简单实现ShardingSphere读写分离

上效果图：

注意ShardingSphere还在孵化，选择要考虑。

• 如果项目中已经有相关包，不用重复引入：

• 如果你在使用blade,先删除spring自带数据源配置

• yml配置：

spring:
  shardingsphere:
    datasource:
      names: master,slave0
      slave0:
        password: root
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://111.222.333.444:3306/xxx?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
        username: admin
      master:
        password: root
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://555.666.777.888:3306/xxx?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
        username: root
    masterslave:
      slave-data-source-names: slave0
      name: ms
      master-data-source-name: master
    props:
      sql:
        show: true

• OK.已经完成了…开启trace级别日志查看insert和select效果吧
• 没有两个mysql？简单贴下docker-compose：

spring:
  shardingsphere:
    datasource:
      names: master,slave0
      slave0:
        password: root
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://111.222.333.444:3306/xxx?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
        username: admin
      master:
        password: root
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://555.666.777.888:3306/xxx?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
        username: root
    masterslave:
      slave-data-source-names: slave0
      name: ms
      master-data-source-name: master
    props:
      sql:
        show: true

• master:当前目录下mysql/conf.d/mysqld.cnf

spring:
  shardingsphere:
    datasource:
      names: master,slave0
      slave0:
        password: root
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://111.222.333.444:3306/xxx?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
        username: admin
      master:
        password: root
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://555.666.777.888:3306/xxx?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
        username: root
    masterslave:
      slave-data-source-names: slave0
      name: ms
      master-data-source-name: master
    props:
      sql:
        show: true

• slave:当前目录下mysql/conf.d/mysqld.cnf

spring:
  shardingsphere:
    datasource:
      names: master,slave0
      slave0:
        password: root
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://111.222.333.444:3306/xxx?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
        username: admin
      master:
        password: root
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://555.666.777.888:3306/xxx?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
        username: root
    masterslave:
      slave-data-source-names: slave0
      name: ms
      master-data-source-name: master
    props:
      sql:
        show: true

当然如果你只有一个机子，那就复制docker-compose中的mysql并且修改端口号和挂载文件地址。

• 大概主从同步流程

spring:
  shardingsphere:
    datasource:
      names: master,slave0
      slave0:
        password: root
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://111.222.333.444:3306/xxx?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
        username: admin
      master:
        password: root
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://555.666.777.888:3306/xxx?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
        username: root
    masterslave:
      slave-data-source-names: slave0
      name: ms
      master-data-source-name: master
    props:
      sql:
        show: true

至此，简单的msyql主从也配好了。然后自行测试吧。