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	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#本文概要
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	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#概述
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#为什么要优化
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#如何优化
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#字段设计
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#原则尽量使用整型表示字符串
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#存储ip
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#mysql内部的枚举类型单选和集合多选类型
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#原则定长和非定长数据类型的选择
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#金额
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#定点数decimal
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#小单位大数额避免出现小数
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#字符串存储
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#原则尽可能选择小的数据类型和指定短的长度
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#原则尽可能使用-not-null
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#原则字段注释要完整见名知意
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#原则单表字段不宜过多
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#原则可以预留字段
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#关联表的设计
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#一对多
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#多对多
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#一对一
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#范式-normal-format
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#第一范式1nf字段原子性
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#第二范式消除对主键的部分依赖
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#第三范式消除对主键的传递依赖
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#存储引擎选择
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#功能差异
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#存储差异
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#选择依据
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#索引
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#索引检索为什么快
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#mysql中索引类型
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#索引管理语法
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#查看索引
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	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#索引覆盖
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#语法细节要点
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#字段要独立出现
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#like查询不能以通配符开头
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#复合索引只对第一个字段有效
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#or两边条件都有索引可用
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#状态值不容易使用到索引
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#如何创建索引
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#前缀索引
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#索引的存储结构
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	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#哈希索引
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#查询缓存
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#在配置文件中开启缓存
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#在客户端设置缓存大小
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#将查询结果缓存
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#重置缓存
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#缓存失效问题大问题
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#注意事项
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#分区
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	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#mysql提供的分区算法
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	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#list算法
	https://camo.githubusercontent.com/b5cfa731849fd3e8ba41ee0a1cc81124b5c6de55b1a1b3cc73011de664de5850/687474703a2f2f7a616e77656e626c6f672e6f73732d636e2d6265696a696e672e616c6979756e63732e636f6d2f31382d31322d32362f35343234303837362e6a7067
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#分区管理语法
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#rangelist
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#增加分区
	https://camo.githubusercontent.com/61e61be2b76d7bb04bc74a5c2161291b3019a9ec12fa27f5dcb77bc646a131fd/687474703a2f2f7a616e77656e626c6f672e6f73732d636e2d6265696a696e672e616c6979756e63732e636f6d2f31382d31322d32362f31373136303031322e6a7067
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#删除分区
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#keyhash
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#新增分区
	https://camo.githubusercontent.com/74ab38c52eaea52eb2e560a0e45e6d744dcb462e11c8a1fb6736757b7b468181/687474703a2f2f7a616e77656e626c6f672e6f73732d636e2d6265696a696e672e616c6979756e63732e636f6d2f31382d31322d32362f38333038393734362e6a7067
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#销毁分区
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#分区的使用
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#水平分割和垂直分割
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#分表原因
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#id重复的解决方案
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#集群
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#安装和配置主从复制
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#环境
下载地址	https://mirrors.163.com/mysql/Downloads/MySQL-5.7/mysql-5.7.23-linux-glibc2.12-x86_64.tar.gz
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#安装和配置
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#配置主从节点
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#配置master
	https://camo.githubusercontent.com/97dbd85a0a02df912bf43f74eedb8b3c354977cc133f8bc5eb9d6a8495fe0f18/687474703a2f2f7a616e77656e626c6f672e6f73732d636e2d6265696a696e672e616c6979756e63732e636f6d2f31382d31322d32392f39303438353134302e6a7067
	https://camo.githubusercontent.com/255bcf73374efd857094fda014964d1c1dfa346e61f8a35927b7d03900e19a41/687474703a2f2f7a616e77656e626c6f672e6f73732d636e2d6265696a696e672e616c6979756e63732e636f6d2f31382d31322d32392f33373136323534372e6a7067
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#配置slave
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#测试
使用mysqlreplicate命令快速搭建 Mysql 主从复制	https://blog.csdn.net/xlgen157387/article/details/52452394
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#读写分离
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#方案一定义两种连接
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#方案二使用spring--aop
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#项目结构
	https://camo.githubusercontent.com/abb35b8294f9adb420e40f48c4d56f7c83b2b798ce74c63d3bdd908fddae3823/687474703a2f2f7a616e77656e626c6f672e6f73732d636e2d6265696a696e672e616c6979756e63732e636f6d2f31382d31322d32392f37313734373133372e6a7067
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#引入依赖
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#数据类
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#spring配置文件
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#mapper接口和配置文件
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#核心类
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#routingdatasourceimpl
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#datasourcehandler
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#datasourceaspect
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#测试读写分离
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#负载均衡
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#负载均衡算法
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#高可用
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#典型sql
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#线上ddl
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#数据库导入语句
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#limit-offsetrows
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#select--要少用
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#order-by-rand不要用
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#单表和多表查询
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#count
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#limit-1
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#慢查询日志
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#开启慢查询日志
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#设置临界时间
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#查看日志
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#profile信息
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#开启profile
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#查看profile信息
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#通过query_id查看某条sql所有详细步骤的时间
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#典型的服务器配置
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#压测工具mysqlslap
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#自动生成sql测试
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#并发测试
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#多轮测试
	https://github.com/xiaohuiL/Java-Interview/blob/master/MySQL优化.md#存储引擎测试
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