diff --git a/internal/msg_transfer/logic/offline_history_msg_handler.go b/internal/msg_transfer/logic/offline_history_msg_handler.go
index 876beb30e..cf3f206cb 100644
--- a/internal/msg_transfer/logic/offline_history_msg_handler.go
+++ b/internal/msg_transfer/logic/offline_history_msg_handler.go
@@ -3,6 +3,7 @@ package logic
 import (
 	"Open_IM/pkg/common/config"
 	"Open_IM/pkg/common/constant"
+	"Open_IM/pkg/common/db"
 	kfk "Open_IM/pkg/common/kafka"
 	"Open_IM/pkg/common/log"
 	pbMsg "Open_IM/pkg/proto/chat"
@@ -15,20 +16,50 @@ import (
 type OfflineHistoryConsumerHandler struct {
 	msgHandle            map[string]fcb
 	cmdCh                chan Cmd2Value
+	msgCh                chan Cmd2Value
 	historyConsumerGroup *kfk.MConsumerGroup
 }
 
 func (mc *OfflineHistoryConsumerHandler) Init(cmdCh chan Cmd2Value) {
 	mc.msgHandle = make(map[string]fcb)
 	mc.cmdCh = cmdCh
-	mc.msgHandle[config.Config.Kafka.Ws2mschatOffline.Topic] = mc.handleChatWs2Mongo
+	mc.msgCh = make(chan Cmd2Value, 1000)
+	if config.Config.ReliableStorage {
+		mc.msgHandle[config.Config.Kafka.Ws2mschatOffline.Topic] = mc.handleChatWs2Mongo
+	} else {
+		mc.msgHandle[config.Config.Kafka.Ws2mschatOffline.Topic] = mc.handleChatWs2MongoLowReliability
+		for i := 0; i < 10; i++ {
+			go mc.Run()
+
+		}
+	}
 	mc.historyConsumerGroup = kfk.NewMConsumerGroup(&kfk.MConsumerGroupConfig{KafkaVersion: sarama.V0_10_2_0,
 		OffsetsInitial: sarama.OffsetNewest, IsReturnErr: false}, []string{config.Config.Kafka.Ws2mschatOffline.Topic},
 		config.Config.Kafka.Ws2mschatOffline.Addr, config.Config.Kafka.ConsumerGroupID.MsgToMongoOffline)
 
 }
-
-func (mc *OfflineHistoryConsumerHandler) handleChatWs2Mongo(msg []byte, msgKey string) {
+func (mc *OfflineHistoryConsumerHandler) Run() {
+	for {
+		select {
+		case cmd := <-mc.msgCh:
+			switch cmd.Cmd {
+			case Msg:
+				msgChannelValue := cmd.Value.(MsgChannelValue)
+				err := saveUserChat(msgChannelValue.userID, msgChannelValue.msg)
+				if err != nil {
+					singleMsgFailedCount++
+					log.NewError(msgChannelValue.msg.OperationID, "single data insert to mongo err", err.Error(), msgChannelValue.msg.String())
+				} else {
+					singleMsgSuccessCountMutex.Lock()
+					singleMsgSuccessCount++
+					singleMsgSuccessCountMutex.Unlock()
+				}
+			}
+		}
+	}
+}
+func (mc *OfflineHistoryConsumerHandler) handleChatWs2Mongo(cMsg *sarama.ConsumerMessage, msgKey string, sess sarama.ConsumerGroupSession) {
+	msg := cMsg.Value
 	now := time.Now()
 	msgFromMQ := pbMsg.MsgDataToMQ{}
 	err := proto.Unmarshal(msg, &msgFromMQ)
@@ -95,6 +126,102 @@ func (mc *OfflineHistoryConsumerHandler) handleChatWs2Mongo(msg []byte, msgKey s
 		log.NewError(msgFromMQ.OperationID, "SessionType error", msgFromMQ.String())
 		return
 	}
+	sess.MarkMessage(cMsg, "")
+	log.NewDebug(msgFromMQ.OperationID, "msg_transfer handle topic data to database success...", msgFromMQ.String())
+}
+func (mc *OfflineHistoryConsumerHandler) handleChatWs2MongoLowReliability(cMsg *sarama.ConsumerMessage, msgKey string, sess sarama.ConsumerGroupSession) {
+	msg := cMsg.Value
+	now := time.Now()
+	msgFromMQ := pbMsg.MsgDataToMQ{}
+	err := proto.Unmarshal(msg, &msgFromMQ)
+	if err != nil {
+		log.Error("msg_transfer Unmarshal msg err", "", "msg", string(msg), "err", err.Error())
+		return
+	}
+	operationID := msgFromMQ.OperationID
+	log.NewInfo(operationID, "msg come mongo!!!", "", "msg", string(msg))
+	//Control whether to store offline messages (mongo)
+	isHistory := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsHistory)
+	//Control whether to store history messages (mysql)
+	isPersist := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsPersistent)
+	isSenderSync := utils.GetSwitchFromOptions(msgFromMQ.MsgData.Options, constant.IsSenderSync)
+	switch msgFromMQ.MsgData.SessionType {
+	case constant.SingleChatType:
+		log.NewDebug(msgFromMQ.OperationID, "msg_transfer msg type = SingleChatType", isHistory, isPersist)
+		if isHistory {
+			seq, err := db.DB.IncrUserSeq(msgKey)
+			if err != nil {
+				log.NewError(operationID, "data insert to redis err", err.Error(), string(msg))
+				return
+			}
+			sess.MarkMessage(cMsg, "")
+			msgFromMQ.MsgData.Seq = uint32(seq)
+			log.Debug(operationID, "send ch msg is ", msgFromMQ.String())
+			mc.msgCh <- Cmd2Value{Cmd: Msg, Value: MsgChannelValue{msgKey, &msgFromMQ}}
+			//err := saveUserChat(msgKey, &msgFromMQ)
+			//if err != nil {
+			//	singleMsgFailedCount++
+			//	log.NewError(operationID, "single data insert to mongo err", err.Error(), msgFromMQ.String())
+			//	return
+			//}
+			//singleMsgSuccessCountMutex.Lock()
+			//singleMsgSuccessCount++
+			//singleMsgSuccessCountMutex.Unlock()
+			//log.NewDebug(msgFromMQ.OperationID, "sendMessageToPush cost time ", time.Since(now))
+		}
+		if !isSenderSync && msgKey == msgFromMQ.MsgData.SendID {
+		} else {
+			go sendMessageToPush(&msgFromMQ, msgKey)
+		}
+		log.NewDebug(operationID, "saveUserChat cost time ", time.Since(now))
+	case constant.GroupChatType:
+		log.NewDebug(msgFromMQ.OperationID, "msg_transfer msg type = GroupChatType", isHistory, isPersist)
+		if isHistory {
+			seq, err := db.DB.IncrUserSeq(msgKey)
+			if err != nil {
+				log.NewError(operationID, "data insert to redis err", err.Error(), string(msg))
+				return
+			}
+			sess.MarkMessage(cMsg, "")
+			msgFromMQ.MsgData.Seq = uint32(seq)
+			log.Debug(operationID, "send ch msg is ", msgFromMQ.String())
+			mc.msgCh <- Cmd2Value{Cmd: Msg, Value: MsgChannelValue{msgKey, &msgFromMQ}}
+			//err := saveUserChat(msgFromMQ.MsgData.RecvID, &msgFromMQ)
+			//if err != nil {
+			//	log.NewError(operationID, "group data insert to mongo err", msgFromMQ.String(), msgFromMQ.MsgData.RecvID, err.Error())
+			//	return
+			//}
+			//groupMsgCount++
+		}
+		go sendMessageToPush(&msgFromMQ, msgFromMQ.MsgData.RecvID)
+	case constant.NotificationChatType:
+		log.NewDebug(msgFromMQ.OperationID, "msg_transfer msg type = NotificationChatType", isHistory, isPersist)
+		if isHistory {
+			seq, err := db.DB.IncrUserSeq(msgKey)
+			if err != nil {
+				log.NewError(operationID, "data insert to redis err", err.Error(), string(msg))
+				return
+			}
+			sess.MarkMessage(cMsg, "")
+			msgFromMQ.MsgData.Seq = uint32(seq)
+			log.Debug(operationID, "send ch msg is ", msgFromMQ.String())
+			mc.msgCh <- Cmd2Value{Cmd: Msg, Value: MsgChannelValue{msgKey, &msgFromMQ}}
+			//err := saveUserChat(msgKey, &msgFromMQ)
+			//if err != nil {
+			//	log.NewError(operationID, "single data insert to mongo err", err.Error(), msgFromMQ.String())
+			//	return
+			//}
+			//log.NewDebug(msgFromMQ.OperationID, "sendMessageToPush cost time ", time.Since(now))
+		}
+		if !isSenderSync && msgKey == msgFromMQ.MsgData.SendID {
+		} else {
+			go sendMessageToPush(&msgFromMQ, msgKey)
+		}
+		log.NewDebug(operationID, "saveUserChat cost time ", time.Since(now))
+	default:
+		log.NewError(msgFromMQ.OperationID, "SessionType error", msgFromMQ.String())
+		return
+	}
 	log.NewDebug(msgFromMQ.OperationID, "msg_transfer handle topic data to database success...", msgFromMQ.String())
 }
 
@@ -110,8 +237,7 @@ func (mc *OfflineHistoryConsumerHandler) ConsumeClaim(sess sarama.ConsumerGroupS
 	for msg := range claim.Messages() {
 		if GetOnlineTopicStatus() == OnlineTopicVacancy {
 			log.NewDebug("", "vacancy offline kafka get info to mongo", "msgTopic", msg.Topic, "msgPartition", msg.Partition, "msg", string(msg.Value))
-			mc.msgHandle[msg.Topic](msg.Value, string(msg.Key))
-			sess.MarkMessage(msg, "")
+			mc.msgHandle[msg.Topic](msg, string(msg.Key), sess)
 		} else {
 			select {
 			case <-mc.cmdCh:
@@ -119,8 +245,7 @@ func (mc *OfflineHistoryConsumerHandler) ConsumeClaim(sess sarama.ConsumerGroupS
 			case <-time.After(time.Millisecond * time.Duration(100)):
 				log.NewDebug("", "timeout offline kafka get info to mongo", "msgTopic", msg.Topic, "msgPartition", msg.Partition, "msg", string(msg.Value))
 			}
-			mc.msgHandle[msg.Topic](msg.Value, string(msg.Key))
-			sess.MarkMessage(msg, "")
+			mc.msgHandle[msg.Topic](msg, string(msg.Key), sess)
 		}
 	}