转自:https://zhouzhixiang.blog.csdn.net/article/details/104853953 感谢作者的分享
文章目录
参考:
基于Docker的Mysql主从复制搭建
ShardingSphere官网
技术体系
Springboot2.1.5 + shardingsphere4.0.0-RC1 + Mysql5.7 + mysql-connector-java5.1.47
- 1
背景
目前公司正在进行的在线客服IM项目,考虑未来会话消息请求流量剧增以及消息存储带来的挑战,单一数据库无法支撑,需要分库&分表、读写分离以应对高并发带来的挑战。
基于市面上较为流行的几个数据库中间件我们结合公司技术体系,再三考虑,决定使用ShardingSphere作为在线客服项目的数据库中间件。
ShardingSphere介绍
Apache ShardingSphere(Incubator) 是一套开源的分布式数据库中间件解决方案组成的生态圈,它由Sharding-JDBC、Sharding-Proxy和Sharding-Sidecar(规划中)这3款相互独立,却又能够混合部署配合使用的产品组成。它们均提供标准化的数据分片、分布式事务和数据库治理功能,可适用于如Java同构、异构语言、云原生等各种多样化的应用场景。(来自官网)
ShardingShpere支持的功能
- 分库、分表
- 读写分离
- 分片策略定制化
- 无中心化分布式主键
- 标准化事务接口
- XA强一致事务
- 柔性事务
技术准备
具体安装配置请参见网络博客:如基于Docker的Mysql主从复制搭建
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.zzx.shardingsphere</groupId>
<artifactId>zzx-shardingsphere</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>db-read-write</module>
<module>db-table-read-write</module>
</modules>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.5.RELEASE</version>
<relativePath/>
</parent>
<properties>
<java.version>1.8</java.version>
<mybatis-spring-boot>2.0.1</mybatis-spring-boot>
<druid>1.1.16</druid>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<shardingsphere.version>4.0.0-RC1</shardingsphere.version>
<fastjson.version>1.2.38</fastjson.version>
<mysql-connector-java.version>5.1.47</mysql-connector-java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>${mybatis-spring-boot}</version>
</dependency>
<!--mybatis驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector-java.version}</version>
</dependency>
<!--druid数据源-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>${druid}</version>
</dependency>
<!--shardingsphere版本-->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-jdbc-spring-boot-starter</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-jdbc-spring-namespace</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
<!--lombok实体工具-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>${fastjson.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
分库分表+读写分离
主库0: localhost:3342/im_bis
主库0->从库0: localhost:3343/im_bis
主库1: localhost:3344/im_bis
主库1->从库1: localhost:3345/im_bis
配置从库0和从库1分别作为主库0和主库1的从库,具体配置参考上面提到的基于Docker搭建主从复制网站
/*
Navicat Premium Data Transfer
Source Server : 192.168.89.53
Source Server Type : MySQL
Source Server Version : 50726
Source Host : 192.168.89.53:3306
Source Schema : ddky_im_bis
Target Server Type : MySQL
Target Server Version : 50726
File Encoding : 65001
Date: 08/03/2020 13:18:39
*/
DROP SCHEMA IF EXISTS im_bis;
CREATE SCHEMA IF NOT EXISTS im_bis;
use im_bis
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for im_team_message
-- ----------------------------
DROP TABLE IF EXISTS `im_team_message0`;
CREATE TABLE `im_team_message0` (
`id` bigint(20) NOT NULL COMMENT '主键id',
`team_msg_id` bigint(20) DEFAULT NULL COMMENT '群消息id(服务端生成消息id)',
`team_client_msg_id` varchar(32) DEFAULT '' COMMENT '群消息id(客户端生成)',
`team_id` bigint(20) DEFAULT NULL COMMENT '群组id(对应群组的accid)',
`msg_type` varchar(15) DEFAULT 'TEXT' COMMENT '消息类型:TEXT-文本,PICTURE-图片,AUDIO-音频,VIDEO-视频,FILE-文件,GEO-地理位置,CUSTOM-自定义,TIP-提醒,ROBOT-AI机器人,NOTICATION-群通知,TEAM_INVITE-邀请入群,TEAM_INVITE_REJECT-拒绝邀请,CUSTOM_TEAM_MSG -群组自定义系统通知',
`event_type` tinyint(4) DEFAULT '1' COMMENT '事件类型:1-会话类型消息(p2p消息、群聊消息、自定义系统通知、云信内置系统通知),2-登录事件,3-登出/离线事件,4-聊天室聊天消息,5-音视频时长、白板时长消息,6-音视频白板大小、下载地址消息,7-单聊消息撤回,8-群聊消息撤回,9-汇报主播、管理员进出聊天室事件消息,10-汇报专线电话通话结束回调抄送的消息,11-汇报短信回执抄送的消息,12-汇报短信上行消息,13-汇报用户进出音视频/白板房间的消息,14-汇报聊天室队列操作的事件消息,20-易盾异步反垃圾结果信息',
`remind_type` tinyint(4) DEFAULT '0' COMMENT '提醒类型:0-普通消息,1-客服进入,2-客户进入,3-客服进入欢迎提醒,4-敏感词命中提醒消息',
`conv_type` varchar(20) DEFAULT '' COMMENT '场景类型:TEAM',
`scene` tinyint(4) DEFAULT '0' COMMENT '场景:0-team,1-p2p,2-superTeam',
`text` varchar(5000) DEFAULT '' COMMENT '内容',
`attach` varchar(5000) DEFAULT '' COMMENT '附加消息',
`team_attach_type` tinyint(4) DEFAULT NULL COMMENT '群通知类型:默认null(普通消息),0-更新群,1-拉人入群,2-踢人出群,3-接受入群邀请,4-通过入群邀请,5-添加群管理员,6-移除群管理员,7-主动退群,8-解散群,9-转让群,10-更新群成员禁言状态',
`send_type` tinyint(4) DEFAULT '0' COMMENT '发送人类型:0-用户,1-客服,2-药师,3-医生',
`send_client_ip` varchar(20) DEFAULT '' COMMENT '发送端ip',
`send_client_port` varchar(5) DEFAULT '' COMMENT '发送端端口',
`send_client_type` varchar(10) DEFAULT '' COMMENT '发送客户端类型: AOS、IOS、PC、WINPHONE、WEB、REST',
`send_device_id` varchar(32) DEFAULT '' COMMENT '发送端设备编号',
`send_nick` varchar(50) DEFAULT '' COMMENT '发送人昵称',
`send_id` varchar(32) DEFAULT '' COMMENT '发送人id(对应客服表和用户表的accid)',
`send_at` bigint(11) DEFAULT NULL COMMENT '发送时间',
`msg_receipt_time` bigint(11) DEFAULT NULL COMMENT '已读回执时间戳,如果有此字段, 说明此时间戳之前的所有消息对方均已读',
`is_revoke` tinyint(4) DEFAULT '0' COMMENT '是否撤销:0-否,1-是',
`revoke_at` bigint(11) DEFAULT '0' COMMENT '撤销时间',
`custom_apns_text` varchar(200) DEFAULT '' COMMENT '自定义系统通知消息推送文本。仅在convType为CUSTOM_PERSON或CUSTOM_TEAM时含此字段',
`ext` varchar(64) DEFAULT '' COMMENT '消息扩展字段',
`antispam` varchar(12) DEFAULT '' COMMENT '标识是否被反垃圾(‘’,true,false)',
`yidun_res` varchar(500) DEFAULT '' COMMENT '易盾反垃圾的原始处理细节',
`msg_status` tinyint(4) DEFAULT '0' COMMENT '消息发送状态:0-发送成功,1-发送中,2-发送失败',
`status` tinyint(4) DEFAULT '0' COMMENT '状态:有效 0:无效',
PRIMARY KEY (`id`),
UNIQUE KEY `index_tt` (`id`,`team_msg_id`,`team_client_msg_id`) USING BTREE,
KEY `index_team_id_on_im_team_message` (`team_id`),
KEY `index_send_at_on_im_team_message` (`send_at`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='IM消息表';
SET FOREIGN_KEY_CHECKS = 1;
/*
Navicat Premium Data Transfer
Source Server : 192.168.89.53
Source Server Type : MySQL
Source Server Version : 50726
Source Host : 192.168.89.53:3306
Source Schema : ddky_im_bis
Target Server Type : MySQL
Target Server Version : 50726
File Encoding : 65001
Date: 08/03/2020 13:18:39
*/
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for im_team_message
-- ----------------------------
DROP TABLE IF EXISTS `im_team_message1`;
CREATE TABLE `im_team_message1` (
`id` bigint(20) NOT NULL COMMENT '主键id',
`team_msg_id` bigint(20) DEFAULT NULL COMMENT '群消息id(服务端生成消息id)',
`team_client_msg_id` varchar(32) DEFAULT '' COMMENT '群消息id(客户端生成)',
`team_id` bigint(20) DEFAULT NULL COMMENT '群组id(对应群组的accid)',
`msg_type` varchar(15) DEFAULT 'TEXT' COMMENT '消息类型:TEXT-文本,PICTURE-图片,AUDIO-音频,VIDEO-视频,FILE-文件,GEO-地理位置,CUSTOM-自定义,TIP-提醒,ROBOT-AI机器人,NOTICATION-群通知,TEAM_INVITE-邀请入群,TEAM_INVITE_REJECT-拒绝邀请,CUSTOM_TEAM_MSG -群组自定义系统通知',
`event_type` tinyint(4) DEFAULT '1' COMMENT '事件类型:1-会话类型消息(p2p消息、群聊消息、自定义系统通知、云信内置系统通知),2-登录事件,3-登出/离线事件,4-聊天室聊天消息,5-音视频时长、白板时长消息,6-音视频白板大小、下载地址消息,7-单聊消息撤回,8-群聊消息撤回,9-汇报主播、管理员进出聊天室事件消息,10-汇报专线电话通话结束回调抄送的消息,11-汇报短信回执抄送的消息,12-汇报短信上行消息,13-汇报用户进出音视频/白板房间的消息,14-汇报聊天室队列操作的事件消息,20-易盾异步反垃圾结果信息',
`remind_type` tinyint(4) DEFAULT '0' COMMENT '提醒类型:0-普通消息,1-客服进入,2-客户进入,3-客服进入欢迎提醒,4-敏感词命中提醒消息',
`conv_type` varchar(20) DEFAULT '' COMMENT '场景类型:TEAM',
`scene` tinyint(4) DEFAULT '0' COMMENT '场景:0-team,1-p2p,2-superTeam',
`text` varchar(5000) DEFAULT '' COMMENT '内容',
`attach` varchar(5000) DEFAULT '' COMMENT '附加消息',
`team_attach_type` tinyint(4) DEFAULT NULL COMMENT '群通知类型:默认null(普通消息),0-更新群,1-拉人入群,2-踢人出群,3-接受入群邀请,4-通过入群邀请,5-添加群管理员,6-移除群管理员,7-主动退群,8-解散群,9-转让群,10-更新群成员禁言状态',
`send_type` tinyint(4) DEFAULT '0' COMMENT '发送人类型:0-用户,1-客服,2-药师,3-医生',
`send_client_ip` varchar(20) DEFAULT '' COMMENT '发送端ip',
`send_client_port` varchar(5) DEFAULT '' COMMENT '发送端端口',
`send_client_type` varchar(10) DEFAULT '' COMMENT '发送客户端类型: AOS、IOS、PC、WINPHONE、WEB、REST',
`send_device_id` varchar(32) DEFAULT '' COMMENT '发送端设备编号',
`send_nick` varchar(50) DEFAULT '' COMMENT '发送人昵称',
`send_id` varchar(32) DEFAULT '' COMMENT '发送人id(对应客服表和用户表的accid)',
`send_at` bigint(11) DEFAULT NULL COMMENT '发送时间',
`msg_receipt_time` bigint(11) DEFAULT NULL COMMENT '已读回执时间戳,如果有此字段, 说明此时间戳之前的所有消息对方均已读',
`is_revoke` tinyint(4) DEFAULT '0' COMMENT '是否撤销:0-否,1-是',
`revoke_at` bigint(11) DEFAULT '0' COMMENT '撤销时间',
`custom_apns_text` varchar(200) DEFAULT '' COMMENT '自定义系统通知消息推送文本。仅在convType为CUSTOM_PERSON或CUSTOM_TEAM时含此字段',
`ext` varchar(64) DEFAULT '' COMMENT '消息扩展字段',
`antispam` varchar(12) DEFAULT '' COMMENT '标识是否被反垃圾(‘’,true,false)',
`yidun_res` varchar(500) DEFAULT '' COMMENT '易盾反垃圾的原始处理细节',
`msg_status` tinyint(4) DEFAULT '0' COMMENT '消息发送状态:0-发送成功,1-发送中,2-发送失败',
`status` tinyint(4) DEFAULT '0' COMMENT '状态:有效 0:无效',
PRIMARY KEY (`id`),
UNIQUE KEY `index_tt` (`id`,`team_msg_id`,`team_client_msg_id`) USING BTREE,
KEY `index_team_id_on_im_team_message` (`team_id`),
KEY `index_send_at_on_im_team_message` (`send_at`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='IM消息表';
SET FOREIGN_KEY_CHECKS = 1;
/*
Navicat Premium Data Transfer
Source Server : 192.168.89.53
Source Server Type : MySQL
Source Server Version : 50726
Source Host : 192.168.89.53:3306
Source Schema : ddky_im_bis
Target Server Type : MySQL
Target Server Version : 50726
File Encoding : 65001
Date: 08/03/2020 13:18:39
*/
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for im_team_message
-- ----------------------------
DROP TABLE IF EXISTS `im_team_message2`;
CREATE TABLE `im_team_message2` (
`id` bigint(20) NOT NULL COMMENT '主键id',
`team_msg_id` bigint(20) DEFAULT NULL COMMENT '群消息id(服务端生成消息id)',
`team_client_msg_id` varchar(32) DEFAULT '' COMMENT '群消息id(客户端生成)',
`team_id` bigint(20) DEFAULT NULL COMMENT '群组id(对应群组的accid)',
`msg_type` varchar(15) DEFAULT 'TEXT' COMMENT '消息类型:TEXT-文本,PICTURE-图片,AUDIO-音频,VIDEO-视频,FILE-文件,GEO-地理位置,CUSTOM-自定义,TIP-提醒,ROBOT-AI机器人,NOTICATION-群通知,TEAM_INVITE-邀请入群,TEAM_INVITE_REJECT-拒绝邀请,CUSTOM_TEAM_MSG -群组自定义系统通知',
`event_type` tinyint(4) DEFAULT '1' COMMENT '事件类型:1-会话类型消息(p2p消息、群聊消息、自定义系统通知、云信内置系统通知),2-登录事件,3-登出/离线事件,4-聊天室聊天消息,5-音视频时长、白板时长消息,6-音视频白板大小、下载地址消息,7-单聊消息撤回,8-群聊消息撤回,9-汇报主播、管理员进出聊天室事件消息,10-汇报专线电话通话结束回调抄送的消息,11-汇报短信回执抄送的消息,12-汇报短信上行消息,13-汇报用户进出音视频/白板房间的消息,14-汇报聊天室队列操作的事件消息,20-易盾异步反垃圾结果信息',
`remind_type` tinyint(4) DEFAULT '0' COMMENT '提醒类型:0-普通消息,1-客服进入,2-客户进入,3-客服进入欢迎提醒,4-敏感词命中提醒消息',
`conv_type` varchar(20) DEFAULT '' COMMENT '场景类型:TEAM',
`scene` tinyint(4) DEFAULT '0' COMMENT '场景:0-team,1-p2p,2-superTeam',
`text` varchar(5000) DEFAULT '' COMMENT '内容',
`attach` varchar(5000) DEFAULT '' COMMENT '附加消息',
`team_attach_type` tinyint(4) DEFAULT NULL COMMENT '群通知类型:默认null(普通消息),0-更新群,1-拉人入群,2-踢人出群,3-接受入群邀请,4-通过入群邀请,5-添加群管理员,6-移除群管理员,7-主动退群,8-解散群,9-转让群,10-更新群成员禁言状态',
`send_type` tinyint(4) DEFAULT '0' COMMENT '发送人类型:0-用户,1-客服,2-药师,3-医生',
`send_client_ip` varchar(20) DEFAULT '' COMMENT '发送端ip',
`send_client_port` varchar(5) DEFAULT '' COMMENT '发送端端口',
`send_client_type` varchar(10) DEFAULT '' COMMENT '发送客户端类型: AOS、IOS、PC、WINPHONE、WEB、REST',
`send_device_id` varchar(32) DEFAULT '' COMMENT '发送端设备编号',
`send_nick` varchar(50) DEFAULT '' COMMENT '发送人昵称',
`send_id` varchar(32) DEFAULT '' COMMENT '发送人id(对应客服表和用户表的accid)',
`send_at` bigint(11) DEFAULT NULL COMMENT '发送时间',
`msg_receipt_time` bigint(11) DEFAULT NULL COMMENT '已读回执时间戳,如果有此字段, 说明此时间戳之前的所有消息对方均已读',
`is_revoke` tinyint(4) DEFAULT '0' COMMENT '是否撤销:0-否,1-是',
`revoke_at` bigint(11) DEFAULT '0' COMMENT '撤销时间',
`custom_apns_text` varchar(200) DEFAULT '' COMMENT '自定义系统通知消息推送文本。仅在convType为CUSTOM_PERSON或CUSTOM_TEAM时含此字段',
`ext` varchar(64) DEFAULT '' COMMENT '消息扩展字段',
`antispam` varchar(12) DEFAULT '' COMMENT '标识是否被反垃圾(‘’,true,false)',
`yidun_res` varchar(500) DEFAULT '' COMMENT '易盾反垃圾的原始处理细节',
`msg_status` tinyint(4) DEFAULT '0' COMMENT '消息发送状态:0-发送成功,1-发送中,2-发送失败',
`status` tinyint(4) DEFAULT '0' COMMENT '状态:有效 0:无效',
PRIMARY KEY (`id`),
UNIQUE KEY `index_tt` (`id`,`team_msg_id`,`team_client_msg_id`) USING BTREE,
KEY `index_team_id_on_im_team_message` (`team_id`),
KEY `index_send_at_on_im_team_message` (`send_at`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='IM消息表';
SET FOREIGN_KEY_CHECKS = 1;
根据群id进行分库,根据群消息id进行分表,详细配置见下:
server.port=8888
spring.main.allow-bean-definition-overriding=true
#---------------------------------
# mybatis
#---------------------------------
mybatis.type-aliases-package=com.zzx.sharding.entity
#mybatis.type-handlers-package=com.example.typehandler
mybatis.configuration.map-underscore-to-camel-case=true
mybatis.configuration.default-fetch-size=100
mybatis.configuration.default-statement-timeout=3000
mybatis.mapper-locations=classpath*:mapper/*.xml
#--------------------------------
# druid
#---------------------------------
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.druid.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.druid.filters=stat,wall,log4j2
spring.datasource.druid.max-active=50
spring.datasource.druid.initial-size=2
spring.datasource.druid.max-wait=60000
spring.datasource.druid.min-idle=2
spring.datasource.druid.keep-alive=true
spring.datasource.druid.time-between-eviction-runs-millis=60000
spring.datasource.druid.min-evictable-idle-time-millis=300000
spring.datasource.druid.validation-query=select 'x'
spring.datasource.druid.test-while-idle=true
spring.datasource.druid.test-on-borrow=false
spring.datasource.druid.test-on-return=false
spring.datasource.druid.pool-prepared-statements=true
spring.datasource.druid.max-open-prepared-statements=20
spring.datasource.druid.connection-properties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000;
spring.datasource.druid.use-global-data-source-stat=true
spring.datasource.druid.web-stat-filter.enabled=true
spring.datasource.druid.web-stat-filter.url-pattern=/*
spring.datasource.druid.web-stat-filter.exclusions='*.gif,*.png,*.jpg,*.html,*.js,*.css,*.ico,/druid/*'
spring.datasource.druid.stat-view-servlet.enabled=true
spring.datasource.druid.stat-view-servlet.url-pattern=/druid/*
spring.datasource.druid.stat-view-servlet.reset-enable=true
spring.datasource.druid.stat-view-servlet.login-username=admin
spring.datasource.druid.stat-view-servlet.login-password=admin
# 配置日志输出
spring.datasource.druid.filter.log4j2.enabled=true
spring.datasource.druid.filter.log4j2.statement-create-after-log-enabled=false
spring.datasource.druid.filter.log4j2.statement-close-after-log-enabled=false
spring.datasource.druid.filter.log4j2.result-set-open-after-log-enabled=false
spring.datasource.druid.filter.log4j2.result-set-close-after-log-enabled=false
#--------------------------------
# ShardingSphere
#---------------------------------
#打印sql
spring.shardingsphere.props.sql.show=true
spring.shardingsphere.datasource.names=master0,slave0,master1,slave1
spring.shardingsphere.datasource.master0.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.master0.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.master0.url=jdbc:mysql://localhost:3342/im_bis?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8&autoReconnect=true&rewriteBatchedStatements=true
spring.shardingsphere.datasource.master0.username=root
spring.shardingsphere.datasource.master0.password=123456
spring.shardingsphere.datasource.slave0.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.slave0.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.slave0.url=jdbc:mysql://localhost:3343/im_bis?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8&autoReconnect=true&rewriteBatchedStatements=true
spring.shardingsphere.datasource.slave0.username=root
spring.shardingsphere.datasource.slave0.password=123456
spring.shardingsphere.datasource.master1.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.master1.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.master1.url=jdbc:mysql://localhost:3344/im_bis?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8&autoReconnect=true&rewriteBatchedStatements=true
spring.shardingsphere.datasource.master1.username=root
spring.shardingsphere.datasource.master1.password=123456
spring.shardingsphere.datasource.slave1.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.slave1.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.slave1.url=jdbc:mysql://localhost:3345/im_bis?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8&autoReconnect=true&rewriteBatchedStatements=true
spring.shardingsphere.datasource.slave1.username=root
spring.shardingsphere.datasource.slave1.password=123456
#根据群id分库
spring.shardingsphere.sharding.default-database-strategy.inline.sharding-column=team_id
spring.shardingsphere.sharding.default-database-strategy.inline.algorithm-expression=master$->{team_id % 2}
#根据群消息id分表
spring.shardingsphere.sharding.tables.im_team_message.actual-data-nodes=master$->{0..1}.im_team_message$->{0..2}
spring.shardingsphere.sharding.tables.im_team_message.table-strategy.inline.sharding-column=team_msg_id
spring.shardingsphere.sharding.tables.im_team_message.table-strategy.inline.algorithm-expression=im_team_message$->{team_msg_id % 3}
# 废弃
#spring.shardingsphere.sharding.tables.im_team_message.key-generator.column=id
#spring.shardingsphere.sharding.tables.im_team_message.key-generator.type=SNOWFLAKE
#spring.shardingsphere.sharding.tables.im_team_message.key-generator.props.worker.id=123
#指定master0为主库,slave0为它的从库
spring.shardingsphere.sharding.master-slave-rules.master0.master-data-source-name=master0
spring.shardingsphere.sharding.master-slave-rules.master0.slave-data-source-names=slave0
#指定master1为主库,slave1为它的从库
spring.shardingsphere.sharding.master-slave-rules.master1.master-data-source-name=master1
spring.shardingsphere.sharding.master-slave-rules.master1.slave-data-source-names=slave1
postman执行: localhost:8888/teamMessage/batchAdd
代码
@PostMapping("batchAdd")
public ServiceResponse batchAdd(HttpServletRequest request, HttpServletResponse response) throws IOException {
ServiceResponse result = new ServiceResponse<>();
for (int i = 0; i < 20; i++) {
TeamMessage vo = new TeamMessage();
vo.setSendAt(new Date().getTime());
vo.setTeamId(1000);
vo.setTeamClientMsgId(UUID.randomUUID().toString());
vo.setTeamMsgId(SnowIdUtils.uniqueLong());
vo.setId(SnowIdUtils.uniqueLong());
vo.setText("消息内容-"+UUID.randomUUID());
this.teamMessageServiceApi.insert(vo);
}
result.setCode(ResponseEnum.SUCCESS.getCode());
result.setMsg(ResponseEnum.SUCCESS.getName());
return result;
}
群id为1000时,路由到主库0,写入主库0成功
日志:
2020-03-11 18:25:06.525 INFO 46360 --- [nio-8888-exec-8] ShardingSphere-SQL : Actual SQL: master0 ::: INSERT IGNORE INTO ....
- 1
主库0:表中的数据根据群消息id路由到各表中:
主库1: 表中没有数据
群id为1001时,路由到主库1,写入主库1成功
日志:
2020-03-11 18:30:12.345 INFO 46360 --- [nio-8888-exec-8] ShardingSphere-SQL : Actual SQL: master1 ::: INSERT IGNORE INTO ....
- 1
主库1:表中的数据根据群消息id路由到各表中:
主库0: 表中没有新增数据
分库验证成功!
查询所有数据
由于分库,且每个主库仅一个从库,我们执行查询所有数据操作,shardingsphere会帮我们从各从库各分表中采用聚合的方式获取数据。后面会根据shardingsphere原理单独说明如何对聚合的数据进行操作。
控制台sql日志:
2020-03-11 18:35:29.399 INFO 46360 --- [nio-8888-exec-1] ShardingSphere-SQL : Rule Type: sharding
2020-03-11 18:35:29.399 INFO 46360 --- [nio-8888-exec-1] ShardingSphere-SQL : Logic SQL: SELECT id,。。。。。 FROM im_team_message WHERE STATUS = 0
2020-03-11 18:35:29.399 INFO 46360 --- [nio-8888-exec-1] ShardingSphere-SQL : SQLStatement: SelectStatement(super=DQLStatement(super=AbstractSQLStatement(type=DQL, tables=Tables(tables=[Table(name=im_team_message, alias=Optional.absent())]), routeConditions=Conditions(orCondition=OrCondition(andConditions=[])), encryptConditions=Conditions(orCondition=OrCondition(andConditions=[])), sqlTokens=[TableToken(tableName=im_team_message, quoteCharacter=NONE, schemaNameLength=0)], parametersIndex=0, Logic SQL: SELECT id,。。。。。 FROM im_team_message WHERE status = 0)), containStar=false, firstSelectItemStartIndex=14, selectListStopIndex=410, groupByLastIndex=0, items=[CommonSelectItem(expression=id, alias=Optional.absent()), CommonSelectItem(expression=team_msg_id, alias=Optional.absent()), CommonSelectItem(expression=team_client_msg_id, alias=Optional.absent()), CommonSelectItem(expression=msg_type, alias=Optional.absent()), CommonSelectItem(expression=remind_type, alias=Optional.absent()), CommonSelectItem(expression=conv_type, alias=Optional.absent()), CommonSelectItem(expression=scene, alias=Optional.absent()), CommonSelectItem(expression=text, alias=Optional.absent()), CommonSelectItem(expression=team_attach_type, alias=Optional.absent()), CommonSelectItem(expression=send_type, alias=Optional.absent()), CommonSelectItem(expression=send_client_ip, alias=Optional.absent()), CommonSelectItem(expression=send_client_port, alias=Optional.absent()), CommonSelectItem(expression=send_client_type, alias=Optional.absent()), CommonSelectItem(expression=send_device_id, alias=Optional.absent()), CommonSelectItem(expression=send_nick, alias=Optional.absent()), CommonSelectItem(expression=team_id, alias=Optional.absent()), CommonSelectItem(expression=send_id, alias=Optional.absent()), CommonSelectItem(expression=send_at, alias=Optional.absent()), CommonSelectItem(expression=msg_receipt_time, alias=Optional.absent()), CommonSelectItem(expression=is_revoke, alias=Optional.absent()), CommonSelectItem(expression=revoke_at, alias=Optional.absent()), CommonSelectItem(expression=msg_status, alias=Optional.absent()), CommonSelectItem(expression=event_type, alias=Optional.absent()), CommonSelectItem(expression=status, alias=Optional.absent()), CommonSelectItem(expression=attach, alias=Optional.absent()), CommonSelectItem(expression=custom_apns_text, alias=Optional.absent()), CommonSelectItem(expression=ext, alias=Optional.absent()), CommonSelectItem(expression=antispam, alias=Optional.absent()), CommonSelectItem(expression=yidun_res, alias=Optional.absent())], groupByItems=[], orderByItems=[], limit=null, subqueryStatement=null, subqueryStatements=[], subqueryConditions=[])
2020-03-11 18:35:29.399 INFO 46360 --- [nio-8888-exec-1] ShardingSphere-SQL : Actual SQL: slave0 ::: select 。。。。
。。。
2020-03-11 18:35:29.399 INFO 46360 --- [nio-8888-exec-1] ShardingSphere-SQL : Actual SQL: slave1 ::: select
。。。
部分日志省略,从上面可以看得出,查询所有数据时候,shardingsphere从从库0和从库1各表中将数据进行聚合处理返回给调用接口。
返回数据
由于执行了两次两个群组的新增数据,总共40条数据
分库分表验证成功!
问题记录
springboot2.1.5默认使用mysql-connECTOR-java8.x的版本,这个版本的驱动使用shardingsphere时会有bug,推荐使用mysql-connector-java5.1.47版本