rework cluster mode

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

go.mod

@@ -4,7 +4,7 @@ go 1.20
 
 require (
 	github.com/redis/go-redis/v9 v9.2.1
-	go.unistack.org/micro/v3 v3.10.28
+	go.unistack.org/micro/v3 v3.10.62
 )
 
 require (

go.sum

@@ -8,5 +8,5 @@ github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaR
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
 github.com/redis/go-redis/v9 v9.2.1 h1:WlYJg71ODF0dVspZZCpYmoF1+U1Jjk9Rwd7pq6QmlCg=
 github.com/redis/go-redis/v9 v9.2.1/go.mod h1:hdY0cQFCN4fnSYT6TkisLufl/4W5UIXyv0b/CLO2V2M=
-go.unistack.org/micro/v3 v3.10.28 h1:/87lGekrmi0/66pioy+Nh8lVUBBYnVqKoHiNYX5OmMI=
+go.unistack.org/micro/v3 v3.10.62 h1:PCwLSt3W53UGosH/5qU3kU0iJxK8jlKOm9p4v/Zti5o=
-go.unistack.org/micro/v3 v3.10.28/go.mod h1:eUgtvbtiiz6te93m0ZdmoecbitWwjdBmmr84srmEIKA=
+go.unistack.org/micro/v3 v3.10.62/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=

redis.go

@@ -7,31 +7,58 @@ import (
 	"strings"
 	"time"
 
-	"github.com/redis/go-redis/v9"
+	redis "github.com/redis/go-redis/v9"
+	"go.unistack.org/micro/v3/semconv"
 	"go.unistack.org/micro/v3/store"
+	"go.unistack.org/micro/v3/tracer"
+	pool "go.unistack.org/micro/v3/util/xpool"
+)
+
+var (
+	DefaultPathSeparator = "/"
+
+	DefaultClusterOptions = &redis.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 = &redis.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  *wrappedClient
+	pool pool.Pool[*strings.Builder]
 }
 
-type redisClient interface {
+type wrappedClient struct {
-	Get(ctx context.Context, key string) *redis.StringCmd
+	*redis.Client
-	Del(ctx context.Context, keys ...string) *redis.IntCmd
+	*redis.ClusterClient
-	Set(ctx context.Context, key string, value interface{}, expiration time.Duration) *redis.StatusCmd
-	Keys(ctx context.Context, pattern string) *redis.StringSliceCmd
-	MGet(ctx context.Context, keys ...string) *redis.SliceCmd
-	MSet(ctx context.Context, kv ...interface{}) *redis.StatusCmd
-	Exists(ctx context.Context, keys ...string) *redis.IntCmd
-	Ping(ctx context.Context) *redis.StatusCmd
-	Pipeline() redis.Pipeliner
-	Pipelined(ctx context.Context, fn func(redis.Pipeliner) error) ([]redis.Cmder, error)
-	Close() error
 }
 
 func (r *Store) Connect(ctx context.Context) error {
-	return r.cli.Ping(ctx).Err()
+	if r.cli.Client != nil {
+		return r.cli.Client.Ping(ctx).Err()
+	}
+	return r.cli.ClusterClient.Ping(ctx).Err()
 }
 
 func (r *Store) Init(opts ...store.Option) error {
@@ -42,93 +69,173 @@ func (r *Store) Init(opts ...store.Option) error {
 	return r.configure()
 }
 
-func (r *Store) Disconnect(ctx context.Context) error {
+func (r *Store) Client() *redis.Client {
-	return r.cli.Close()
+	if r.cli.Client != nil {
-}
+		return r.cli.Client
-
-func (r *Store) Exists(ctx context.Context, key string, opts ...store.ExistsOption) error {
-	if r.opts.Timeout > 0 {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, r.opts.Timeout)
-		defer cancel()
-	}
-	options := store.NewExistsOptions(opts...)
-	if len(options.Namespace) == 0 {
-		options.Namespace = r.opts.Namespace
-	}
-	if options.Namespace != "" {
-		key = fmt.Sprintf("%s%s", r.opts.Namespace, key)
-	}
-	val, err := r.cli.Exists(ctx, key).Result()
-	if err != nil {
-		return err
-	}
-	if val == 0 {
-		return store.ErrNotFound
 	}
 	return nil
 }
 
-func (r *Store) Read(ctx context.Context, key string, val interface{}, opts ...store.ReadOption) error {
+func (r *Store) ClusterClient() *redis.ClusterClient {
-	if r.opts.Timeout > 0 {
+	if r.cli.ClusterClient != nil {
-		var cancel context.CancelFunc
+		return r.cli.ClusterClient
-		ctx, cancel = context.WithTimeout(ctx, r.opts.Timeout)
-		defer cancel()
 	}
-	options := store.NewReadOptions(opts...)
+	return nil
-	if len(options.Namespace) == 0 {
-		options.Namespace = r.opts.Namespace
-	}
-	if options.Namespace != "" {
-		key = fmt.Sprintf("%s%s", options.Namespace, key)
 }
 
-	buf, err := r.cli.Get(ctx, key).Bytes()
+func (r *Store) Disconnect(ctx context.Context) error {
-	if err != nil && err == redis.Nil {
+	if r.cli.Client != nil {
+		return r.cli.Client.Close()
+	}
+	return r.cli.ClusterClient.Close()
+}
+
+func (r *Store) Exists(ctx context.Context, key string, opts ...store.ExistsOption) error {
+	options := store.NewExistsOptions(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()
+	}
+
+	rkey := r.getKey(r.opts.Namespace, options.Namespace, key)
+	ctx, sp := r.opts.Tracer.Start(ctx, "cache exists "+rkey)
+	defer sp.Finish()
+
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Inc()
+	ts := time.Now()
+	var err error
+	var val int64
+	if r.cli.Client != nil {
+		val, err = r.cli.Client.Exists(ctx, rkey).Result()
+	} else {
+		val, err = r.cli.ClusterClient.Exists(ctx, rkey).Result()
+	}
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.CacheRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.CacheRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == redis.Nil || (err == nil && val == 0) {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "miss").Inc()
 		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "hit").Inc()
 	} else if err != nil {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "failure").Inc()
 		return err
 	}
-	if buf == nil {
+
-		return store.ErrNotFound
+	return nil
 }
-	return r.opts.Codec.Unmarshal(buf, val)
+
+func (r *Store) Read(ctx context.Context, key string, val 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()
+	}
+
+	rkey := r.getKey(r.opts.Namespace, options.Namespace, key)
+	ctx, sp := r.opts.Tracer.Start(ctx, "cache read "+rkey)
+	defer sp.Finish()
+
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Inc()
+	ts := time.Now()
+	var buf []byte
+	var err error
+	if r.cli.Client != nil {
+		buf, err = r.cli.Client.Get(ctx, rkey).Bytes()
+	} else {
+		buf, err = r.cli.ClusterClient.Get(ctx, rkey).Bytes()
+	}
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.CacheRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.CacheRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == redis.Nil || (err == nil && buf == nil) {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "miss").Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "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 {
+			sp.SetStatus(tracer.SpanStatusError, err.Error())
+		}
+	}
+
+	return err
 }
 
 func (r *Store) MRead(ctx context.Context, keys []string, vals interface{}, opts ...store.ReadOption) error {
-	if len(keys) == 1 {
+	options := store.NewReadOptions(opts...)
-		vt := reflect.ValueOf(vals)
+
-		if vt.Kind() == reflect.Ptr {
+	timeout := r.opts.Timeout
-			vt = reflect.Indirect(vt)
+	if options.Timeout > 0 {
-			return r.Read(ctx, keys[0], vt.Index(0).Interface(), opts...)
+		timeout = options.Timeout
 	}
-	}
+
-	if r.opts.Timeout > 0 {
+	if timeout > 0 {
 		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, r.opts.Timeout)
+		ctx, cancel = context.WithTimeout(ctx, timeout)
 		defer cancel()
 	}
-	options := store.NewReadOptions(opts...)
+
-	rkeys := make([]string, 0, len(keys))
+	if r.opts.Namespace != "" || options.Namespace != "" {
-	if len(options.Namespace) == 0 {
+		for idx, key := range keys {
-		options.Namespace = r.opts.Namespace
+			keys[idx] = r.getKey(r.opts.Namespace, options.Namespace, key)
-	}
-	for _, key := range keys {
-		if options.Namespace != "" {
-			rkeys = append(rkeys, fmt.Sprintf("%s%s", options.Namespace, key))
-		} else {
-			rkeys = append(rkeys, key)
 		}
 	}
 
-	rvals, err := r.cli.MGet(ctx, rkeys...).Result()
+	ctx, sp := r.opts.Tracer.Start(ctx, fmt.Sprintf("cache mread %v", keys))
-	if err != nil && err == redis.Nil {
+	defer sp.Finish()
-		return store.ErrNotFound
+
-	} else if err != nil {
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Inc()
-		return err
+	ts := time.Now()
+	var rvals []interface{}
+	var err error
+	if r.cli.Client != nil {
+		rvals, err = r.cli.Client.MGet(ctx, keys...).Result()
+	} else {
+		rvals, err = r.cli.ClusterClient.MGet(ctx, keys...).Result()
 	}
-	if len(rvals) == 0 {
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.CacheRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.CacheRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == redis.Nil || (len(rvals) == 0) {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "miss").Inc()
 		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "failure").Inc()
+		return err
 	}
 
 	vv := reflect.ValueOf(vals)
@@ -159,77 +266,137 @@ func (r *Store) MRead(ctx context.Context, keys []string, vals interface{}, opts
 		// 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)))
-		} else {
+			itm.SetBytes(buf)
-			itm.Set(reflect.New(vt.Elem()))
+			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 {
+			sp.SetStatus(tracer.SpanStatusError, err.Error())
 			return err
 		}
 	}
 	vv.Set(nvv)
+
 	return nil
 }
 
 func (r *Store) MDelete(ctx context.Context, keys []string, opts ...store.DeleteOption) error {
-	if len(keys) == 1 {
+	options := store.NewDeleteOptions(opts...)
-		return r.Delete(ctx, keys[0], opts...)
+
+	timeout := r.opts.Timeout
+	if options.Timeout > 0 {
+		timeout = options.Timeout
 	}
-	if r.opts.Timeout > 0 {
+
+	if timeout > 0 {
 		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, r.opts.Timeout)
+		ctx, cancel = context.WithTimeout(ctx, timeout)
 		defer cancel()
 	}
-	options := store.NewDeleteOptions(opts...)
+
-	if len(options.Namespace) == 0 {
+	if r.opts.Namespace != "" || options.Namespace != "" {
-		options.Namespace = r.opts.Namespace
+		for idx, key := range keys {
+			keys[idx] = r.getKey(r.opts.Namespace, options.Namespace, key)
 		}
-	if options.Namespace == "" {
-		return r.cli.Del(ctx, keys...).Err()
 	}
-	for idx := range keys {
+
-		keys[idx] = options.Namespace + keys[idx]
+	ctx, sp := r.opts.Tracer.Start(ctx, fmt.Sprintf("cache mdelete %v", keys))
+	defer sp.Finish()
+
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Inc()
+	ts := time.Now()
+	var err error
+	if r.cli.Client != nil {
+		err = r.cli.Client.Del(ctx, keys...).Err()
+	} else {
+		err = r.cli.ClusterClient.Del(ctx, keys...).Err()
 	}
-	return r.cli.Del(ctx, keys...).Err()
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.CacheRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.CacheRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == redis.Nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "miss").Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "failure").Inc()
+		return err
+	}
+
+	return nil
 }
 
 func (r *Store) Delete(ctx context.Context, key string, opts ...store.DeleteOption) error {
-	if r.opts.Timeout > 0 {
+	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, r.opts.Timeout)
+		ctx, cancel = context.WithTimeout(ctx, timeout)
 		defer cancel()
 	}
-	options := store.NewDeleteOptions(opts...)
+
-	if len(options.Namespace) == 0 {
+	ctx, sp := r.opts.Tracer.Start(ctx, fmt.Sprintf("cache delete %v", key))
-		options.Namespace = r.opts.Namespace
+	defer sp.Finish()
+
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Inc()
+	ts := time.Now()
+	var err error
+	if r.cli.Client != nil {
+		err = r.cli.Client.Del(ctx, r.getKey(r.opts.Namespace, options.Namespace, key)).Err()
+	} else {
+		err = r.cli.ClusterClient.Del(ctx, r.getKey(r.opts.Namespace, options.Namespace, key)).Err()
 	}
-	if options.Namespace == "" {
+	te := time.Since(ts)
-		return r.cli.Del(ctx, key).Err()
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.CacheRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.CacheRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == redis.Nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "miss").Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "failure").Inc()
+		return err
 	}
-	return r.cli.Del(ctx, fmt.Sprintf("%s%s", options.Namespace, key)).Err()
+
+	return nil
 }
 
 func (r *Store) MWrite(ctx context.Context, keys []string, vals []interface{}, opts ...store.WriteOption) error {
-	if len(keys) == 1 {
+	options := store.NewWriteOptions(opts...)
-		return r.Write(ctx, keys[0], vals[0], opts...)
+
+	timeout := r.opts.Timeout
+	if options.Timeout > 0 {
+		timeout = options.Timeout
 	}
-	if r.opts.Timeout > 0 {
+
+	if timeout > 0 {
 		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, r.opts.Timeout)
+		ctx, cancel = context.WithTimeout(ctx, timeout)
 		defer cancel()
 	}
-	options := store.NewWriteOptions(opts...)
+
+	ctx, sp := r.opts.Tracer.Start(ctx, fmt.Sprintf("cache mwrite %v", keys))
+	defer sp.Finish()
+
 	kvs := make([]string, 0, len(keys)*2)
 
-	if len(options.Namespace) == 0 {
-		options.Namespace = r.opts.Namespace
-	}
-
 	for idx, key := range keys {
-		if options.Namespace != "" {
+		kvs = append(kvs, r.getKey(r.opts.Namespace, options.Namespace, key))
-			kvs = append(kvs, fmt.Sprintf("%s%s", options.Namespace, key))
-		} else {
-			kvs = append(kvs, key)
-		}
 
 		switch vt := vals[idx].(type) {
 		case string:
@@ -239,24 +406,57 @@ func (r *Store) MWrite(ctx context.Context, keys []string, vals []interface{}, o
 		default:
 			buf, err := r.opts.Codec.Marshal(vt)
 			if err != nil {
+				sp.SetStatus(tracer.SpanStatusError, err.Error())
 				return err
 			}
 			kvs = append(kvs, string(buf))
 		}
 	}
 
-	cmds, err := r.cli.Pipelined(ctx, func(pipe redis.Pipeliner) error {
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Inc()
+	ts := time.Now()
+
+	pipeliner := func(pipe redis.Pipeliner) error {
 		for idx := 0; idx < len(kvs); idx += 2 {
-			pipe.Set(ctx, kvs[idx], kvs[idx+1], options.TTL).Result()
+			if _, err := pipe.Set(ctx, kvs[idx], kvs[idx+1], options.TTL).Result(); err != nil {
+				return err
+			}
 		}
 		return nil
-	})
+	}
-	if err != nil {
+
+	var err error
+	var cmds []redis.Cmder
+
+	if r.cli.Client != nil {
+		cmds, err = r.cli.Client.Pipelined(ctx, pipeliner)
+	} else {
+		cmds, err = r.cli.ClusterClient.Pipelined(ctx, pipeliner)
+	}
+
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.CacheRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.CacheRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == redis.Nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "miss").Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "failure").Inc()
 		return err
 	}
 
 	for _, cmd := range cmds {
 		if err = cmd.Err(); err != nil {
+			if err == redis.Nil {
+				r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "miss").Inc()
+				return store.ErrNotFound
+			}
+			sp.SetStatus(tracer.SpanStatusError, err.Error())
+			r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "failure").Inc()
 			return err
 		}
 	}
@@ -265,16 +465,22 @@ func (r *Store) MWrite(ctx context.Context, keys []string, vals []interface{}, o
 }
 
 func (r *Store) Write(ctx context.Context, key string, val interface{}, opts ...store.WriteOption) error {
-	if r.opts.Timeout > 0 {
+	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, r.opts.Timeout)
+		ctx, cancel = context.WithTimeout(ctx, timeout)
 		defer cancel()
 	}
 
-	options := store.NewWriteOptions(opts...)
+	rkey := r.getKey(r.opts.Namespace, options.Namespace, key)
-	if len(options.Namespace) == 0 {
+	ctx, sp := r.opts.Tracer.Start(ctx, fmt.Sprintf("cache write %v", rkey))
-		options.Namespace = r.opts.Namespace
+	defer sp.Finish()
-	}
 
 	var buf []byte
 	switch vt := val.(type) {
@@ -286,15 +492,35 @@ func (r *Store) Write(ctx context.Context, key string, val interface{}, opts ...
 		var err error
 		buf, err = r.opts.Codec.Marshal(val)
 		if err != nil {
+			sp.SetStatus(tracer.SpanStatusError, err.Error())
 			return err
 		}
 	}
 
-	if options.Namespace != "" {
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Inc()
-		key = fmt.Sprintf("%s%s", options.Namespace, key)
+	ts := time.Now()
+	var err error
+	if r.cli.Client != nil {
+		err = r.cli.Client.Set(ctx, rkey, buf, options.TTL).Err()
+	} else {
+		err = r.cli.ClusterClient.Set(ctx, rkey, buf, options.TTL).Err()
+	}
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.CacheRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.CacheRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == redis.Nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "miss").Inc()
+		return store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "failure").Inc()
+		return err
 	}
 
-	return r.cli.Set(ctx, key, buf, options.TTL).Err()
+	return err
 }
 
 func (r *Store) List(ctx context.Context, opts ...store.ListOption) ([]string, error) {
@@ -303,29 +529,71 @@ func (r *Store) List(ctx context.Context, opts ...store.ListOption) ([]string, e
 		options.Namespace = r.opts.Namespace
 	}
 
-	rkey := fmt.Sprintf("%s%s*", options.Namespace, options.Prefix)
+	rkey := r.getKey(options.Namespace, "", options.Prefix+"*")
 	if options.Suffix != "" {
 		rkey += options.Suffix
 	}
-	if r.opts.Timeout > 0 {
+
+	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()
 	}
+
+	ctx, sp := r.opts.Tracer.Start(ctx, fmt.Sprintf("cache list %v", rkey))
+	defer sp.Finish()
+
 	// TODO: add support for prefix/suffix/limit
-	keys, err := r.cli.Keys(ctx, rkey).Result()
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Inc()
-	if err != nil {
+	ts := time.Now()
+	var keys []string
+	var err error
+
+	if r.cli.Client != nil {
+		keys, err = r.cli.Client.Keys(ctx, rkey).Result()
+	} else {
+		err = r.cli.ClusterClient.ForEachMaster(ctx, func(nctx context.Context, cli *redis.Client) error {
+			nkeys, nerr := cli.Keys(nctx, rkey).Result()
+			if nerr != nil {
+				return nerr
+			}
+			keys = append(keys, nkeys...)
+			return nil
+		})
+	}
+	te := time.Since(ts)
+	r.opts.Meter.Counter(semconv.CacheRequestInflight, "name", options.Name).Dec()
+	r.opts.Meter.Summary(semconv.CacheRequestLatencyMicroseconds, "name", options.Name).Update(te.Seconds())
+	r.opts.Meter.Histogram(semconv.CacheRequestDurationSeconds, "name", options.Name).Update(te.Seconds())
+	if err == redis.Nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "miss").Inc()
+		return nil, store.ErrNotFound
+	} else if err == nil {
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "hit").Inc()
+	} else if err != nil {
+		sp.SetStatus(tracer.SpanStatusError, err.Error())
+		r.opts.Meter.Counter(semconv.CacheRequestTotal, "name", options.Name, "status", "failure").Inc()
 		return nil, err
 	}
-	if options.Namespace == "" {
+
+	prefix := r.opts.Namespace
+	if options.Namespace != "" {
+		prefix = options.Namespace
+	}
+	if prefix == "" {
 		return keys, nil
 	}
 
-	nkeys := make([]string, 0, len(keys))
+	for idx, key := range keys {
-	for _, key := range keys {
+		keys[idx] = strings.TrimPrefix(key, prefix)
-		nkeys = append(nkeys, strings.TrimPrefix(key, options.Namespace))
 	}
-	return nkeys, nil
+
+	return keys, nil
 }
 
 func (r *Store) Options() store.Options {
@@ -386,43 +654,38 @@ func (r *Store) configure() error {
 	if redisOptions == nil && redisClusterOptions == nil && len(nodes) == 1 {
 		redisOptions, err = redis.ParseURL(nodes[0])
 		if err != nil {
-			// Backwards compatibility
+			redisOptions = DefaultOptions
-			redisOptions = &redis.Options{
+			redisOptions.Addr = r.opts.Addrs[0]
-				Addr:            nodes[0],
+			redisOptions.TLSConfig = r.opts.TLSConfig
-				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,
-				TLSConfig:       r.opts.TLSConfig,
-			}
 		}
 	} else if redisOptions == nil && redisClusterOptions == nil && len(nodes) > 1 {
-		redisClusterOptions = &redis.ClusterOptions{
+		redisClusterOptions = DefaultClusterOptions
-			Addrs:           nodes,
+		redisClusterOptions.Addrs = r.opts.Addrs
-			Username:        "",
+		redisClusterOptions.TLSConfig = r.opts.TLSConfig
-			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,
-			TLSConfig:       r.opts.TLSConfig,
-		}
 	}
 
 	if redisOptions != nil {
-		r.cli = redis.NewClient(redisOptions)
+		r.cli = &wrappedClient{Client: redis.NewClient(redisOptions)}
 	} else if redisClusterOptions != nil {
-		r.cli = redis.NewClusterClient(redisClusterOptions)
+		r.cli = &wrappedClient{ClusterClient: redis.NewClusterClient(redisClusterOptions)}
 	}
 
+	r.pool = pool.NewPool(func() *strings.Builder { return &strings.Builder{} })
 	return nil
 }
+
+func (r *Store) getKey(mainNamespace string, opNamespace string, key string) string {
+	b := r.pool.Get()
+	defer r.pool.Put(b)
+	b.Reset()
+
+	if opNamespace == "" {
+		opNamespace = mainNamespace
+	}
+	if opNamespace != "" {
+		b.WriteString(opNamespace)
+		b.WriteString(DefaultPathSeparator)
+	}
+	b.WriteString(key)
+	return b.String()
+}

redis_test.go

@@ -7,14 +7,13 @@ import (
 	"testing"
 	"time"
 
-	"github.com/redis/go-redis/v9"
 	"go.unistack.org/micro/v3/store"
 )
 
 func Test_rkv_configure(t *testing.T) {
 	type fields struct {
 		options store.Options
-		Client  *redis.Client
+		Client  *wrappedClient
 	}
 	type wantValues struct {
 		username string
@@ -71,11 +70,11 @@ 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