diff --git a/server/imserver_new/constant/constant.go b/server/imserver_new/constant/constant.go
index 8c5221e6..e4cacca5 100644
--- a/server/imserver_new/constant/constant.go
+++ b/server/imserver_new/constant/constant.go
@@ -40,6 +40,7 @@ const (
 	MEMBER_LOCK_KEY = "member:"
 	GUILD_ID_LOCK_KEY = "guild_id:"
 	GUILD_NAME_LOCK_KEY = "guild_name:"
+	CACHE_LOCK_KEY = "cache:"
 )
 
 const (