1.MongoDB、Redis兼容集群模式

2.离线数据接口化访问

gs/model/chat_msg.go

@@ -0,0 +1,22 @@
+package model
+
+import (
+	"go.mongodb.org/mongo-driver/bson/primitive"
+)
+
+const (
+	ChatMsgTypeText = iota
+	ChatMsgTypeIcon
+)
+
+type ChatMsg struct {
+	ID       primitive.ObjectID `bson:"_id,omitempty"`
+	Sequence uint32             `bson:"-"`
+	Time     uint32             `bson:"Time"`
+	Uid      uint32             `bson:"Uid"`
+	ToUid    uint32             `bson:"ToUid"`
+	IsRead   bool               `bson:"IsRead"`
+	MsgType  uint8              `bson:"MsgType"`
+	Text     string             `bson:"Text"`
+	Icon     uint32             `bson:"Icon"`
+}