Go 언어와 Redis를 사용하여 온라인 채팅방을 구현하는 방법

package main

import (
    "github.com/gin-gonic/gin" //引入gin框架
)

func main() {
    router := gin.Default() //创建一个gin实例
    router.GET("/chat", func(c *gin.Context) {
        //处理websocket连接
    })

    go router.Run(":8080") //启动服务器，监听8080端口
    select {}
}

package main

import (
    "github.com/gin-gonic/gin"
    "github.com/gorilla/websocket"
)

func main() {
    router := gin.Default()
    router.GET("/chat", func(c *gin.Context) {
        conn, _ := websocket.Upgrade(c.Writer, c.Request, nil, 1024, 1024) //升级为websocket连接
        //处理连接
        for {
            _, msg, _ := conn.ReadMessage() //读取消息
            //处理消息
            conn.WriteMessage(websocket.TextMessage, []byte("Received: "+string(msg))) //回复消息
        }
    })

    go router.Run(":8080")
    select {}
}

package main

import (
    "github.com/gin-gonic/gin"
    "github.com/gorilla/websocket"
    "github.com/go-redis/redis"
)

func main() {
    client := redis.NewClient(&redis.Options{
        Addr:     "localhost:6379", //Redis服务器地址
        Password: "",               //Redis密码，如无则留空
        DB:       0,                //Redis数据库编号
    })

    router := gin.Default()
    router.GET("/chat", func(c *gin.Context) {
        conn, _ := websocket.Upgrade(c.Writer, c.Request, nil, 1024, 1024)
        for {
            _, msg, _ := conn.ReadMessage()
            //处理消息
            conn.WriteMessage(websocket.TextMessage, []byte("Received: "+string(msg)))
            //将消息存储到Redis中
            client.RPush("chat_logs", msg)
        }
    })

    go router.Run(":8080")
    select {}
}

package main

import (
    "github.com/gin-gonic/gin"
    "github.com/gorilla/websocket"
    "github.com/go-redis/redis"
)

func main() {
    client := redis.NewClient(&redis.Options{
        Addr:     "localhost:6379",
        Password: "",
        DB:       0,
    })

    pubsub := client.Subscribe("chat_logs") //订阅Redis通道
    defer pubsub.Close()

    router := gin.Default()
    router.GET("/chat", func(c *gin.Context) {
        conn, _ := websocket.Upgrade(c.Writer, c.Request, nil, 1024, 1024)
        for {
            _, msg, _ := conn.ReadMessage()
            conn.WriteMessage(websocket.TextMessage, []byte("Received: "+string(msg)))
            client.RPush("chat_logs", msg)
        }
    })

    //实时发送聊天记录
    go func() {
        for {
            msg, _ := pubsub.ReceiveMessage()
            //发送消息给所有在线的客户端
            router.RouterGroup.Broadcast([]byte(msg.Payload))
        }
    }()

    go router.Run(":8080")
    select {}
}