Tweak number of retries

CHANGELOG.md

@@ -26,6 +26,9 @@ ring := redis.NewRing(&redis.RingOptions{
 })
 ```
 
+- `ClusterOptions.MaxRedirects` default value is changed from 8 to 3.
+- `Options.MaxRetries` default value is changed from 0 to 3.
+
 - `Cluster.ForEachNode` is renamed to `ForEachShard` for consistency with `Ring`.
 
 ## v7.3

cluster.go

@@ -32,7 +32,7 @@ type ClusterOptions struct {
 
 	// The maximum number of retries before giving up. Command is retried
 	// on network errors and MOVED/ASK redirects.
-	// Default is 8 retries.
+	// Default is 3 retries.
 	MaxRedirects int
 
 	// Enables read-only commands on slave nodes.
@@ -83,7 +83,7 @@ func (opt *ClusterOptions) init() {
 	if opt.MaxRedirects == -1 {
 		opt.MaxRedirects = 0
 	} else if opt.MaxRedirects == 0 {
-		opt.MaxRedirects = 8
+		opt.MaxRedirects = 3
 	}
 
 	if (opt.RouteByLatency || opt.RouteRandomly) && opt.ClusterSlots == nil {
@@ -107,6 +107,9 @@ func (opt *ClusterOptions) init() {
 		opt.WriteTimeout = opt.ReadTimeout
 	}
 
+	if opt.MaxRetries == 0 {
+		opt.MaxRetries = -1
+	}
 	switch opt.MinRetryBackoff {
 	case -1:
 		opt.MinRetryBackoff = 0
@@ -132,12 +135,12 @@ func (opt *ClusterOptions) clientOptions() *Options {
 		Dialer:    opt.Dialer,
 		OnConnect: opt.OnConnect,
 
+		Username: opt.Username,
+		Password: opt.Password,
+
 		MaxRetries:      opt.MaxRetries,
 		MinRetryBackoff: opt.MinRetryBackoff,
 		MaxRetryBackoff: opt.MaxRetryBackoff,
-		Username:        opt.Username,
-		Password:        opt.Password,
-		readOnly:        opt.ReadOnly,
 
 		DialTimeout:  opt.DialTimeout,
 		ReadTimeout:  opt.ReadTimeout,
@@ -150,6 +153,8 @@ func (opt *ClusterOptions) clientOptions() *Options {
 		IdleTimeout:        opt.IdleTimeout,
 		IdleCheckFrequency: disableIdleCheck,
 
+		readOnly: opt.ReadOnly,
+
 		TLSConfig: opt.TLSConfig,
 	}
 }

main_test.go

@@ -123,9 +123,13 @@ func redisOptions() *redis.Options {
 	return &redis.Options{
 		Addr: redisAddr,
 		DB:   15,
+
 		DialTimeout:  10 * time.Second,
 		ReadTimeout:  30 * time.Second,
 		WriteTimeout: 30 * time.Second,
+
+		MaxRetries: -1,
+
 		PoolSize:           10,
 		PoolTimeout:        30 * time.Second,
 		IdleTimeout:        time.Minute,
@@ -138,6 +142,9 @@ func redisClusterOptions() *redis.ClusterOptions {
 		DialTimeout:  10 * time.Second,
 		ReadTimeout:  30 * time.Second,
 		WriteTimeout: 30 * time.Second,
+
+		MaxRedirects: 8,
+
 		PoolSize:           10,
 		PoolTimeout:        30 * time.Second,
 		IdleTimeout:        time.Minute,
@@ -151,9 +158,13 @@ func redisRingOptions() *redis.RingOptions {
 			"ringShardOne": ":" + ringShard1Port,
 			"ringShardTwo": ":" + ringShard2Port,
 		},
+
 		DialTimeout:  10 * time.Second,
 		ReadTimeout:  30 * time.Second,
 		WriteTimeout: 30 * time.Second,
+
+		MaxRetries: -1,
+
 		PoolSize:           10,
 		PoolTimeout:        30 * time.Second,
 		IdleTimeout:        time.Minute,
@@ -234,6 +245,7 @@ func execCmd(name string, args ...string) (*os.Process, error) {
 func connectTo(port string) (*redis.Client, error) {
 	client := redis.NewClient(&redis.Options{
 		Addr:       ":" + port,
+		MaxRetries: -1,
 	})
 
 	err := eventually(func() error {

options.go

@@ -57,7 +57,7 @@ type Options struct {
 	DB int
 
 	// Maximum number of retries before giving up.
-	// Default is to not retry failed commands.
+	// Default is 3 retries.
 	MaxRetries int
 	// Minimum backoff between each retry.
 	// Default is 8 milliseconds; -1 disables backoff.
@@ -164,6 +164,8 @@ func (opt *Options) init() {
 
 	if opt.MaxRetries == -1 {
 		opt.MaxRetries = 0
+	} else if opt.MaxRetries == 0 {
+		opt.MaxRetries = 3
 	}
 	switch opt.MinRetryBackoff {
 	case -1:

redis_test.go

@@ -215,7 +215,7 @@ var _ = Describe("Client", func() {
 	It("should retry with backoff", func() {
 		clientNoRetry := redis.NewClient(&redis.Options{
 			Addr:       ":1234",
-			MaxRetries: 0,
+			MaxRetries: -1,
 		})
 		defer clientNoRetry.Close()
 

ring.go

@@ -2,6 +2,7 @@ package redis
 
 import (
 	"context"
+	"crypto/tls"
 	"errors"
 	"fmt"
 	"net"
@@ -84,6 +85,9 @@ type RingOptions struct {
 	PoolTimeout        time.Duration
 	IdleTimeout        time.Duration
 	IdleCheckFrequency time.Duration
+
+	TLSConfig *tls.Config
+	Limiter   Limiter
 }
 
 func (opt *RingOptions) init() {
@@ -101,6 +105,11 @@ func (opt *RingOptions) init() {
 		opt.NewConsistentHash = newRendezvous
 	}
 
+	if opt.MaxRetries == -1 {
+		opt.MaxRetries = 0
+	} else if opt.MaxRetries == 0 {
+		opt.MaxRetries = 3
+	}
 	switch opt.MinRetryBackoff {
 	case -1:
 		opt.MinRetryBackoff = 0
@@ -124,6 +133,8 @@ func (opt *RingOptions) clientOptions() *Options {
 		Password: opt.Password,
 		DB:       opt.DB,
 
+		MaxRetries: -1,
+
 		DialTimeout:  opt.DialTimeout,
 		ReadTimeout:  opt.ReadTimeout,
 		WriteTimeout: opt.WriteTimeout,
@@ -134,6 +145,9 @@ func (opt *RingOptions) clientOptions() *Options {
 		PoolTimeout:        opt.PoolTimeout,
 		IdleTimeout:        opt.IdleTimeout,
 		IdleCheckFrequency: opt.IdleCheckFrequency,
+
+		TLSConfig: opt.TLSConfig,
+		Limiter:   opt.Limiter,
 	}
 }
 

sentinel.go

@@ -56,8 +56,8 @@ type FailoverOptions struct {
 	TLSConfig *tls.Config
 }
 
-func (opt *FailoverOptions) options() *Options {
+func (opt *FailoverOptions) clientOptions() *Options {
-	redisOpt := &Options{
+	return &Options{
 		Addr: "FailoverClient",
 
 		Dialer:    opt.Dialer,
@@ -84,17 +84,17 @@ func (opt *FailoverOptions) options() *Options {
 
 		TLSConfig: opt.TLSConfig,
 	}
-	redisOpt.init()
-	return redisOpt
 }
 
-func (opt *FailoverOptions) clusterOptions() *ClusterOptions {
+func (opt *FailoverOptions) sentinelOptions(addr string) *Options {
-	clusterOpt := &ClusterOptions{
+	return &Options{
+		Addr: addr,
+
 		Dialer:    opt.Dialer,
 		OnConnect: opt.OnConnect,
 
-		Username: opt.Username,
+		DB:       0,
-		Password: opt.Password,
+		Password: opt.SentinelPassword,
 
 		MaxRetries:      opt.MaxRetries,
 		MinRetryBackoff: opt.MinRetryBackoff,
@@ -113,24 +113,50 @@ func (opt *FailoverOptions) clusterOptions() *ClusterOptions {
 
 		TLSConfig: opt.TLSConfig,
 	}
-	clusterOpt.init()
+}
-	return clusterOpt
+
+func (opt *FailoverOptions) clusterOptions() *ClusterOptions {
+	return &ClusterOptions{
+		Dialer:    opt.Dialer,
+		OnConnect: opt.OnConnect,
+
+		Username: opt.Username,
+		Password: opt.Password,
+
+		MaxRedirects:    opt.MaxRetries,
+		MinRetryBackoff: opt.MinRetryBackoff,
+		MaxRetryBackoff: opt.MaxRetryBackoff,
+
+		DialTimeout:  opt.DialTimeout,
+		ReadTimeout:  opt.ReadTimeout,
+		WriteTimeout: opt.WriteTimeout,
+
+		PoolSize:           opt.PoolSize,
+		PoolTimeout:        opt.PoolTimeout,
+		IdleTimeout:        opt.IdleTimeout,
+		IdleCheckFrequency: opt.IdleCheckFrequency,
+		MinIdleConns:       opt.MinIdleConns,
+		MaxConnAge:         opt.MaxConnAge,
+
+		TLSConfig: opt.TLSConfig,
+	}
 }
 
 // NewFailoverClient returns a Redis client that uses Redis Sentinel
 // for automatic failover. It's safe for concurrent use by multiple
 // goroutines.
 func NewFailoverClient(failoverOpt *FailoverOptions) *Client {
-	failover := &sentinelFailover{
+	sentinelAddrs := make([]string, len(failoverOpt.SentinelAddrs))
-		masterName:       failoverOpt.MasterName,
+	copy(sentinelAddrs, failoverOpt.SentinelAddrs)
-		sentinelAddrs:    failoverOpt.SentinelAddrs,
-		sentinelPassword: failoverOpt.SentinelPassword,
 
-		opt: failoverOpt.options(),
+	failover := &sentinelFailover{
+		opt:           failoverOpt,
+		sentinelAddrs: sentinelAddrs,
 	}
 
-	opt := failoverOpt.options()
+	opt := failoverOpt.clientOptions()
-	opt.Dialer = masterSlaveDialer(failover, failoverOpt.SlaveOnly)
+	opt.Dialer = masterSlaveDialer(failover)
+	opt.init()
 
 	connPool := newConnPool(opt)
 	failover.onFailover = func(ctx context.Context, addr string) {
@@ -150,13 +176,13 @@ func NewFailoverClient(failoverOpt *FailoverOptions) *Client {
 }
 
 func masterSlaveDialer(
-	failover *sentinelFailover, slaveOnly bool,
+	failover *sentinelFailover,
 ) func(ctx context.Context, network, addr string) (net.Conn, error) {
 	return func(ctx context.Context, network, _ string) (net.Conn, error) {
 		var addr string
 		var err error
 
-		if slaveOnly {
+		if failover.opt.SlaveOnly {
 			addr, err = failover.RandomSlaveAddr(ctx)
 		} else {
 			addr, err = failover.MasterAddr(ctx)
@@ -349,14 +375,12 @@ func (c *SentinelClient) Remove(ctx context.Context, name string) *StringCmd {
 //------------------------------------------------------------------------------
 
 type sentinelFailover struct {
-	sentinelAddrs    []string
+	opt *FailoverOptions
-	sentinelPassword string
 
-	opt        *Options
+	sentinelAddrs []string
 	onFailover    func(ctx context.Context, addr string)
 
 	mu          sync.RWMutex
-	masterName  string
 	_masterAddr string
 	sentinel    *SentinelClient
 	pubsub      *PubSub
@@ -419,31 +443,12 @@ func (c *sentinelFailover) MasterAddr(ctx context.Context) (string, error) {
 	}
 
 	for i, sentinelAddr := range c.sentinelAddrs {
-		sentinel := NewSentinelClient(&Options{
+		sentinel := NewSentinelClient(c.opt.sentinelOptions(sentinelAddr))
-			Addr:   sentinelAddr,
-			Dialer: c.opt.Dialer,
 
-			Username: c.opt.Username,
+		masterAddr, err := sentinel.GetMasterAddrByName(ctx, c.opt.MasterName).Result()
-			Password: c.opt.Password,
-
-			MaxRetries: c.opt.MaxRetries,
-
-			DialTimeout:  c.opt.DialTimeout,
-			ReadTimeout:  c.opt.ReadTimeout,
-			WriteTimeout: c.opt.WriteTimeout,
-
-			PoolSize:           c.opt.PoolSize,
-			PoolTimeout:        c.opt.PoolTimeout,
-			IdleTimeout:        c.opt.IdleTimeout,
-			IdleCheckFrequency: c.opt.IdleCheckFrequency,
-
-			TLSConfig: c.opt.TLSConfig,
-		})
-
-		masterAddr, err := sentinel.GetMasterAddrByName(ctx, c.masterName).Result()
 		if err != nil {
 			internal.Logger.Printf(ctx, "sentinel: GetMasterAddrByName master=%q failed: %s",
-				c.masterName, err)
+				c.opt.MasterName, err)
 			_ = sentinel.Close()
 			continue
 		}
@@ -483,31 +488,12 @@ func (c *sentinelFailover) slaveAddresses(ctx context.Context) ([]string, error)
 	}
 
 	for i, sentinelAddr := range c.sentinelAddrs {
-		sentinel := NewSentinelClient(&Options{
+		sentinel := NewSentinelClient(c.opt.sentinelOptions(sentinelAddr))
-			Addr:   sentinelAddr,
-			Dialer: c.opt.Dialer,
 
-			Username: c.opt.Username,
+		slaves, err := sentinel.Slaves(ctx, c.opt.MasterName).Result()
-			Password: c.opt.Password,
-
-			MaxRetries: c.opt.MaxRetries,
-
-			DialTimeout:  c.opt.DialTimeout,
-			ReadTimeout:  c.opt.ReadTimeout,
-			WriteTimeout: c.opt.WriteTimeout,
-
-			PoolSize:           c.opt.PoolSize,
-			PoolTimeout:        c.opt.PoolTimeout,
-			IdleTimeout:        c.opt.IdleTimeout,
-			IdleCheckFrequency: c.opt.IdleCheckFrequency,
-
-			TLSConfig: c.opt.TLSConfig,
-		})
-
-		slaves, err := sentinel.Slaves(ctx, c.masterName).Result()
 		if err != nil {
 			internal.Logger.Printf(ctx, "sentinel: Slaves master=%q failed: %s",
-				c.masterName, err)
+				c.opt.MasterName, err)
 			_ = sentinel.Close()
 			continue
 		}
@@ -524,20 +510,20 @@ func (c *sentinelFailover) slaveAddresses(ctx context.Context) ([]string, error)
 }
 
 func (c *sentinelFailover) getMasterAddr(ctx context.Context, sentinel *SentinelClient) string {
-	addr, err := sentinel.GetMasterAddrByName(ctx, c.masterName).Result()
+	addr, err := sentinel.GetMasterAddrByName(ctx, c.opt.MasterName).Result()
 	if err != nil {
 		internal.Logger.Printf(ctx, "sentinel: GetMasterAddrByName name=%q failed: %s",
-			c.masterName, err)
+			c.opt.MasterName, err)
 		return ""
 	}
 	return net.JoinHostPort(addr[0], addr[1])
 }
 
 func (c *sentinelFailover) getSlaveAddrs(ctx context.Context, sentinel *SentinelClient) []string {
-	addrs, err := sentinel.Slaves(ctx, c.masterName).Result()
+	addrs, err := sentinel.Slaves(ctx, c.opt.MasterName).Result()
 	if err != nil {
 		internal.Logger.Printf(ctx, "sentinel: Slaves name=%q failed: %s",
-			c.masterName, err)
+			c.opt.MasterName, err)
 		return []string{}
 	}
 
@@ -597,7 +583,7 @@ func (c *sentinelFailover) trySwitchMaster(ctx context.Context, addr string) {
 	c._masterAddr = addr
 
 	internal.Logger.Printf(ctx, "sentinel: new master=%q addr=%q",
-		c.masterName, addr)
+		c.opt.MasterName, addr)
 	go c.onFailover(ctx, addr)
 }
 
@@ -613,9 +599,9 @@ func (c *sentinelFailover) setSentinel(ctx context.Context, sentinel *SentinelCl
 }
 
 func (c *sentinelFailover) discoverSentinels(ctx context.Context) {
-	sentinels, err := c.sentinel.Sentinels(ctx, c.masterName).Result()
+	sentinels, err := c.sentinel.Sentinels(ctx, c.opt.MasterName).Result()
 	if err != nil {
-		internal.Logger.Printf(ctx, "sentinel: Sentinels master=%q failed: %s", c.masterName, err)
+		internal.Logger.Printf(ctx, "sentinel: Sentinels master=%q failed: %s", c.opt.MasterName, err)
 		return
 	}
 	for _, sentinel := range sentinels {
@@ -626,7 +612,7 @@ func (c *sentinelFailover) discoverSentinels(ctx context.Context) {
 				sentinelAddr := vals[i+1].(string)
 				if !contains(c.sentinelAddrs, sentinelAddr) {
 					internal.Logger.Printf(ctx, "sentinel: discovered new sentinel=%q for master=%q",
-						sentinelAddr, c.masterName)
+						sentinelAddr, c.opt.MasterName)
 					c.sentinelAddrs = append(c.sentinelAddrs, sentinelAddr)
 				}
 			}
@@ -644,7 +630,7 @@ func (c *sentinelFailover) listen(pubsub *PubSub) {
 
 		if msg.Channel == "+switch-master" {
 			parts := strings.Split(msg.Payload, " ")
-			if parts[0] != c.masterName {
+			if parts[0] != c.opt.MasterName {
 				internal.Logger.Printf(pubsub.getContext(), "sentinel: ignore addr for master=%q", parts[0])
 				continue
 			}
@@ -666,15 +652,15 @@ func contains(slice []string, str string) bool {
 //------------------------------------------------------------------------------
 
 func NewFailoverClusterClient(failoverOpt *FailoverOptions) *ClusterClient {
-	failover := &sentinelFailover{
+	sentinelAddrs := make([]string, len(failoverOpt.SentinelAddrs))
-		masterName:    failoverOpt.MasterName,
+	copy(sentinelAddrs, failoverOpt.SentinelAddrs)
-		sentinelAddrs: failoverOpt.SentinelAddrs,
 
-		opt: failoverOpt.options(),
+	failover := &sentinelFailover{
+		opt:           failoverOpt,
+		sentinelAddrs: sentinelAddrs,
 	}
 
 	opt := failoverOpt.clusterOptions()
-
 	opt.ClusterSlots = func(ctx context.Context) ([]ClusterSlot, error) {
 		masterAddr, err := failover.MasterAddr(ctx)
 		if err != nil {

sentinel_test.go

@@ -18,11 +18,13 @@ var _ = Describe("Sentinel", func() {
 		client = redis.NewFailoverClient(&redis.FailoverOptions{
 			MasterName:    sentinelName,
 			SentinelAddrs: sentinelAddrs,
+			MaxRetries:    -1,
 		})
 		Expect(client.FlushDB(ctx).Err()).NotTo(HaveOccurred())
 
 		sentinel := redis.NewSentinelClient(&redis.Options{
 			Addr:       ":" + sentinelPort1,
+			MaxRetries: -1,
 		})
 
 		addr, err := sentinel.GetMasterAddrByName(ctx, sentinelName).Result()
@@ -30,8 +32,20 @@ var _ = Describe("Sentinel", func() {
 
 		master = redis.NewClient(&redis.Options{
 			Addr:       net.JoinHostPort(addr[0], addr[1]),
+			MaxRetries: -1,
 		})
 		masterPort = addr[1]
+
+		// Wait until slaves are picked up by sentinel.
+		Eventually(func() string {
+			return sentinel1.Info(ctx).Val()
+		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
+		Eventually(func() string {
+			return sentinel2.Info(ctx).Val()
+		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
+		Eventually(func() string {
+			return sentinel3.Info(ctx).Val()
+		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
 	})
 
 	AfterEach(func() {
@@ -52,25 +66,6 @@ var _ = Describe("Sentinel", func() {
 		// Create subscription.
 		ch := client.Subscribe(ctx, "foo").Channel()
 
-		// Wait until replicated.
-		Eventually(func() string {
-			return sentinelSlave1.Get(ctx, "foo").Val()
-		}, "15s", "100ms").Should(Equal("master"))
-		Eventually(func() string {
-			return sentinelSlave2.Get(ctx, "foo").Val()
-		}, "15s", "100ms").Should(Equal("master"))
-
-		// Wait until slaves are picked up by sentinel.
-		Eventually(func() string {
-			return sentinel1.Info(ctx).Val()
-		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
-		Eventually(func() string {
-			return sentinel2.Info(ctx).Val()
-		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
-		Eventually(func() string {
-			return sentinel3.Info(ctx).Val()
-		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
-
 		// Kill master.
 		err = master.Shutdown(ctx).Err()
 		Expect(err).NotTo(HaveOccurred())
@@ -79,9 +74,9 @@ var _ = Describe("Sentinel", func() {
 		}, "15s", "100ms").Should(HaveOccurred())
 
 		// Check that client picked up new master.
-		Eventually(func() error {
+		Eventually(func() string {
-			return client.Get(ctx, "foo").Err()
+			return client.Get(ctx, "foo").Val()
-		}, "15s", "100ms").ShouldNot(HaveOccurred())
+		}, "15s", "100ms").Should(Equal("master"))
 
 		// Check if subscription is renewed.
 		var msg *redis.Message
@@ -123,6 +118,7 @@ var _ = Describe("NewFailoverClusterClient", func() {
 
 		sentinel := redis.NewSentinelClient(&redis.Options{
 			Addr:       ":" + sentinelPort1,
+			MaxRetries: -1,
 		})
 
 		addr, err := sentinel.GetMasterAddrByName(ctx, sentinelName).Result()
@@ -130,8 +126,20 @@ var _ = Describe("NewFailoverClusterClient", func() {
 
 		master = redis.NewClient(&redis.Options{
 			Addr:       net.JoinHostPort(addr[0], addr[1]),
+			MaxRetries: -1,
 		})
 		masterPort = addr[1]
+
+		// Wait until slaves are picked up by sentinel.
+		Eventually(func() string {
+			return sentinel1.Info(ctx).Val()
+		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
+		Eventually(func() string {
+			return sentinel2.Info(ctx).Val()
+		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
+		Eventually(func() string {
+			return sentinel3.Info(ctx).Val()
+		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
 	})
 
 	AfterEach(func() {
@@ -152,25 +160,6 @@ var _ = Describe("NewFailoverClusterClient", func() {
 		// Create subscription.
 		ch := client.Subscribe(ctx, "foo").Channel()
 
-		// Wait until replicated.
-		Eventually(func() string {
-			return sentinelSlave1.Get(ctx, "foo").Val()
-		}, "15s", "100ms").Should(Equal("master"))
-		Eventually(func() string {
-			return sentinelSlave2.Get(ctx, "foo").Val()
-		}, "15s", "100ms").Should(Equal("master"))
-
-		// Wait until slaves are picked up by sentinel.
-		Eventually(func() string {
-			return sentinel1.Info(ctx).Val()
-		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
-		Eventually(func() string {
-			return sentinel2.Info(ctx).Val()
-		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
-		Eventually(func() string {
-			return sentinel3.Info(ctx).Val()
-		}, "15s", "100ms").Should(ContainSubstring("slaves=2"))
-
 		// Kill master.
 		err = master.Shutdown(ctx).Err()
 		Expect(err).NotTo(HaveOccurred())
@@ -179,9 +168,9 @@ var _ = Describe("NewFailoverClusterClient", func() {
 		}, "15s", "100ms").Should(HaveOccurred())
 
 		// Check that client picked up new master.
-		Eventually(func() error {
+		Eventually(func() string {
-			return client.Get(ctx, "foo").Err()
+			return client.Get(ctx, "foo").Val()
-		}, "15s", "100ms").ShouldNot(HaveOccurred())
+		}, "15s", "100ms").Should(Equal("master"))
 
 		// Check if subscription is renewed.
 		var msg *redis.Message