	golang.org/x/net v0.0.0-20211104170005-ce137452f963 // indirect
+	golang.org/x/sys v0.0.0-20211103235746-7861aae1554b // indirect
+	google.golang.org/genproto v0.0.0-20211104193956-4c6863e31247 // indirect
+	google.golang.org/grpc v1.42.0 // indirect
 )
diff --git a/example/otel/go.sum b/example/otel/go.sum
index 8d4e62a..5ecb346 100644
--- a/example/otel/go.sum
+++ b/example/otel/go.sum
@@ -1,71 +1,180 @@
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+github.com/cenkalti/backoff/v4 v4.1.1/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
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+golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211029165221-6e7872819dc8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211031064116-611d5d643895/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211103235746-7861aae1554b h1:1VkfZQv42XQlA/jchYumAnv1UPo6RgF9rJFkTgZIxO4=
+golang.org/x/sys v0.0.0-20211103235746-7861aae1554b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 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 v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
+golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 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/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -93,24 +213,53 @@ golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8T
 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=
+google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
+google.golang.org/genproto v0.0.0-20211005153810-c76a74d43a8e/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211029142109-e255c875f7c7/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20211104193956-4c6863e31247 h1:ZONpjmFT5e+I/0/xE3XXbG5OIvX2hRYzol04MhKBl2E=
+google.golang.org/genproto v0.0.0-20211104193956-4c6863e31247/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
+google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
+google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
+google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
+google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
+google.golang.org/grpc v1.41.0/go.mod h1:U3l9uK9J0sini8mHphKoXyaqDA/8VyGnDee1zzIUK6k=
+google.golang.org/grpc v1.42.0 h1:XT2/MFpuPFsEX2fWh3YQtHkZ+WYZFQRfaUgLZYj/p6A=
+google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
 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=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
 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 v1.25.0/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=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
+google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/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 v2.2.3/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=
+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=
diff --git a/example/otel/main.go b/example/otel/main.go
index 9216426..3bf0213 100644
--- a/example/otel/main.go
+++ b/example/otel/main.go
@@ -7,11 +7,10 @@ import (
 
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/codes"
-	"go.opentelemetry.io/otel/exporters/stdout/stdouttrace"
-	sdktrace "go.opentelemetry.io/otel/sdk/trace"
 
 	"github.com/go-redis/redis/extra/redisotel/v8"
 	"github.com/go-redis/redis/v8"
+	"github.com/uptrace/opentelemetry-go-extra/otelplay"
 )
 
 var tracer = otel.Tracer("redisexample")
@@ -19,8 +18,8 @@ var tracer = otel.Tracer("redisexample")
 func main() {
 	ctx := context.Background()
 
-	stop := configureOpentelemetry(ctx)
-	defer stop()
+	shutdown := otelplay.ConfigureOpentelemetry(ctx)
+	defer shutdown()
 
 	rdb := redis.NewClient(&redis.Options{
 		Addr: ":6379",
@@ -34,6 +33,8 @@ func main() {
 		span.RecordError(err)
 		span.SetStatus(codes.Error, err.Error())
 	}
+
+	otelplay.PrintTraceID(ctx)
 }
 
 func handleRequest(ctx context.Context, rdb *redis.Client) error {
@@ -68,22 +69,3 @@ func handleRequest(ctx context.Context, rdb *redis.Client) error {
 
 	return nil
 }
-
-func configureOpentelemetry(ctx context.Context) func() {
-	provider := sdktrace.NewTracerProvider()
-	otel.SetTracerProvider(provider)
-
-	exp, err := stdouttrace.New(stdouttrace.WithPrettyPrint())
-	if err != nil {
-		panic(err)
-	}
-
-	bsp := sdktrace.NewBatchSpanProcessor(exp)
-	provider.RegisterSpanProcessor(bsp)
-
-	return func() {
-		if err := provider.Shutdown(ctx); err != nil {
-			panic(err)
-		}
-	}
-}
diff --git a/extra/redisotel/go.sum b/extra/redisotel/go.sum
index 9f163a1..82aa0b0 100644
--- a/extra/redisotel/go.sum
+++ b/extra/redisotel/go.sum
@@ -33,6 +33,7 @@ github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+W
 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=
+github.com/onsi/ginkgo v1.16.5/go.mod h1:+E8gABHa3K6zRBolWtd+ROzc/U5bkGt0FwiG042wbpU=
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
 github.com/onsi/gomega v1.16.0 h1:6gjqkI8iiRHMvdccRJM8rVKjCWk6ZIm6FTm3ddIe4/c=
diff --git a/extra/redisotel/redisotel.go b/extra/redisotel/redisotel.go
index 89fa972..dff869a 100644
--- a/extra/redisotel/redisotel.go
+++ b/extra/redisotel/redisotel.go
@@ -27,11 +27,16 @@ func (TracingHook) BeforeProcess(ctx context.Context, cmd redis.Cmder) (context.
 		return ctx, nil
 	}
 
-	ctx, span := tracer.Start(ctx, cmd.FullName())
-	span.SetAttributes(
+	attrs := []attribute.KeyValue{
 		attribute.String("db.system", "redis"),
 		attribute.String("db.statement", rediscmd.CmdString(cmd)),
-	)
+	}
+	opts := []trace.SpanStartOption{
+		trace.WithSpanKind(trace.SpanKindClient),
+		trace.WithAttributes(attrs...),
+	}
+
+	ctx, _ = tracer.Start(ctx, cmd.FullName(), opts...)
 
 	return ctx, nil
 }
@@ -52,12 +57,17 @@ func (TracingHook) BeforeProcessPipeline(ctx context.Context, cmds []redis.Cmder
 
 	summary, cmdsString := rediscmd.CmdsString(cmds)
 
-	ctx, span := tracer.Start(ctx, "pipeline "+summary)
-	span.SetAttributes(
+	attrs := []attribute.KeyValue{
 		attribute.String("db.system", "redis"),
 		attribute.Int("db.redis.num_cmd", len(cmds)),
 		attribute.String("db.statement", cmdsString),
-	)
+	}
+	opts := []trace.SpanStartOption{
+		trace.WithSpanKind(trace.SpanKindClient),
+		trace.WithAttributes(attrs...),
+	}
+
+	ctx, _ = tracer.Start(ctx, "pipeline "+summary, opts...)
 
 	return ctx, nil
 }
diff --git a/go.mod b/go.mod
index d34c75d..d63923a 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/cespare/xxhash/v2 v2.1.2
 	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 v1.16.0
-	github.com/stretchr/testify v1.5.1
+	github.com/onsi/ginkgo v1.16.5
+	github.com/onsi/gomega v1.17.0
+  github.com/stretchr/testify v1.5.1
 )
diff --git a/go.sum b/go.sum
index db546ad..8869740 100644
--- a/go.sum
+++ b/go.sum
@@ -31,13 +31,13 @@ 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=
+github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
+github.com/onsi/ginkgo v1.16.5/go.mod h1:+E8gABHa3K6zRBolWtd+ROzc/U5bkGt0FwiG042wbpU=
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
-github.com/onsi/gomega v1.16.0 h1:6gjqkI8iiRHMvdccRJM8rVKjCWk6ZIm6FTm3ddIe4/c=
-github.com/onsi/gomega v1.16.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAlGdZY=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/onsi/gomega v1.17.0 h1:9Luw4uT5HTjHTN8+aNcSThgH1vdXnmdJ8xIfZ4wyTRE=
+github.com/onsi/gomega v1.17.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAlGdZY=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
diff --git a/internal/proto/scan.go b/internal/proto/scan.go
index 7d7183c..0e99476 100644
--- a/internal/proto/scan.go
+++ b/internal/proto/scan.go
@@ -10,6 +10,7 @@ import (
 )
 
 // Scan parses bytes `b` to `v` with appropriate type.
+//nolint:gocyclo
 func Scan(b []byte, v interface{}) error {
 	switch v := v.(type) {
 	case nil:
@@ -105,6 +106,13 @@ func Scan(b []byte, v interface{}) error {
 		var err error
 		*v, err = time.Parse(time.RFC3339Nano, util.BytesToString(b))
 		return err
+	case *time.Duration:
+		n, err := util.ParseInt(b, 10, 64)
+		if err != nil {
+			return err
+		}
+		*v = time.Duration(n)
+		return nil
 	case encoding.BinaryUnmarshaler:
 		return v.UnmarshalBinary(b)
 	default:
diff --git a/internal/proto/writer.go b/internal/proto/writer.go
index 81b09b8..c426098 100644
--- a/internal/proto/writer.go
+++ b/internal/proto/writer.go
@@ -98,6 +98,8 @@ func (w *Writer) WriteArg(v interface{}) error {
 	case time.Time:
 		w.numBuf = v.AppendFormat(w.numBuf[:0], time.RFC3339Nano)
 		return w.bytes(w.numBuf)
+	case time.Duration:
+		return w.int(v.Nanoseconds())
 	case encoding.BinaryMarshaler:
 		b, err := v.MarshalBinary()
 		if err != nil {
diff --git a/pipeline.go b/pipeline.go
index c6ec340..31bab97 100644
--- a/pipeline.go
+++ b/pipeline.go
@@ -24,6 +24,7 @@ type pipelineExecer func(context.Context, []Cmder) error
 // depends of your batch size and/or use TxPipeline.
 type Pipeliner interface {
 	StatefulCmdable
+	Len() int
 	Do(ctx context.Context, args ...interface{}) *Cmd
 	Process(ctx context.Context, cmd Cmder) error
 	Close() error
@@ -53,6 +54,15 @@ func (c *Pipeline) init() {
 	c.statefulCmdable = c.Process
 }
 
+// Len returns the number of queued commands.
+func (c *Pipeline) Len() int {
+	c.mu.Lock()
+	ln := len(c.cmds)
+	c.mu.Unlock()
+	return ln
+}
+
+// Do queues the custom command for later execution.
 func (c *Pipeline) Do(ctx context.Context, args ...interface{}) *Cmd {
 	cmd := NewCmd(ctx, args...)
 	_ = c.Process(ctx, cmd)
diff --git a/redis_test.go b/redis_test.go
index 05c6d79..095da2d 100644
--- a/redis_test.go
+++ b/redis_test.go
@@ -300,6 +300,18 @@ var _ = Describe("Client", func() {
 		Expect(tm2).To(BeTemporally("==", tm))
 	})
 
+	It("should set and scan durations", func() {
+		duration := 10 * time.Minute
+		err := client.Set(ctx, "duration", duration, 0).Err()
+		Expect(err).NotTo(HaveOccurred())
+
+		var duration2 time.Duration
+		err = client.Get(ctx, "duration").Scan(&duration2)
+		Expect(err).NotTo(HaveOccurred())
+
+		Expect(duration2).To(Equal(duration))
+	})
+
 	It("should Conn", func() {
 		err := client.Conn(ctx).Get(ctx, "this-key-does-not-exist").Err()
 		Expect(err).To(Equal(redis.Nil))