fixup trace span names

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

.github/workflows/autoapprove.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: approve
-        uses: hmarr/auto-approve-action@v2
+        uses: hmarr/auto-approve-action@v3
         if: github.actor == 'vtolstov' || github.actor == 'dependabot[bot]'
         id: approve
         with:

.github/workflows/build.yml

@@ -34,7 +34,7 @@ jobs:
       - name: checkout
         uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v3.2.0
+        uses: golangci/golangci-lint-action@v3.4.0
         continue-on-error: true
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

.github/workflows/dependabot-automerge.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
       - name: metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v1.3.3
+        uses: dependabot/fetch-metadata@v1.3.6
         with:
           github-token: "${{ secrets.TOKEN }}"
       - name: merge

.github/workflows/pr.yml

@@ -34,7 +34,7 @@ jobs:
       - name: checkout
         uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v3.2.0
+        uses: golangci/golangci-lint-action@v3.4.0
         continue-on-error: true
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.

.gitignore

@@ -0,0 +1 @@
+.idea

go.mod

@@ -1,11 +1,19 @@
 module go.unistack.org/micro-store-redis/v3
 
-go 1.16
+go 1.22
+
+toolchain go1.22.4
 
 require (
-	github.com/go-redis/redis/v8 v8.11.5
+	github.com/redis/go-redis/extra/rediscmd/v9 v9.6.2
-	github.com/google/gnostic v0.6.9 // indirect
+	github.com/redis/go-redis/v9 v9.6.2
-	go.unistack.org/micro/v3 v3.9.11
+	go.unistack.org/micro/v3 v3.10.97
-	golang.org/x/net v0.0.0-20220225172249-27dd8689420f // indirect
+)
-	gopkg.in/yaml.v3 v3.0.1 // indirect
+
+require (
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	go.unistack.org/micro-proto/v3 v3.4.1 // indirect
+	google.golang.org/protobuf v1.35.1 // indirect
 )

go.sum

@@ -1,233 +1,20 @@
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-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 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0 h1:hjy8E9ON/egN1tAYqKb61G10WtihqetD4sz2H+8nIeA=
-gopkg.in/yaml.v3 v3.0.0/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=

options.go

@@ -1,18 +1,67 @@
 package redis
 
 import (
-	"github.com/go-redis/redis/v8"
+	goredis "github.com/redis/go-redis/v9"
+	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v3/meter"
 	"go.unistack.org/micro/v3/store"
+	"go.unistack.org/micro/v3/tracer"
 )
 
 type configKey struct{}
 
-func Config(c *redis.Options) store.Option {
+func Config(c *goredis.Options) store.Option {
 	return store.SetOption(configKey{}, c)
 }
 
 type clusterConfigKey struct{}
 
-func ClusterConfig(c *redis.ClusterOptions) store.Option {
+func ClusterConfig(c *goredis.ClusterOptions) store.Option {
 	return store.SetOption(clusterConfigKey{}, c)
 }
+
+type universalConfigKey struct{}
+
+func UniversalConfig(c *goredis.UniversalOptions) store.Option {
+	return store.SetOption(universalConfigKey{}, c)
+}
+
+var (
+	labelHost = "redis_host"
+	labelName = "redis_name"
+)
+
+// Options struct holds wrapper options
+type Options struct {
+	Logger    logger.Logger
+	Meter     meter.Meter
+	Tracer    tracer.Tracer
+	RedisHost string
+	RedisName string
+}
+
+// Option func signature
+type Option func(*Options)
+
+// NewOptions create new Options struct from provided option slice
+func NewOptions(opts ...Option) Options {
+	options := Options{
+		Logger: logger.DefaultLogger,
+		Meter:  meter.DefaultMeter,
+		Tracer: tracer.DefaultTracer,
+	}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	options.Meter = options.Meter.Clone(
+		meter.Labels(
+			labelHost, options.RedisHost,
+			labelName, options.RedisName),
+	)
+
+	options.Logger = options.Logger.Clone(logger.WithAddCallerSkipCount(1))
+
+	return options
+}

redis.go

@@ -1,214 +1,744 @@
-package redis // import "go.unistack.org/micro-store-redis/v3"
+package redis
 
 import (
 	"context"
-	"fmt"
+	"errors"
+	"reflect"
+	"strings"
 	"time"
 
-	"github.com/go-redis/redis/v8"
+	goredis "github.com/redis/go-redis/v9"
+	"go.unistack.org/micro/v3/semconv"
 	"go.unistack.org/micro/v3/store"
+	pool "go.unistack.org/micro/v3/util/xpool"
 )
 
-type rkv struct {
+var (
+	DefaultPathSeparator = "/"
+
+	DefaultUniversalOptions = &goredis.UniversalOptions{
+		Username:        "",
+		Password:        "", // no password set
+		MaxRetries:      2,
+		MaxRetryBackoff: 256 * time.Millisecond,
+		DialTimeout:     1 * time.Second,
+		ReadTimeout:     1 * time.Second,
+		WriteTimeout:    1 * time.Second,
+		PoolTimeout:     1 * time.Second,
+		MinIdleConns:    10,
+	}
+
+	DefaultClusterOptions = &goredis.ClusterOptions{
+		Username:        "",
+		Password:        "", // no password set
+		MaxRetries:      2,
+		MaxRetryBackoff: 256 * time.Millisecond,
+		DialTimeout:     1 * time.Second,
+		ReadTimeout:     1 * time.Second,
+		WriteTimeout:    1 * time.Second,
+		PoolTimeout:     1 * time.Second,
+		MinIdleConns:    10,
+	}
+
+	DefaultOptions = &goredis.Options{
+		Username:        "",
+		Password:        "", // no password set
+		DB:              0,  // use default DB
+		MaxRetries:      2,
+		MaxRetryBackoff: 256 * time.Millisecond,
+		DialTimeout:     1 * time.Second,
+		ReadTimeout:     1 * time.Second,
+		WriteTimeout:    1 * time.Second,
+		PoolTimeout:     1 * time.Second,
+		MinIdleConns:    10,
+	}
+)
+
+type Store struct {
 	opts store.Options
-	cli  redisClient
+	cli  goredis.UniversalClient
+	done chan struct{}
+	pool *pool.StringsPool
 }
 
-// TODO: add ability to set some redis options https://pkg.go.dev/github.com/go-redis/redis/v8#Options
+func (r *Store) Connect(ctx context.Context) error {
-type redisClient interface {
+	if r.cli == nil {
-	Get(ctx context.Context, key string) *redis.StringCmd
+		return store.ErrNotConnected
-	Del(ctx context.Context, keys ...string) *redis.IntCmd
+	}
-	Set(ctx context.Context, key string, value interface{}, expiration time.Duration) *redis.StatusCmd
+	err := r.cli.Ping(ctx).Err()
-	Keys(ctx context.Context, pattern string) *redis.StringSliceCmd
+	setSpanError(ctx, err)
-	Exists(ctx context.Context, keys ...string) *redis.IntCmd
+	return err
-	Close() error
 }
 
-func (r *rkv) Connect(ctx context.Context) error {
+func (r *Store) Init(opts ...store.Option) error {
-	return nil
-}
-
-func (r *rkv) Init(opts ...store.Option) error {
 	for _, o := range opts {
 		o(&r.opts)
 	}
 
-	return r.configure()
+	err := r.configure()
-}
-
-func (r *rkv) Disconnect(ctx context.Context) error {
-	return r.cli.Close()
-}
-
-func (r *rkv) Exists(ctx context.Context, key string, opts ...store.ExistsOption) error {
-	options := store.NewExistsOptions(opts...)
-	if len(options.Namespace) == 0 {
-		options.Namespace = r.opts.Namespace
-	}
-	if r.opts.Timeout > 0 {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, r.opts.Timeout)
-		defer cancel()
-	}
-	rkey := fmt.Sprintf("%s%s", options.Namespace, key)
-	st, err := r.cli.Exists(ctx, rkey).Result()
 	if err != nil {
 		return err
 	}
-	if st == 0 {
+
-		return store.ErrNotFound
+	return nil
+}
+
+func (r *Store) Client() *goredis.Client {
+	if c, ok := r.cli.(*goredis.Client); ok {
+		return c
 	}
 	return nil
 }
 
-func (r *rkv) Read(ctx context.Context, key string, val interface{}, opts ...store.ReadOption) error {
+func (r *Store) UniversalClient() goredis.UniversalClient {
-	options := store.NewReadOptions(opts...)
+	return r.cli
-	if len(options.Namespace) == 0 {
+}
-		options.Namespace = r.opts.Namespace
-	}
-	if r.opts.Timeout > 0 {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, r.opts.Timeout)
-		defer cancel()
-	}
-	rkey := fmt.Sprintf("%s%s", options.Namespace, key)
-	buf, err := r.cli.Get(ctx, rkey).Bytes()
-	if err != nil && err == redis.Nil {
-		return store.ErrNotFound
-	} else if err != nil {
-		return err
-	}
-	if buf == nil {
-		return store.ErrNotFound
-	}
-	/*
-			d, err := r.Client.TTL(rkey).Result()
-			if err != nil {
-				return nil, err
-			}
 
-			records = append(records, &store.Record{
+func (r *Store) ClusterClient() *goredis.ClusterClient {
-				Key:    key,
+	if c, ok := r.cli.(*goredis.ClusterClient); ok {
-				Value:  val,
+		return c
-				Expiry: d,
+	}
-			})
+	return nil
+}
+
+func (r *Store) Disconnect(ctx context.Context) error {
+	var err error
+	select {
+	case <-r.done:
+		return err
+	default:
+		if r.cli != nil {
+			err = r.cli.Close()
 		}
-	*/
+		close(r.done)
-	return r.opts.Codec.Unmarshal(buf, val)
-}
-
-func (r *rkv) Delete(ctx context.Context, key string, opts ...store.DeleteOption) error {
-	options := store.NewDeleteOptions(opts...)
-	if len(options.Namespace) == 0 {
-		options.Namespace = r.opts.Namespace
-	}
-	if r.opts.Timeout > 0 {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, r.opts.Timeout)
-		defer cancel()
-	}
-	rkey := fmt.Sprintf("%s%s", options.Namespace, key)
-	return r.cli.Del(ctx, rkey).Err()
-}
-
-func (r *rkv) Write(ctx context.Context, key string, val interface{}, opts ...store.WriteOption) error {
-	options := store.NewWriteOptions(opts...)
-	if len(options.Namespace) == 0 {
-		options.Namespace = r.opts.Namespace
-	}
-
-	rkey := fmt.Sprintf("%s%s", options.Namespace, key)
-	buf, err := r.opts.Codec.Marshal(val)
-	if err != nil {
 		return err
 	}
-	if r.opts.Timeout > 0 {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, r.opts.Timeout)
-		defer cancel()
-	}
-	return r.cli.Set(ctx, rkey, buf, options.TTL).Err()
 }
 
-func (r *rkv) List(ctx context.Context, opts ...store.ListOption) ([]string, error) {
+func (r *Store) Exists(ctx context.Context, key string, opts ...store.ExistsOption) error {
+	b := r.pool.Get()
+	defer r.pool.Put(b)
+	options := store.NewExistsOptions(opts...)
+	labels := make([]string, 0, 6)
+	labels = append(labels, "name", options.Name, "statement", "exists")
+
+	timeout := r.opts.Timeout
+	if options.Timeout > 0 {
+		timeout = options.Timeout
+	}
+
+	if timeout > 0 {
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithTimeout(ctx, timeout)
+		defer cancel()
+	}
+
+	rkey := r.getKey(b, r.opts.Namespace, options.Namespace, key)
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, labels...).Inc()
+	ts := time.Now()
+	val, err := r.cli.Exists(ctx, rkey).Result()
+	setSpanError(ctx, err)
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, labels...).Dec()
+
+	r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, labels...).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, labels...).Update(te.Seconds())
+	if errors.Is(err, goredis.Nil) || (err == nil && val == 0) {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "miss")...).Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "hit")...).Inc()
+	} else if err != nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "failure")...).Inc()
+		return err
+	}
+
+	return nil
+}
+
+func (r *Store) Read(ctx context.Context, key string, val interface{}, opts ...store.ReadOption) error {
+	b := r.pool.Get()
+	defer r.pool.Put(b)
+
+	options := store.NewReadOptions(opts...)
+	labels := make([]string, 0, 6)
+	labels = append(labels, "name", options.Name, "statement", "read")
+
+	timeout := r.opts.Timeout
+	if options.Timeout > 0 {
+		timeout = options.Timeout
+	}
+
+	if timeout > 0 {
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithTimeout(ctx, timeout)
+		defer cancel()
+	}
+
+	rkey := r.getKey(b, r.opts.Namespace, options.Namespace, key)
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, labels...).Inc()
+	ts := time.Now()
+	buf, err := r.cli.Get(ctx, rkey).Bytes()
+	setSpanError(ctx, err)
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, labels...).Dec()
+	r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, labels...).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, labels...).Update(te.Seconds())
+	if errors.Is(err, goredis.Nil) || (err == nil && buf == nil) {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "miss")...).Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "hit")...).Inc()
+	} else if err != nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "failure")...).Inc()
+		return err
+	}
+
+	switch b := val.(type) {
+	case *[]byte:
+		*b = buf
+	case *string:
+		*b = string(buf)
+	default:
+		if err = r.opts.Codec.Unmarshal(buf, val); err != nil {
+			setSpanError(ctx, err)
+		}
+	}
+
+	return err
+}
+
+func (r *Store) MRead(ctx context.Context, keys []string, vals interface{}, opts ...store.ReadOption) error {
+	options := store.NewReadOptions(opts...)
+
+	timeout := r.opts.Timeout
+	if options.Timeout > 0 {
+		timeout = options.Timeout
+	}
+
+	if timeout > 0 {
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithTimeout(ctx, timeout)
+		defer cancel()
+	}
+
+	var rkeys []string
+	var pools []*strings.Builder
+	if r.opts.Namespace != "" || options.Namespace != "" {
+		rkeys = make([]string, len(keys))
+		pools = make([]*strings.Builder, len(keys))
+		for idx, key := range keys {
+			b := r.pool.Get()
+			pools[idx] = b
+			rkeys[idx] = r.getKey(b, r.opts.Namespace, options.Namespace, key)
+		}
+	}
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
+	ts := time.Now()
+	var rvals []interface{}
+	var err error
+	if r.opts.Namespace != "" || options.Namespace != "" {
+		rvals, err = r.cli.MGet(ctx, rkeys...).Result()
+		for idx := range pools {
+			r.pool.Put(pools[idx])
+		}
+	} else {
+		rvals, err = r.cli.MGet(ctx, keys...).Result()
+	}
+	setSpanError(ctx, err)
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == goredis.Nil || (len(rvals) == 0) {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
+		return err
+	}
+
+	vv := reflect.ValueOf(vals)
+	vt := reflect.TypeOf(vals)
+	switch vv.Kind() {
+	case reflect.Ptr:
+		vv = reflect.Indirect(vv)
+		vt = vt.Elem()
+	}
+	if vv.Kind() != reflect.Slice {
+		return store.ErrNotFound
+	}
+	nvv := reflect.MakeSlice(vt, len(rvals), len(rvals))
+	vt = vt.Elem()
+	for idx := 0; idx < len(rvals); idx++ {
+		if rvals[idx] == nil {
+			continue
+		}
+
+		itm := nvv.Index(idx)
+		var buf []byte
+		switch b := rvals[idx].(type) {
+		case []byte:
+			buf = b
+		case string:
+			buf = []byte(b)
+		}
+		// special case for raw data
+		if vt.Kind() == reflect.Slice && vt.Elem().Kind() == reflect.Uint8 {
+			itm.Set(reflect.MakeSlice(itm.Type(), len(buf), len(buf)))
+			itm.SetBytes(buf)
+			continue
+		} else if vt.Kind() == reflect.String {
+			itm.SetString(string(buf))
+			continue
+		}
+
+		itm.Set(reflect.New(vt.Elem()))
+		if err = r.opts.Codec.Unmarshal(buf, itm.Interface()); err != nil {
+			setSpanError(ctx, err)
+			return err
+		}
+	}
+	vv.Set(nvv)
+
+	return nil
+}
+
+func (r *Store) MDelete(ctx context.Context, keys []string, opts ...store.DeleteOption) error {
+	options := store.NewDeleteOptions(opts...)
+
+	timeout := r.opts.Timeout
+	if options.Timeout > 0 {
+		timeout = options.Timeout
+	}
+
+	if timeout > 0 {
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithTimeout(ctx, timeout)
+		defer cancel()
+	}
+
+	var rkeys []string
+	var pools []*strings.Builder
+	if r.opts.Namespace != "" || options.Namespace != "" {
+		rkeys = make([]string, len(keys))
+		pools = make([]*strings.Builder, len(keys))
+		for idx, key := range keys {
+			b := r.pool.Get()
+			pools[idx] = b
+			rkeys[idx] = r.getKey(b, r.opts.Namespace, options.Namespace, key)
+		}
+	}
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
+	ts := time.Now()
+	var err error
+	if r.opts.Namespace != "" || options.Namespace != "" {
+		err = r.cli.Del(ctx, rkeys...).Err()
+		for idx := range pools {
+			r.pool.Put(pools[idx])
+		}
+	} else {
+		err = r.cli.Del(ctx, keys...).Err()
+	}
+	setSpanError(ctx, err)
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == goredis.Nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
+		return err
+	}
+
+	return nil
+}
+
+func (r *Store) Delete(ctx context.Context, key string, opts ...store.DeleteOption) error {
+	b := r.pool.Get()
+	defer r.pool.Put(b)
+
+	options := store.NewDeleteOptions(opts...)
+	labels := make([]string, 0, 6)
+	labels = append(labels, "name", options.Name, "statement", "delete")
+
+	timeout := r.opts.Timeout
+	if options.Timeout > 0 {
+		timeout = options.Timeout
+	}
+
+	if timeout > 0 {
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithTimeout(ctx, timeout)
+		defer cancel()
+	}
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, labels...).Inc()
+	ts := time.Now()
+	err := r.cli.Del(ctx, r.getKey(b, r.opts.Namespace, options.Namespace, key)).Err()
+	te := time.Since(ts)
+	setSpanError(ctx, err)
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, labels...).Dec()
+	r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, labels...).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, labels...).Update(te.Seconds())
+	if errors.Is(err, goredis.Nil) {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "miss")...).Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "hit")...).Inc()
+	} else if err != nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "failure")...).Inc()
+		return err
+	}
+
+	return nil
+}
+
+func (r *Store) MWrite(ctx context.Context, keys []string, vals []interface{}, opts ...store.WriteOption) error {
+	options := store.NewWriteOptions(opts...)
+
+	timeout := r.opts.Timeout
+	if options.Timeout > 0 {
+		timeout = options.Timeout
+	}
+
+	if timeout > 0 {
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithTimeout(ctx, timeout)
+		defer cancel()
+	}
+
+	kvs := make([]string, 0, len(keys)*2)
+	pools := make([]*strings.Builder, len(keys))
+	for idx, key := range keys {
+		b := r.pool.Get()
+		pools[idx] = b
+		kvs = append(kvs, r.getKey(b, r.opts.Namespace, options.Namespace, key))
+
+		switch vt := vals[idx].(type) {
+		case string:
+			kvs = append(kvs, vt)
+		case []byte:
+			kvs = append(kvs, string(vt))
+		default:
+			buf, err := r.opts.Codec.Marshal(vt)
+			if err != nil {
+				return err
+			}
+			kvs = append(kvs, string(buf))
+		}
+	}
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
+
+	pipeliner := func(pipe goredis.Pipeliner) error {
+		for idx := 0; idx < len(kvs); idx += 2 {
+			if _, err := pipe.Set(ctx, kvs[idx], kvs[idx+1], options.TTL).Result(); err != nil {
+				setSpanError(ctx, err)
+				return err
+			}
+		}
+		return nil
+	}
+
+	ts := time.Now()
+	cmds, err := r.cli.Pipelined(ctx, pipeliner)
+	for idx := range pools {
+		r.pool.Put(pools[idx])
+	}
+	te := time.Since(ts)
+	setSpanError(ctx, err)
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == goredis.Nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
+		return err
+	}
+
+	for _, cmd := range cmds {
+		if err = cmd.Err(); err != nil {
+			if err == goredis.Nil {
+				r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
+				return store.ErrNotFound
+			}
+			setSpanError(ctx, err)
+			r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (r *Store) Write(ctx context.Context, key string, val interface{}, opts ...store.WriteOption) error {
+	b := r.pool.Get()
+	defer r.pool.Put(b)
+
+	options := store.NewWriteOptions(opts...)
+	labels := make([]string, 0, 6)
+	labels = append(labels, "name", options.Name, "statement", "write")
+
+	timeout := r.opts.Timeout
+	if options.Timeout > 0 {
+		timeout = options.Timeout
+	}
+
+	if timeout > 0 {
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithTimeout(ctx, timeout)
+		defer cancel()
+	}
+
+	rkey := r.getKey(b, r.opts.Namespace, options.Namespace, key)
+
+	var buf []byte
+	switch vt := val.(type) {
+	case string:
+		buf = []byte(vt)
+	case []byte:
+		buf = vt
+	default:
+		var err error
+		buf, err = r.opts.Codec.Marshal(val)
+		if err != nil {
+			return err
+		}
+	}
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, labels...).Inc()
+	ts := time.Now()
+	err := r.cli.Set(ctx, rkey, buf, options.TTL).Err()
+	te := time.Since(ts)
+	setSpanError(ctx, err)
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, labels...).Dec()
+	r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, labels...).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, labels...).Update(te.Seconds())
+	if errors.Is(err, goredis.Nil) {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "miss")...).Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "hit")...).Inc()
+	} else if err != nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, append(labels, "status", "failure")...).Inc()
+		return err
+	}
+
+	return err
+}
+
+func (r *Store) List(ctx context.Context, opts ...store.ListOption) ([]string, error) {
+	b := r.pool.Get()
+	defer r.pool.Put(b)
+
 	options := store.NewListOptions(opts...)
 	if len(options.Namespace) == 0 {
 		options.Namespace = r.opts.Namespace
 	}
-	if r.opts.Timeout > 0 {
+
+	rkey := r.getKey(b, options.Namespace, "", options.Prefix+"*")
+	if options.Suffix != "" {
+		rkey += options.Suffix
+	}
+
+	timeout := r.opts.Timeout
+	if options.Timeout > 0 {
+		timeout = options.Timeout
+	}
+
+	if timeout > 0 {
 		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, r.opts.Timeout)
+		ctx, cancel = context.WithTimeout(ctx, timeout)
 		defer cancel()
 	}
+
 	// TODO: add support for prefix/suffix/limit
-	keys, err := r.cli.Keys(ctx, "*").Result()
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Inc()
-	if err != nil {
+	ts := time.Now()
+	var keys []string
+	var err error
+
+	if c, ok := r.cli.(*goredis.ClusterClient); ok {
+		err = c.ForEachMaster(ctx, func(nctx context.Context, cli *goredis.Client) error {
+			nkeys, nerr := cli.Keys(nctx, rkey).Result()
+			if nerr != nil {
+				return nerr
+			}
+			keys = append(keys, nkeys...)
+			return nil
+		})
+	} else {
+		keys, err = r.cli.Keys(ctx, rkey).Result()
+	}
+	te := time.Since(ts)
+	setSpanError(ctx, err)
+
+	r.opts.Meter.Counter(semconv.StoreRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.StoreRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.StoreRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == goredis.Nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "miss").Inc()
+		return nil, store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		r.opts.Meter.Counter(semconv.StoreRequestTotal, "name", options.Name, "status", "failure").Inc()
 		return nil, err
 	}
 
+	prefix := r.opts.Namespace
+	if options.Namespace != "" {
+		prefix = options.Namespace
+	}
+	if prefix == "" {
+		return keys, nil
+	}
+
+	for idx, key := range keys {
+		keys[idx] = strings.TrimPrefix(key, prefix)
+	}
+
 	return keys, nil
 }
 
-func (r *rkv) Options() store.Options {
+func (r *Store) Options() store.Options {
 	return r.opts
 }
 
-func (r *rkv) Name() string {
+func (r *Store) Name() string {
 	return r.opts.Name
 }
 
-func (r *rkv) String() string {
+func (r *Store) String() string {
 	return "redis"
 }
 
-func NewStore(opts ...store.Option) store.Store {
+func NewStore(opts ...store.Option) *Store {
-	return &rkv{opts: store.NewOptions(opts...)}
+	return &Store{done: make(chan struct{}), opts: store.NewOptions(opts...)}
 }
 
-func (r *rkv) configure() error {
+func (r *Store) configure() error {
-	var redisOptions *redis.Options
+	if r.cli != nil && r.opts.Context == nil {
-	var redisClusterOptions *redis.ClusterOptions
+		return nil
-	var err error
-
-	nodes := r.opts.Addrs
-
-	if len(nodes) == 0 {
-		nodes = []string{"redis://127.0.0.1:6379"}
 	}
 
+	universalOptions := DefaultUniversalOptions
+
 	if r.opts.Context != nil {
-		if c, ok := r.opts.Context.Value(configKey{}).(*redis.Options); ok {
+		if o, ok := r.opts.Context.Value(configKey{}).(*goredis.Options); ok {
-			redisOptions = c
+			universalOptions.Addrs = []string{o.Addr}
-		}
+			universalOptions.Dialer = o.Dialer
+			universalOptions.OnConnect = o.OnConnect
+			universalOptions.Username = o.Username
+			universalOptions.Password = o.Password
 
-		if c, ok := r.opts.Context.Value(clusterConfigKey{}).(*redis.ClusterOptions); ok {
+			universalOptions.MaxRetries = o.MaxRetries
-			redisClusterOptions = c
+			universalOptions.MinRetryBackoff = o.MinRetryBackoff
-		}
+			universalOptions.MaxRetryBackoff = o.MaxRetryBackoff
-	}
 
-	if redisOptions != nil && redisClusterOptions != nil {
+			universalOptions.DialTimeout = o.DialTimeout
-		return fmt.Errorf("must specify only one option Config or ClusterConfig")
+			universalOptions.ReadTimeout = o.ReadTimeout
-	}
+			universalOptions.WriteTimeout = o.WriteTimeout
+			universalOptions.ContextTimeoutEnabled = o.ContextTimeoutEnabled
 
-	if redisOptions == nil && redisClusterOptions == nil && len(nodes) == 1 {
+			universalOptions.PoolFIFO = o.PoolFIFO
-		redisOptions, err = redis.ParseURL(nodes[0])
+
-		if err != nil {
+			universalOptions.PoolSize = o.PoolSize
-			// Backwards compatibility
+			universalOptions.PoolTimeout = o.PoolTimeout
-			redisOptions = &redis.Options{
+			universalOptions.MinIdleConns = o.MinIdleConns
-				Addr:     nodes[0],
+			universalOptions.MaxIdleConns = o.MaxIdleConns
-				Password: "", // no password set
+			universalOptions.ConnMaxIdleTime = o.ConnMaxIdleTime
-				DB:       0,  // use default DB
+			universalOptions.ConnMaxLifetime = o.ConnMaxLifetime
+
+			if r.opts.TLSConfig != nil {
+				universalOptions.TLSConfig = r.opts.TLSConfig
+			}
+		}
+
+		if o, ok := r.opts.Context.Value(clusterConfigKey{}).(*goredis.ClusterOptions); ok {
+			universalOptions.Addrs = o.Addrs
+			universalOptions.Dialer = o.Dialer
+			universalOptions.OnConnect = o.OnConnect
+			universalOptions.Username = o.Username
+			universalOptions.Password = o.Password
+
+			universalOptions.MaxRedirects = o.MaxRedirects
+			universalOptions.ReadOnly = o.ReadOnly
+			universalOptions.RouteByLatency = o.RouteByLatency
+			universalOptions.RouteRandomly = o.RouteRandomly
+
+			universalOptions.MaxRetries = o.MaxRetries
+			universalOptions.MinRetryBackoff = o.MinRetryBackoff
+			universalOptions.MaxRetryBackoff = o.MaxRetryBackoff
+
+			universalOptions.DialTimeout = o.DialTimeout
+			universalOptions.ReadTimeout = o.ReadTimeout
+			universalOptions.WriteTimeout = o.WriteTimeout
+			universalOptions.ContextTimeoutEnabled = o.ContextTimeoutEnabled
+
+			universalOptions.PoolFIFO = o.PoolFIFO
+
+			universalOptions.PoolSize = o.PoolSize
+			universalOptions.PoolTimeout = o.PoolTimeout
+			universalOptions.MinIdleConns = o.MinIdleConns
+			universalOptions.MaxIdleConns = o.MaxIdleConns
+			universalOptions.ConnMaxIdleTime = o.ConnMaxIdleTime
+			universalOptions.ConnMaxLifetime = o.ConnMaxLifetime
+			if r.opts.TLSConfig != nil {
+				universalOptions.TLSConfig = r.opts.TLSConfig
+			}
+		}
+
+		if o, ok := r.opts.Context.Value(universalConfigKey{}).(*goredis.UniversalOptions); ok {
+			universalOptions = o
+			if r.opts.TLSConfig != nil {
+				universalOptions.TLSConfig = r.opts.TLSConfig
 			}
 		}
-	} else if redisOptions == nil && redisClusterOptions == nil && len(nodes) > 1 {
-		redisClusterOptions = &redis.ClusterOptions{Addrs: nodes}
 	}
 
-	if redisOptions != nil {
+	if len(r.opts.Addrs) > 0 {
-		r.cli = redis.NewClient(redisOptions)
+		universalOptions.Addrs = r.opts.Addrs
-	} else if redisClusterOptions != nil {
+	} else {
-		r.cli = redis.NewClusterClient(redisClusterOptions)
+		universalOptions.Addrs = []string{"127.0.0.1:6379"}
 	}
 
+	r.cli = goredis.NewUniversalClient(universalOptions)
+	setTracing(r.cli, r.opts.Tracer)
+
+	r.pool = pool.NewStringsPool(50)
+
+	r.statsMeter()
+
 	return nil
 }
+
+func (r *Store) getKey(b *strings.Builder, mainNamespace string, opNamespace string, key string) string {
+	if opNamespace == "" {
+		opNamespace = mainNamespace
+	}
+	if opNamespace != "" {
+		b.WriteString(opNamespace)
+		b.WriteString(DefaultPathSeparator)
+	}
+	b.WriteString(key)
+	return b.String()
+}

redis_test.go

@@ -1,19 +1,68 @@
 package redis
 
 import (
+	"bytes"
 	"context"
 	"os"
 	"testing"
 	"time"
 
-	"github.com/go-redis/redis/v8"
+	goredis "github.com/redis/go-redis/v9"
 	"go.unistack.org/micro/v3/store"
+	"go.unistack.org/micro/v3/tracer"
 )
 
+func TestLazyConnect(t *testing.T) {
+	ctx := context.Background()
+	var err error
+
+	r := NewStore()
+
+	if err = r.Init(); err != nil {
+		t.Fatal(err)
+	}
+	if err = r.Connect(ctx); err != nil {
+		t.Logf("connect failed %v", err)
+	}
+
+	for {
+		if err = r.Write(ctx, "mykey", "myval"); err != nil {
+			t.Logf("failed to write %v", err)
+		}
+	}
+}
+
+func TestKeepTTL(t *testing.T) {
+	ctx := context.Background()
+
+	if tr := os.Getenv("INTEGRATION_TESTS"); len(tr) > 0 {
+		t.Skip()
+	}
+	r := NewStore(store.Addrs(os.Getenv("STORE_NODES")))
+
+	if err := r.Init(); err != nil {
+		t.Fatal(err)
+	}
+	if err := r.Connect(ctx); err != nil {
+		t.Fatal(err)
+	}
+
+	key := "key"
+	err := r.Write(ctx, key, "val1", store.WriteTTL(15*time.Second))
+	if err != nil {
+		t.Fatalf("Write error: %v", err)
+	}
+	time.Sleep(3 * time.Second)
+	err = r.Write(ctx, key, "val2", store.WriteTTL(-1))
+	if err != nil {
+		t.Fatalf("Write error: %v", err)
+	}
+}
+
 func Test_rkv_configure(t *testing.T) {
 	type fields struct {
 		options store.Options
-		Client  *redis.Client
+		Client  goredis.UniversalClient
 	}
 	type wantValues struct {
 		username string
@@ -36,7 +85,7 @@ func Test_rkv_configure(t *testing.T) {
 			},
 		},
 		{
-			name: "legacy Url", fields: fields{options: store.Options{Addrs: []string{"127.0.0.1:6379"}}, Client: nil},
+			name: "legacy Url", fields: fields{options: store.Options{Tracer: tracer.DefaultTracer, Addrs: []string{"127.0.0.1:6379"}}, Client: nil},
 			wantErr: false, want: wantValues{
 				username: "",
 				password: "",
@@ -44,7 +93,7 @@ func Test_rkv_configure(t *testing.T) {
 			},
 		},
 		{
-			name: "New Url", fields: fields{options: store.Options{Addrs: []string{"redis://127.0.0.1:6379"}}, Client: nil},
+			name: "New Url", fields: fields{options: store.Options{Tracer: tracer.DefaultTracer, Addrs: []string{"redis://127.0.0.1:6379"}}, Client: nil},
 			wantErr: false, want: wantValues{
 				username: "",
 				password: "",
@@ -52,7 +101,7 @@ func Test_rkv_configure(t *testing.T) {
 			},
 		},
 		{
-			name: "Url with Pwd", fields: fields{options: store.Options{Addrs: []string{"redis://:password@redis:6379"}}, Client: nil},
+			name: "Url with Pwd", fields: fields{options: store.Options{Tracer: tracer.DefaultTracer, Addrs: []string{"redis://:password@redis:6379"}}, Client: nil},
 			wantErr: false, want: wantValues{
 				username: "",
 				password: "password",
@@ -60,7 +109,7 @@ func Test_rkv_configure(t *testing.T) {
 			},
 		},
 		{
-			name: "Url with username and Pwd", fields: fields{options: store.Options{Addrs: []string{"redis://username:password@redis:6379"}}, Client: nil},
+			name: "Url with username and Pwd", fields: fields{options: store.Options{Tracer: tracer.DefaultTracer, Addrs: []string{"redis://username:password@redis:6379"}}, Client: nil},
 			wantErr: false, want: wantValues{
 				username: "username",
 				password: "password",
@@ -70,11 +119,11 @@ func Test_rkv_configure(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			r := &rkv{
+			rc := &Store{
 				opts: tt.fields.options,
 				cli:  tt.fields.Client,
 			}
-			err := r.configure()
+			err := rc.configure()
 			if (err != nil) != tt.wantErr {
 				t.Errorf("configure() error = %v, wantErr %v", err, tt.wantErr)
 				return
@@ -89,33 +138,143 @@ func Test_Store(t *testing.T) {
 	if tr := os.Getenv("INTEGRATION_TESTS"); len(tr) > 0 {
 		t.Skip()
 	}
-	r := new(rkv)
+	r := NewStore(store.Addrs(os.Getenv("STORE_NODES")))
 
-	// r.options = store.Options{Nodes: []string{"redis://:password@127.0.0.1:6379"}}
+	if err := r.Init(); err != nil {
-	// r.options = store.Options{Nodes: []string{"127.0.0.1:6379"}}
+		t.Fatal(err)
-
+	}
-	r.opts = store.NewOptions(store.Addrs(os.Getenv("STORE_NODES")))
+	if err := r.Connect(ctx); err != nil {
-
-	if err := r.configure(); err != nil {
 		t.Fatal(err)
 	}
 
 	key := "myTest"
+	tval := []byte("myValue")
 	var val []byte
-	err := r.Write(ctx, key, []byte("myValue"), store.WriteTTL(2*time.Minute))
+	err := r.Write(ctx, key, tval, store.WriteTTL(2*time.Minute))
 	if err != nil {
 		t.Fatalf("Write error: %v", err)
 	}
-	err = r.Read(ctx, key, val)
+	err = r.Read(ctx, key, &val)
 	if err != nil {
 		t.Fatalf("Read error: %v\n", err)
+	} else if !bytes.Equal(val, tval) {
+		t.Fatalf("read err: data not eq")
 	}
+	keys, err := r.List(ctx)
+	if err != nil {
+		t.Fatalf("List error: %v\n", err)
+	}
+	_ = keys
 	err = r.Delete(ctx, key)
 	if err != nil {
 		t.Fatalf("Delete error: %v\n", err)
 	}
-	_, err = r.List(ctx)
+	// t.Logf("%v", keys)
+}
+
+func Test_MRead(t *testing.T) {
+	ctx := context.Background()
+	var err error
+	if tr := os.Getenv("INTEGRATION_TESTS"); len(tr) > 0 {
+		t.Skip()
+	}
+	r := NewStore(store.Addrs(os.Getenv("STORE_NODES")))
+
+	if err = r.Init(); err != nil {
+		t.Fatal(err)
+	}
+	if err = r.Connect(ctx); err != nil {
+		t.Fatal(err)
+	}
+
+	key1 := "myTest1"
+	key2 := "myTest2"
+	tval1 := []byte("myValue1")
+	tval2 := []byte("myValue2")
+	var vals [][]byte
+	err = r.Write(ctx, key1, tval1, store.WriteTTL(2*time.Minute))
+	if err != nil {
+		t.Fatalf("Write error: %v", err)
+	}
+	err = r.Write(ctx, key2, tval2, store.WriteTTL(2*time.Minute))
+	if err != nil {
+		t.Fatalf("Write error: %v", err)
+	}
+	err = r.MRead(ctx, []string{key1, key2}, &vals)
+	if err != nil {
+		t.Fatalf("Read error: %v\n", err)
+	}
+	// t.Logf("%s", vals)
+	_ = vals
+	keys, err := r.List(ctx)
 	if err != nil {
 		t.Fatalf("List error: %v\n", err)
 	}
+	_ = keys
+	// t.Logf("%v", keys)
+	err = r.Delete(ctx, key1)
+	if err != nil {
+		t.Fatalf("Delete error: %v\n", err)
+	}
+	err = r.Delete(ctx, key2)
+	if err != nil {
+		t.Fatalf("Delete error: %v\n", err)
+	}
 }
+
+/*
+func Test_MReadCodec(t *testing.T) {
+	type mytype struct {
+		Key string `json:"name"`
+		Val string `json:"val"`
+	}
+	ctx := context.Background()
+	var err error
+	if tr := os.Getenv("INTEGRATION_TESTS"); len(tr) > 0 {
+		t.Skip()
+	}
+	r := NewStore(store.Nodes(os.Getenv("STORE_NODES")), store.Codec(jsoncodec.NewCodec()))
+
+	if err = r.Init(); err != nil {
+		t.Fatal(err)
+	}
+	if err = r.Connect(ctx); err != nil {
+		t.Fatal(err)
+	}
+
+	key1 := "myTest1"
+	key2 := "myTest2"
+	key3 := "myTest3"
+	tval1 := &mytype{Key: "key1", Val: "val1"}
+	tval2 := &mytype{Key: "key2", Val: "val2"}
+	var vals []*mytype
+	err = r.Write(ctx, key1, tval1, store.WriteTTL(2*time.Minute))
+	if err != nil {
+		t.Fatalf("Write error: %v", err)
+	}
+	err = r.Write(ctx, key2, tval2, store.WriteTTL(2*time.Minute))
+	if err != nil {
+		t.Fatalf("Write error: %v", err)
+	}
+	err = r.MRead(ctx, []string{key1, key3, key2}, &vals)
+	if err != nil {
+		t.Fatalf("Read error: %v\n", err)
+	}
+	if vals[0].Key != "key1" || vals[1] != nil || vals[2].Key != "key2" {
+		t.Fatalf("read err: struct not filled")
+	}
+	keys, err := r.List(ctx)
+	if err != nil {
+		t.Fatalf("List error: %v\n", err)
+	}
+	_ = keys
+	err = r.Delete(ctx, key1)
+	if err != nil {
+		t.Fatalf("Delete error: %v\n", err)
+	}
+	err = r.Delete(ctx, key2)
+	if err != nil {
+		t.Fatalf("Delete error: %v\n", err)
+	}
+}
+*/

stats.go

@@ -0,0 +1,49 @@
+package redis
+
+import (
+	"time"
+
+	goredis "github.com/redis/go-redis/v9"
+	"go.unistack.org/micro/v3/meter"
+)
+
+var (
+	PoolHitsTotal        = "pool_hits_total"
+	PoolMissesTotal      = "pool_misses_total"
+	PoolTimeoutTotal     = "pool_timeout_total"
+	PoolConnTotalCurrent = "pool_conn_total_current"
+	PoolConnIdleCurrent  = "pool_conn_idle_current"
+	PoolConnStaleTotal   = "pool_conn_stale_total"
+)
+
+type Statser interface {
+	PoolStats() *goredis.PoolStats
+}
+
+func (r *Store) statsMeter() {
+	var st Statser
+
+	if r.cli != nil {
+		st = r.cli
+	} else {
+		return
+	}
+
+	go func() {
+		ticker := time.NewTicker(meter.DefaultMeterStatsInterval)
+		defer ticker.Stop()
+
+		for _ = range ticker.C {
+			if st == nil {
+				return
+			}
+			stats := st.PoolStats()
+			r.opts.Meter.Counter(PoolHitsTotal).Set(uint64(stats.Hits))
+			r.opts.Meter.Counter(PoolMissesTotal).Set(uint64(stats.Misses))
+			r.opts.Meter.Counter(PoolTimeoutTotal).Set(uint64(stats.Timeouts))
+			r.opts.Meter.Counter(PoolConnTotalCurrent).Set(uint64(stats.TotalConns))
+			r.opts.Meter.Counter(PoolConnIdleCurrent).Set(uint64(stats.IdleConns))
+			r.opts.Meter.Counter(PoolConnStaleTotal).Set(uint64(stats.StaleConns))
+		}
+	}()
+}

tracer.go

@@ -0,0 +1,128 @@
+package redis
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"strconv"
+
+	rediscmd "github.com/redis/go-redis/extra/rediscmd/v9"
+	goredis "github.com/redis/go-redis/v9"
+	"go.unistack.org/micro/v3/tracer"
+)
+
+func setTracing(rdb goredis.UniversalClient, tr tracer.Tracer, opts ...tracer.SpanOption) {
+	switch rdb := rdb.(type) {
+	case *goredis.Client:
+		opt := rdb.Options()
+		connString := formatDBConnString(opt.Network, opt.Addr)
+		rdb.AddHook(newTracingHook(connString, tr))
+	case *goredis.ClusterClient:
+		rdb.OnNewNode(func(rdb *goredis.Client) {
+			opt := rdb.Options()
+			connString := formatDBConnString(opt.Network, opt.Addr)
+			rdb.AddHook(newTracingHook(connString, tr))
+		})
+	case *goredis.Ring:
+		rdb.OnNewNode(func(rdb *goredis.Client) {
+			opt := rdb.Options()
+			connString := formatDBConnString(opt.Network, opt.Addr)
+			rdb.AddHook(newTracingHook(connString, tr))
+		})
+	}
+}
+
+type tracingHook struct {
+	tr   tracer.Tracer
+	opts []tracer.SpanOption
+}
+
+var _ goredis.Hook = (*tracingHook)(nil)
+
+func newTracingHook(connString string, tr tracer.Tracer, opts ...tracer.SpanOption) *tracingHook {
+	opts = append(opts, tracer.WithSpanKind(tracer.SpanKindClient))
+	if connString != "" {
+		opts = append(opts, tracer.WithSpanLabels("db.connection_string", connString))
+	}
+
+	return &tracingHook{
+		tr:   tr,
+		opts: opts,
+	}
+}
+
+func (h *tracingHook) DialHook(hook goredis.DialHook) goredis.DialHook {
+	return func(ctx context.Context, network, addr string) (net.Conn, error) {
+		/*
+			_, span := h.tr.Start(ctx, "goredis.dial", h.opts...)
+			defer span.Finish()
+		*/
+		conn, err := hook(ctx, network, addr)
+		// recordError(span, err)
+
+		return conn, err
+	}
+}
+
+func (h *tracingHook) ProcessHook(hook goredis.ProcessHook) goredis.ProcessHook {
+	return func(ctx context.Context, cmd goredis.Cmder) error {
+		cmdString := rediscmd.CmdString(cmd)
+		var err error
+
+		switch cmdString {
+		case "cluster slots":
+			break
+		default:
+			_, span := h.tr.Start(ctx, "sdk.database", append(h.opts, tracer.WithSpanLabels("db.statement", cmdString))...)
+			defer func() {
+				recordError(span, err)
+				span.Finish()
+			}()
+		}
+
+		err = hook(ctx, cmd)
+
+		return err
+	}
+}
+
+func (h *tracingHook) ProcessPipelineHook(hook goredis.ProcessPipelineHook) goredis.ProcessPipelineHook {
+	return func(ctx context.Context, cmds []goredis.Cmder) error {
+		_, cmdsString := rediscmd.CmdsString(cmds)
+
+		opts := append(h.opts, tracer.WithSpanLabels(
+			"db.database.num_cmd", strconv.Itoa(len(cmds)),
+			"db.statement", cmdsString,
+		))
+
+		_, span := h.tr.Start(ctx, "sdk.database", opts...)
+		defer span.Finish()
+
+		err := hook(ctx, cmds)
+		recordError(span, err)
+
+		return err
+	}
+}
+
+func setSpanError(ctx context.Context, err error) {
+	if err == nil || err == goredis.Nil {
+		return
+	}
+	if sp, ok := tracer.SpanFromContext(ctx); !ok && sp != nil {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+	}
+}
+
+func recordError(span tracer.Span, err error) {
+	if err != nil && err != goredis.Nil {
+		span.SetStatus(tracer.SpanStatusError, err.Error())
+	}
+}
+
+func formatDBConnString(network, addr string) string {
+	if network == "tcp" {
+		network = "redis"
+	}
+	return fmt.Sprintf("%s://%s", network, addr)
+}