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QQChatServer

基于muduo网络库实现的qq集群聊天服务器,工作在Nginx的Tcp负载均衡利用Redis发布订阅模式的消息队列实现集群服务器消息的转发

目录结构:linux下利用tree命令打印

    ---auto.sh自动编译脚本
    ├── bin
    │   ├── ChatClient
    │   └── ChatServer
    ├── build
    ├── CMakeLists.txt
    ├── include
    │   ├── public.hpp
    │   └── server
    │       ├── chatserver.hpp
    │       ├── chatservice.hpp
    │       ├── db
    │       │   └── db.hpp
    │       ├── model
    │       │   ├── friendmodel.hpp
    │       │   ├── group.hpp
    │       │   ├── groupmodel.hpp
    │       │   ├── groupuser.hpp
    │       │   ├── offlinemessagemodel.hpp
    │       │   ├── user.hpp
    │       │   └── usermodel.hpp
    │       └── redis
    │           └── redis.hpp
    ├── README.md
    ├── src
    │   ├── client
    │   │   ├── client.cpp
    │   │   └── CMakeLists.txt
    │   ├── CMakeLists.txt
    │   └── server
    │       ├── chatserver.cpp
    │       ├── chatservice.cpp
    │       ├── CMakeLists.txt
    │       ├── db
    │       │   └── db.cpp
    │       ├── main.cpp
    │       ├── model
    │       │   ├── friendmodel.cpp
    │       │   ├── groupmodel.cpp
    │       │   ├── offlinemessagemodel.cpp
    │       │   └── usermodel.cpp
    │       └── redis
    │           └── redis.cpp
    └── thirdparty
        └── json.hpp

单体的一个架构设计: image

具体的数据库设计 建表代码如下 CREATE TABLE User( id INT NOT NULL AUTO_INCREMENT PRIMARY KEY COMMENT '用户id', name VARCHAR(50) NOT NULL UNIQUE COMMENT '用户名', password VARCHAR(50) NOT NULL COMMENT '用户密码', state ENUM('online','offline') DEFAULT('offline') COMMENT '当前登录状态' ); CREATE TABLE Friend( userid INT NOT NULL COMMENT '用户id', friendid INT NOT NULL COMMENT '好友id', PRIMARY KEY (userid,friendid) ); CREATE TABLE AllGroup( groupid INT NOT NULL AUTO_INCREMENT PRIMARY KEY COMMENT '群组id', groupname VARCHAR(50) NOT NULL UNIQUE COMMENT '群组名称', groupdesc VARCHAR(200) NOT NULL DEFAULT('') COMMENT'群组功能描述:学习群,聊天群等等' ); CREATE TABLE GroupUser( groupid INT NOT NULL COMMENT '群组id', userid INT NOT NULL COMMENT '群组成员id', grouprole ENUM('creator','normal') NOT NULL DEFAULT('normal') COMMENT'组内成员角色身份', PRIMARY KEY (groupid,userid) ); CREATE TABLE OfflineMessage( userid INT NOT NULL COMMENT '用户id', message VARCHAR(500) NOT NULL COMMENT'离线信息(Json字符串)' );

对数据库层进行了一个ORM框架的设计: image

所有model对象就是封装了用来操作对应表数据的的方法,接收User/Group对象(映射对应表的字段),调用封装的数据库方法,去对各个表进行操作

引入了负载均衡之后的一个架构: image

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