refactor: crontask cmd (#1331)

* refactor: cron task

Signed-off-by: rfyiamcool <rfyiamcool@163.com>

* refactor: cron task

Signed-off-by: rfyiamcool <rfyiamcool@163.com>

---------

Signed-off-by: rfyiamcool <rfyiamcool@163.com>

pkg/common/config/config.go

@@ -232,6 +232,7 @@ type configStruct struct {
 	ChatRecordsClearTime              string `yaml:"chatRecordsClearTime"`
 	MsgDestructTime                   string `yaml:"msgDestructTime"`
 	Secret                            string `yaml:"secret"`
+	EnableCronLocker                  bool   `yaml:"enableCronLocker"`
 	TokenPolicy                       struct {
 		Expire int64 `yaml:"expire"`
 	} `yaml:"tokenPolicy"`

pkg/common/db/cache/init_redis.go

@@ -28,12 +28,21 @@ import (
 	"github.com/openimsdk/open-im-server/v3/pkg/common/config"
 )
 
+var (
+	// singleton pattern.
+	redisClient redis.UniversalClient
+)
+
 const (
 	maxRetry = 10 // number of retries
 )
 
 // NewRedis Initialize redis connection.
 func NewRedis() (redis.UniversalClient, error) {
+	if redisClient != nil {
+		return redisClient, nil
+	}
+
 	if len(config.Config.Redis.Address) == 0 {
 		return nil, errors.New("redis address is empty")
 	}
@@ -66,5 +75,6 @@ func NewRedis() (redis.UniversalClient, error) {
 		return nil, fmt.Errorf("redis ping %w", err)
 	}
 
+	redisClient = rdb
 	return rdb, err
 }