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atlas's Introduction

###一、简介

Atlas是由 Qihoo 360公司Web平台部基础架构团队开发维护的一个基于MySQL协议的数据中间层项目。它在MySQL官方推出的MySQL-Proxy 0.8.2版本的基础上,修改了大量bug,添加了很多功能特性。目前该项目在360公司内部得到了广泛应用,很多MySQL业务已经接入了Atlas平台,每天承载的读写请求数达几十亿条。

主要功能:

1.读写分离

2.从库负载均衡

3.IP过滤

4.自动分表

5.DBA可平滑上下线DB

6.自动摘除宕机的DB

###二、Atlas相对于官方MySQL-Proxy的优势

1.将主流程中所有Lua代码用C重写,Lua仅用于管理接口

2.重写网络模型、线程模型

3.实现了真正意义上的连接池

4.优化了锁机制,性能提高数十倍

###三、Atlas详细说明

1.Atlas的安装

2.Atlas的运行及常见问题

3.Atlas的分表功能简介

4.Atla部分配置参数及原理详解

5.Atlas的架构

6.Atlas的性能测试

7.Atlas功能特点FAQ

###四、Atlas的需求及Bug反馈方式

如果用户在实际的应用场景中对Atlas有新的功能需求,或者在使用Atlas的过程中发现了bug,欢迎用户发邮件至zhuchao[AT]360.cn,与我们取得联系,我们将及时回复。另外有热心网友建立了QQ群326544838,开发者也已经加入,方便讨论。

###五、名字来源

Atlas:希腊神话中双肩撑天的巨人,普罗米修斯的兄弟,最高大强壮的神之一,因反抗宙斯失败而被罚顶天。我们期望这个系统能够脚踏后端DB,为前端应用撑起一片天。

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