diff --git a/handler/im.go b/handler/im.go
index aaa4b5d..b0ec3ee 100644
--- a/handler/im.go
+++ b/handler/im.go
@@ -70,7 +70,7 @@ func SetUpIMGroup(router *gin.Engine) {
 	imGroup.POST("/get_group", GetGroups)
 	imGroup.POST("/get_group_req_user", GetFriendRequest)
 	imGroup.GET("/sse_msg", ServerSendMsg)
-	imGroup.GET("/ws_v2", ServerSsendMsgV2)
+	imGroup.GET("/ws_v2", ServerSendMsgV2)
 	imGroup.POST("/get_friend_list", GetFriendList) //获取好友列表,包括群聊
 	//获取好友请求
 	imGroup.POST("/get_friend_request", GetFriendRequest)
@@ -432,7 +432,7 @@ func SRMessage(c *gin.Context) {
 	}
 }
 
-func ServerSsendMsgV2(c *gin.Context) {
+func ServerSendMsgV2(c *gin.Context) {
 	//wss
 	id, _ := c.Get("id")
 	user_id := int(id.(float64))
@@ -448,8 +448,8 @@ func ServerSsendMsgV2(c *gin.Context) {
 	defer ws.Close()
 	//设置用户在线状态
 	worker.SetRedisWithExpire("user_"+strconv.Itoa(user_id)+"_status_v2", "1", time.Second*60)
+	worker.SetRedisBitmap("im2_online_users", int64(user_id), 1)
 	//发送消息
-
 	key := "user_" + strconv.Itoa(user_id) + "_msg_ids"
 
 	for {
@@ -485,6 +485,7 @@ func ServerSsendMsgV2(c *gin.Context) {
 			err2 := ws.WriteMessage(websocket.TextMessage, res3)
 			if err2 != nil {
 				worker.SetRedisWithExpire("user_"+strconv.Itoa(user_id)+"_status_v2", "0", time.Second*3600)
+				worker.SetRedisBitmap("im2_online_users", int64(user_id), 0)
 				clientsMux.Lock()
 				delete(clients, ws)
 				clientsMux.Unlock()
diff --git a/service/imService.go b/service/imService.go
index eca1aed..617cf63 100644
--- a/service/imService.go
+++ b/service/imService.go
@@ -50,8 +50,9 @@ func CreateGeneralMessageService(from_id, to_id, msg_type, group_id int, content
 		if from_id == 0 || group_id == 0 || content == "" {
 			return errors.New("参数错误"), 0
 		}
+		key := "group_" + strconv.Itoa(group_id) + "_users"
 		//判断是否在群里
-		if worker.IsContainKey("group_"+strconv.Itoa(group_id)+"_users") == false {
+		if worker.IsContainKey(key) == false {
 			//设置群缓存
 			isSuccess := SetGroupCache(group_id)
 			//设置失败，直接查询数据库
@@ -77,15 +78,18 @@ func CreateGeneralMessageService(from_id, to_id, msg_type, group_id int, content
 
 		err, id = dao.CreateGeneralMessage(from_id, to_id, msg_type, 0, group_id, content)
 		//获取群里的用户
-		users := dao.FindGroupUsers(group_id)
-		for _, user := range users {
-			if user.UserID == from_id {
+		user_ids := worker.GetRedisSetMembers("group_" + strconv.Itoa(group_id) + "_users")
+		//users := dao.FindGroupUsers(group_id)
+		for _, user_id := range user_ids {
+			//判断是否是自己,不是则存入redis
+			id_, _ := strconv.Atoi(user_id)
+			if id_ == from_id {
 				continue
 			}
-			res := worker.GetRedis("user_" + strconv.Itoa(user.UserID) + "_status_v2")
+			res := worker.GetRedis("user_" + user_id + "_status_v2")
 			if res == "1" {
 				//在线,存入redis
-				worker.PushRedisListWithExpire("user_"+strconv.Itoa(user.UserID)+"_msg_ids", strconv.Itoa(int(id)), time.Second*300)
+				worker.PushRedisListWithExpire("user_"+user_id+"_msg_ids", strconv.Itoa(int(id)), time.Second*300)
 			}
 		}
 	case 3:
diff --git a/worker/redis.go b/worker/redis.go
index e2ff908..709790c 100644
--- a/worker/redis.go
+++ b/worker/redis.go
@@ -313,3 +313,36 @@ func IsContainSet(key string, value string) bool {
 	}
 	return val
 }
+
+// 查看set的所有元素
+func GetRedisSetMembers(key string) []string {
+	ctx := context.Background()
+	val, err := redisClient.SMembers(ctx, key).Result()
+	if err != nil {
+		fmt.Println("Error getting key: %v", err)
+		return nil
+	}
+	return val
+}
+
+// BITMAP
+func SetRedisBitmap(key string, offset int64, value int) bool {
+	ctx := context.Background()
+	err := redisClient.SetBit(ctx, key, offset, value).Err()
+	if err != nil {
+		fmt.Println("Error setting key: %v", err)
+		return false
+	}
+	return true
+}
+
+// BITMAP获取
+func GetRedisBitmap(key string, offset int64) int {
+	ctx := context.Background()
+	val, err := redisClient.GetBit(ctx, key, offset).Result()
+	if err != nil {
+		fmt.Println("Error getting key: %v", err)
+		return 0
+	}
+	return int(val)
+}