java——mysql随笔——运维——分库分表&MyCat

野性酷女 2024-02-24 06:57 58阅读 0赞

分库分表：

![72e6497b8be7d1eaa4685c418955483f.png][]

![edc24f6da6a33f7e1f5a609c296f1c7d.png][]

![6ac901b3dba6d1fa039c177ecbe80a71.png][]

介绍：

![10dfd518408207888fd4d1c3fc619762.png][]

![cd3274928a8559f279a4d6f71035b08a.png][]

拆分方式：

![abbe20332ae479d5933d596e8c932e85.png][]

![090319039c705e463074d0e14317b006.png][]

![8131009d2e33e2fb0430b98b5d27df47.png][]

![60b1edf0fe5e4d4e3229d79b9c0031a1.png][]

mycat概述：

![341ac551831b65783dd2971e15f660fe.png][]

![e5345fac0373fe92b829f48b4ad95e0a.png][]

![6050db897c245568e474ef386d982492.png][]

![e4fd3c769a6cccbcc385c25175006f53.png][]

![5a4e218b39397773646250cfb66f1eb7.png][]

![4f841c512cbae23d51fb6b97404ec85e.png][]

mycat核心概念：

![bc630df129d5c62f168991a5cd7e1acd.png][]

mycat入门：

![c58f15d4a87362673cc1487dbccbbb70.png][]

![9c56bf9fccef4d67c30aea5841a1c420.png][]

![2085525a91893684b8890950cf2a9ffd.png][]

![43261148265cb15f3f3f71cde68f2f8a.png][]

![108549716cb1ced01a540c7459ed7b10.png][]

![91f7ee65852ab7666f3961f88ce647bc.png][]

![05facdaec478b204162bfba23177dc1c.png][]

![461338c00fe15d886f788546bdab9500.png][]

验证测试：

![f3c8feab26a64aad1af03313190c64c6.png][]

![5500b4f2bde60f3152be172f4372b939.png][]

![04f51379bdd511d8b937a009e5a38f03.png][]

![65383e8b597b5e97bace26de7ac0e2b9.png][]

![80188c6e68eb0d99cc29ad242d5bd7fa.png][]

![b7e757e136c180c388cd99f1ea0fba88.png][]

创建表

![523d56af51dc3e379f60f777cc782762.png][]

![4882d714c313708386b89952e8fd0b5f.png][]

插入数据，分片

![e514e7866774b108a8cd72e8ee31289c.png][]

![ad80dc32807b4779328f2467502dcd98.png][]

![309172a58e39ebe92cba9ad55916711d.png][]

![0e2d25bff6a4c2572a5095abc3d3d8e4.png][]

![41943e19e10967556e5750cbec4f610b.png][]

![29744c8afd71fd91c24f90052a6d4c05.png][]

![c15e51c745fd1c3a7f73110ae2536a60.png][]

![25e11da41c32ff86cfb6add5496e63e0.png][]

![68402907c1c8394177be8bac2a9d7bad.png][]

![d020f6d1e7c5981b39d2e6617bc6f8f4.png][]

![86d559df55fdfceea1056279eb8bc719.png][]

![ddefee38165ed665af3fb09b95dc5cff.png][]

![39a60e79fdf42091700dd4e05231e9c9.png][]

![3cfa05247ed34f551de88fa0f1cf1691.png][]

![773a4cd64cf96c0153ef64b6948b1906.png][]

mycat配置：

![7b3310daba7a8c245a2b72222ccda741.png][]

![22944ed1e4c79659c2e663c6854d69bc.png][]

![226f0c5ba2487bb15f6a5dcd63f7f0c5.png][]

![a3214dfaa68b0137dd4ea6f33f4bb374.png][]

![3d747cb203dcffbe6175d1a9cfdd0d18.png][]

![116cd298aa189a30c9ef8798900bc7c7.png][]

![1fc5ddea0db037b63ff85ac2b1d88fbe.png][]

![848ae078b22fad5baa621076480a916f.png][]

![ae966591a64308c938184d5256da6e60.png][]

![254c47e6191b12f2067b532ac530e97e.png][]

![3f6b92a1c0c8adc433e638bbbe290e98.png][]

![c706c7174d4c18e8b74f418d3b96156d.png][]

示例：

![cb6fe247349dd28e3744c191891d3695.png][]

![64d0ebad65e047254ab996da7edc90ac.png][]

mycat分片——垂直分库：

![4895c7adbd33ad69a9a792b5b7802054.png][]

![b20e39b35ccda5d902ae8ca4c9569ffb.png][]

![8ed221dc533ed758ebc9f18fb6996154.png][]

![03481844fa6eb7bc3c7967d9b9f9b6ea.png][]

![4249311ad32587bf482888400a826726.png][]

![8f94012963408ed5d533c9db7b3bdaa5.png][]

![090ee676a58b01fbc001f88ea5098a66.png][]

![0ef525b900b2d861ec5a006ae3092d71.png][]

![f57730e5c4ff798e835fe232fe7919b1.png][]

![434113e250c04b7d841f8c1c4a265f43.png][]

mycat分片——水平分表：

垂直分库的`schema.xml文件配置如下：`

<?xml version="1.0"?>
    <!DOCTYPE mycat:schema SYSTEM "schema.dtd">
    <mycat:schema xmlns:mycat="http://io.mycat/">
    
        <schema name="SHOPPING" checkSQLschema="true" sqlMaxLimit="100">
            <table name="tb_goods_base" dataNode="dn1" primaryKey="id" />
            <table name="tb_goods_brand" dataNode="dn1" primaryKey="id" />
            <table name="tb_goods_cat" dataNode="dn1" primaryKey="id" />
            <table name="tb_goods_desc" dataNode="dn1" primaryKey="id" />
            <table name="tb_goods_item" dataNode="dn1" primaryKey="goods_id" />
            
            <table name="tb_order_item" dataNode="dn2" primaryKey="id" />
            <table name="tb_order_master" dataNode="dn2" primaryKey="order_id" />
            <table name="tb_order_pay_log" dataNode="dn2" primaryKey="out_trade_no" />
            
            <table name="tb_user" dataNode="dn3" primaryKey="id" />
            <table name="tb_user_address" dataNode="dn3" primaryKey="id" />
            <table name="tb_areas_provinces" dataNode="dn3" primaryKey="id" />
            <table name="tb_areas_city" dataNode="dn3" primaryKey="id" />
            <table name="tb_areas_region" dataNode="dn3" primaryKey="id" />
        </schema>
        
        <dataNode name="dn1" dataHost="dhost1" database="shopping" />
        <dataNode name="dn2" dataHost="dhost2" database="shopping" />
        <dataNode name="dn3" dataHost="dhost3" database="shopping" />
        
        <dataHost name="dhost1" maxCon="1000" minCon="10" balance="0"
                  writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1"  slaveThreshold="100">
            <heartbeat>select user()</heartbeat>
            <writeHost host="master" url="jdbc:mysql://192.168.3.248:3306?useSSL=false&serverTimezone=Asia/Shanghai&characterEncoding=utf8" user="root" password="1234" />
        </dataHost>
        
        <dataHost name="dhost2" maxCon="1000" minCon="10" balance="0"
                  writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1"  slaveThreshold="100">
            <heartbeat>select user()</heartbeat>
            <writeHost host="master" url="jdbc:mysql://192.168.200.213:3306?useSSL=false&serverTimezone=Asia/Shanghai&characterEncoding=utf8" user="root" password="1234" />
        </dataHost>
        
        <dataHost name="dhost3" maxCon="1000" minCon="10" balance="0"
                  writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1"  slaveThreshold="100">
            <heartbeat>select user()</heartbeat>
            <writeHost host="master" url="jdbc:mysql://192.168.200.214:3306?useSSL=false&serverTimezone=Asia/Shanghai&characterEncoding=utf8" user="root" password="1234" />
        </dataHost>
        
    </mycat:schema>

`server.xml文件配置如下：`

<user name="root" defaultAccount="true">
        <property name="password">123456</property>
        <property name="schemas">SHOPPING</property>
        
        
        
    </user>
    
    <user name="user">
        <property name="password">123456</property>
        <property name="schemas">SHOPPING</property>
        <property name="readOnly">true</property>
    </user>

省份表为所有库都存在，则

`改MyCat—schema.xml文件配置`

`schema.xml文件配置如下：`

<?xml version="1.0"?>
    <!DOCTYPE mycat:schema SYSTEM "schema.dtd">
    <mycat:schema xmlns:mycat="http://io.mycat/">
    
        <schema name="SHOPPING" checkSQLschema="true" sqlMaxLimit="100">
    
            <table name="tb_goods_base" dataNode="dn1" primaryKey="id" />
            <table name="tb_goods_brand" dataNode="dn1" primaryKey="id" />
            <table name="tb_goods_cat" dataNode="dn1" primaryKey="id" />
            <table name="tb_goods_desc" dataNode="dn1" primaryKey="id" />
            <table name="tb_goods_item" dataNode="dn1" primaryKey="goods_id" />
            
            <table name="tb_order_item" dataNode="dn2" primaryKey="id" />
            <table name="tb_order_master" dataNode="dn2" primaryKey="order_id" />
            <table name="tb_order_pay_log" dataNode="dn2" primaryKey="out_trade_no" />
            
            <table name="tb_user" dataNode="dn3" primaryKey="id" />
            <table name="tb_user_address" dataNode="dn3" primaryKey="id" />
            
            <table name="tb_areas_provinces" dataNode="dn1,dn2,dn3" primaryKey="id" type="global" />
            <table name="tb_areas_city" dataNode="dn1,dn2,dn3" primaryKey="id" type="global" />
            <table name="tb_areas_region" dataNode="dn1,dn2,dn3" primaryKey="id" type="global" />
            
        </schema>
        
        <dataNode name="dn1" dataHost="dhost1" database="shopping" />
        <dataNode name="dn2" dataHost="dhost2" database="shopping" />
        <dataNode name="dn3" dataHost="dhost3" database="shopping" />
        
        <dataHost name="dhost1" maxCon="1000" minCon="10" balance="0"
                  writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1"  slaveThreshold="100">
            <heartbeat>select user()</heartbeat>
            <writeHost host="master" url="jdbc:mysql://192.168.3.248:3306?useSSL=false&serverTimezone=Asia/Shanghai&characterEncoding=utf8" user="root" password="1234" />
        </dataHost>
        
        <dataHost name="dhost2" maxCon="1000" minCon="10" balance="0"
                  writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1"  slaveThreshold="100">
            <heartbeat>select user()</heartbeat>
            <writeHost host="master" url="jdbc:mysql://192.168.200.213:3306?useSSL=false&serverTimezone=Asia/Shanghai&characterEncoding=utf8" user="root" password="1234" />
        </dataHost>
        
        <dataHost name="dhost3" maxCon="1000" minCon="10" balance="0"
                  writeType="0" dbType="mysql" dbDriver="jdbc" switchType="1"  slaveThreshold="100">
            <heartbeat>select user()</heartbeat>
            <writeHost host="master" url="jdbc:mysql://192.168.200.214:3306?useSSL=false&serverTimezone=Asia/Shanghai&characterEncoding=utf8" user="root" password="1234" />
        </dataHost>
        
    </mycat:schema>

![dbda0cfbb3b0bc6d0902e673432a9137.png][]

![a7243ff937aa0544ff0ec61f744d6ca9.png][]

1.MyCat—schema.xml文件配置

`schema.xml文件配置如下：(部分主要配置信息展示)`

![1b8fd1e014f0bce9799c86cac2317fc0.png][]

2.MyCat—server.xml文件配置

`server.xml文件配置如下：(部分主要配置信息展示)`

<user name="root" defaultAccount="true">
        <property name="password">123456</property>
        <property name="schemas">SHOPPING,ITCAST</property>
        
        
        
    </user>
    
    <user name="user">
        <property name="password">123456</property>
        <property name="schemas">SHOPPING</property>
        <property name="readOnly">true</property>
    </user>

![d60a5e456f619726e4617502f356914c.png][]

csdn：https://blog.csdn.net/weixin\_44904239/article/details/130379510

![dcf6e3c4bb4b27d5ecc94075dfebab81.png][]

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