group support

resource/redisCli/util.go

@@ -125,3 +125,17 @@ func DecrNum(key string, num int64) (int64, error) {
 	}
 	return resNum, nil
 }
+
+func SetExpire(key string, expiration time.Duration) error {
+	ttl, err := RedisClient.TTL(context.Background(), key).Result()
+	if err != nil {
+		return err
+	}
+	if ttl == -1 {
+		err = RedisClient.Expire(context.Background(), key, expiration).Err()
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}