diff --git a/pkg/common/cachekey/user.go b/pkg/common/cachekey/user.go
new file mode 100644
index 000000000..fbea5168b
--- /dev/null
+++ b/pkg/common/cachekey/user.go
@@ -0,0 +1,14 @@
+package cachekey
+
+const (
+	userInfoKey             = "USER_INFO:"
+	userGlobalRecvMsgOptKey = "USER_GLOBAL_RECV_MSG_OPT_KEY:"
+)
+
+func GetUserInfoKey(userID string) string {
+	return userInfoKey + userID
+}
+
+func GetUserGlobalRecvMsgOptKey(userID string) string {
+	return userGlobalRecvMsgOptKey + userID
+}