Java猿社區—ShardingSphere-4.0.1之實現讀寫分離
文章目錄
參考：
基於Docker的Mysql主從複製搭建
ShardingSphere官網
技術體系
Springboot2.1.5 + shardingsphere4.0.1 + Mysql5.7 + mysql-connector-java5.1.47
背景
目前公司正在進行的在線客服IM項目，考慮未來會話消息請求流量劇增以及消息存儲帶來的挑戰，單一數據庫無法支撐，需要分庫&分表、讀寫分離以應對高併發帶來的挑戰。
基於市面上較爲流行的幾個數據庫中間件我們結合公司技術體系，再三考慮，決定使用ShardingSphere作爲在線客服項目的數據庫中間件。
ShardingSphere介紹
Apache ShardingSphere(Incubator) 是一套開源的分佈式數據庫中間件解決方案組成的生態圈，它由Sharding-JDBC、Sharding-Proxy和Sharding-Sidecar（規劃中）這3款相互獨立，卻又能夠混合部署配合使用的產品組成。它們均提供標準化的數據分片、分佈式事務和數據庫治理功能，可適用於如Java同構、異構語言、雲原生等各種多樣化的應用場景。（來自官網）
注意事項
從ShardingSphere推出4.0.0-RC2版本之後，通過屬性文件application.properties配置集成是會有問題的：
- springboot2.1.5 + mysql-connector-java5.x + shardingsphere-4.0.0-RC1 + mybatis-spring-boot-starter2.0.1版本後功能正常
- springboot2.1.5 + mysql-connector-java5.x + shardingsphere-4.0.0-RC2或3或4.0.1 + mybatis-spring-boot-starter2.0.1的時候，第一先報錯required a bean of type ‘com.zzx.sharding.mapper.TeamMessageMapper’ that could not be found.，然後再啓動類上添加@MapperScan註解後，報錯Caused by: java.lang.IllegalArgumentException: Property ‘sqlSessionFactory’ or ‘sqlSessionTemplate’ are required
這是shardsphere4.0.0-RC2發佈之後的一個bug，具體是數據源沒有成功注入。
下面通過手動注入數據源的方式解決此問題。
ShardingShpere支持的功能
數據分片
- 分庫、分表
- 讀寫分離
- 分片策略定製化
- 無中心化分佈式主鍵
分佈式事務
- 標準化事務接口
- XA強一致事務
- 柔性事務
技術準備
mysql安裝配置
具體安裝配置請參見網絡博客：如基於Docker的Mysql主從複製搭建
POM配置
<?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>4.0.1</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>${mybatis-spring-boot}</version>
</dependency>
<!--mybatis驅動-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector-java.version}</version>
</dependency>
<!--druid數據源-->
<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>${shardingsphere.version}</version>
</dependency>
<!--lombok實體工具-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>${fastjson.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
讀寫分離——一主雙從
mysql配置環境
主庫： localhost:3339/im_bis
從庫0: localhost:3340/im_bis
從庫1: localhost:3341/im_bis
配置從庫0和從庫1作爲主庫的從庫，具體配置參考上面提到的基於Docker搭建主從複製網站
sql腳本
DROP SCHEMA IF EXISTS im_bis;
CREATE SCHEMA IF NOT EXISTS im_bis;
use im_bis;
/*
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_message`;
CREATE TABLE `im_team_message` (
`id` bigint(20) NOT NULL COMMENT '主鍵id',
`team_msg_id` bigint(20) DEFAULT NULL COMMENT '羣消息id(服務端生成消息id)',
`team_client_msg_id` varchar(32) DEFAULT '' COMMENT '羣消息id（客戶端生成）',
`team_id` varchar(32) DEFAULT '' COMMENT '羣組id（對應羣組的accid）',
`msg_type` varchar(15) DEFAULT 'TEXT' COMMENT '消息類型：TEXT-文本，PICTURE-圖片，AUDIO-音頻，VIDEO-視頻，FILE-文件，GEO-地理位置，CUSTOM-自定義，TIP-提醒，ROBOT-AI機器人，NOTICATION-羣通知，TEAM_INVITE-邀請入羣，TEAM_INVITE_REJECT-拒絕邀請，CUSTOM_TEAM_MSG -羣組自定義系統通知',
`event_type` tinyint(4) DEFAULT '1' COMMENT '事件類型：1-會話類型消息（p2p消息、羣聊消息、自定義系統通知、雲信內置系統通知），2-登錄事件，3-登出/離線事件，4-聊天室聊天消息，5-音視頻時長、白板時長消息，6-音視頻白板大小、下載地址消息，7-單聊消息撤回，8-羣聊消息撤回，9-彙報主播、管理員進出聊天室事件消息，10-彙報專線電話通話結束回調抄送的消息，11-彙報短信回執抄送的消息，12-彙報短信上行消息，13-彙報用戶進出音視頻/白板房間的消息，14-彙報聊天室隊列操作的事件消息，20-易盾異步反垃圾結果信息',
`remind_type` tinyint(4) DEFAULT '0' COMMENT '提醒類型：0-普通消息，1-客服進入，2-客戶進入，3-客服進入歡迎提醒，4-敏感詞命中提醒消息',
`conv_type` varchar(20) DEFAULT '' COMMENT '場景類型：TEAM',
`scene` tinyint(4) DEFAULT '0' COMMENT '場景：0-team，1-p2p，2-superTeam',
`text` varchar(5000) DEFAULT '' COMMENT '內容',
`attach` varchar(5000) DEFAULT '' COMMENT '附加消息',
`team_attach_type` tinyint(4) DEFAULT NULL COMMENT '羣通知類型：默認null（普通消息），0-更新羣，1-拉人入羣，2-踢人出羣，3-接受入羣邀請，4-通過入羣邀請，5-添加羣管理員，6-移除羣管理員，7-主動退羣，8-解散羣，9-轉讓羣，10-更新羣成員禁言狀態',
`send_type` tinyint(4) DEFAULT '0' COMMENT '發送人類型：0-用戶，1-客服，2-藥師，3-醫生',
`send_client_ip` varchar(20) DEFAULT '' COMMENT '發送端ip',
`send_client_port` varchar(5) DEFAULT '' COMMENT '發送端端口',
`send_client_type` varchar(10) DEFAULT '' COMMENT '發送客戶端類型： AOS、IOS、PC、WINPHONE、WEB、REST',
`send_device_id` varchar(32) DEFAULT '' COMMENT '發送端設備編號',
`send_nick` varchar(50) DEFAULT '' COMMENT '發送人暱稱',
`send_id` varchar(32) DEFAULT '' COMMENT '發送人id（對應客服表和用戶表的accid）',
`send_at` bigint(11) DEFAULT NULL COMMENT '發送時間',
`msg_receipt_time` bigint(11) DEFAULT NULL COMMENT '已讀回執時間戳，如果有此字段, 說明此時間戳之前的所有消息對方均已讀',
`is_revoke` tinyint(4) DEFAULT '0' COMMENT '是否撤銷：0-否，1-是',
`revoke_at` bigint(11) DEFAULT '0' COMMENT '撤銷時間',
`custom_apns_text` varchar(200) DEFAULT '' COMMENT '自定義系統通知消息推送文本。僅在convType爲CUSTOM_PERSON或CUSTOM_TEAM時含此字段',
`ext` varchar(64) DEFAULT '' COMMENT '消息擴展字段',
`antispam` varchar(12) DEFAULT '' COMMENT '標識是否被反垃圾(‘’，true，false)',
`yidun_res` varchar(500) DEFAULT '' COMMENT '易盾反垃圾的原始處理細節',
`msg_status` tinyint(4) DEFAULT '0' COMMENT '消息發送狀態：0-發送成功，1-發送中，2-發送失敗',
`status` tinyint(4) DEFAULT '0' COMMENT '狀態：有效 0：無效',
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 AUTO_INCREMENT=2104820 DEFAULT CHARSET=utf8mb4 COMMENT='IM消息表';
SET FOREIGN_KEY_CHECKS = 1;
配置讀寫分離
application.properties
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
# 配置日誌輸出
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
# ---------------------------------
spring.shardingsphere.datasource.names=master,slave0,slave1
# 數據源 主庫
spring.shardingsphere.datasource.master.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.master.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.master.url=jdbc:mysql://localhost:3339/im_bis?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8&autoReconnect=true&rewriteBatchedStatements=true
spring.shardingsphere.datasource.master.username=root
spring.shardingsphere.datasource.master.password=123456
# 數據源 從庫
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:3340/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
# 數據源 從庫
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:3341/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
MasterProp
package com.zzx.sharding.config;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
/**
* @author zhouzhixiang
* @company 叮噹快藥科技集團有限公司
* @Date 2020-03-15
*/
@ConfigurationProperties(prefix = "spring.shardingsphere.datasource.master")
@Data
public class MasterProp {
private String url;
private String username;
private String password;
private String type;
private String driverClassName;
}
Slave0Prop
package com.zzx.sharding.config;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
/**
* @author zhouzhixiang
* @company 叮噹快藥科技集團有限公司
* @Date 2020-03-15
*/
@ConfigurationProperties(prefix = "spring.shardingsphere.datasource.slave0")
@Data
public class Slave0Prop {
private String url;
private String username;
private String password;
private String type;
private String driverClassName;
}
Slave1Prop
package com.zzx.sharding.config;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
/**
* @author zhouzhixiang
* @company 叮噹快藥科技集團有限公司
* @Date 2020-03-15
*/
@ConfigurationProperties(prefix = "spring.shardingsphere.datasource.slave1")
@Data
public class Slave1Prop {
private String url;
private String username;
private String password;
private String type;
private String driverClassName;
}
DataSourceConfig
package com.zzx.sharding.config;
import com.alibaba.druid.pool.DruidDataSource;
import com.zzx.sharding.utils.DataSourceUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.shardingsphere.api.config.masterslave.LoadBalanceStrategyConfiguration;
import org.apache.shardingsphere.api.config.masterslave.MasterSlaveRuleConfiguration;
import org.apache.shardingsphere.api.config.sharding.KeyGeneratorConfiguration;
import org.apache.shardingsphere.api.config.sharding.ShardingRuleConfiguration;
import org.apache.shardingsphere.api.config.sharding.TableRuleConfiguration;
import org.apache.shardingsphere.shardingjdbc.api.ShardingDataSourceFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.*;
/**
* @author zhouzhixiang
*/
@Configuration
@EnableTransactionManagement(proxyTargetClass = true)
@EnableConfigurationProperties({MasterProp.class, Slave0Prop.class, Slave1Prop.class})
@Slf4j
@MapperScan(basePackages = "com.zzx.sharding.mapper", sqlSessionTemplateRef = "sqlSessionTemplate")
public class DataSourceConfig {
/**
* 配置數據源0，數據源的名稱最好要有一定的規則，方便配置分庫的計算規則
*
* @return
*/
@Bean(name = "master")
public DataSource master(MasterProp masterProp) {
Map<String, Object> dsMap = new HashMap<>();
dsMap.put("type", masterProp.getType());
dsMap.put("url", masterProp.getUrl());
dsMap.put("username", masterProp.getUsername());
dsMap.put("password", masterProp.getPassword());
dsMap.put("driverClassName", masterProp.getDriverClassName());
DruidDataSource ds = (DruidDataSource) DataSourceUtil.buildDataSource(dsMap);
// 每個分區最大的連接數
ds.setMaxActive(20);
// 每個分區最小的連接數
ds.setMinIdle(5);
return ds;
}
/**
* 配置數據源0，數據源的名稱最好要有一定的規則，方便配置分庫的計算規則
*
* @return
*/
@Bean(name = "slave0")
public DataSource slave0(Slave0Prop slave0Prop) {
Map<String, Object> dsMap = new HashMap<>();
dsMap.put("type", slave0Prop.getType());
dsMap.put("url", slave0Prop.getUrl());
dsMap.put("username", slave0Prop.getUsername());
dsMap.put("password", slave0Prop.getPassword());
dsMap.put("driverClassName", slave0Prop.getDriverClassName());
DruidDataSource ds = (DruidDataSource) DataSourceUtil.buildDataSource(dsMap);
// 每個分區最大的連接數
ds.setMaxActive(20);
// 每個分區最小的連接數
ds.setMinIdle(5);
return ds;
}
/**
* 配置數據源0，數據源的名稱最好要有一定的規則，方便配置分庫的計算規則
*
* @return
*/
@Bean(name = "slave1")
public DataSource slave1(Slave1Prop slave1Prop) {
Map<String, Object> dsMap = new HashMap<>();
dsMap.put("type", slave1Prop.getType());
dsMap.put("url", slave1Prop.getUrl());
dsMap.put("username", slave1Prop.getUsername());
dsMap.put("password", slave1Prop.getPassword());
dsMap.put("driverClassName", slave1Prop.getDriverClassName());
DruidDataSource ds = (DruidDataSource) DataSourceUtil.buildDataSource(dsMap);
// 每個分區最大的連接數
ds.setMaxActive(20);
// 每個分區最小的連接數
ds.setMinIdle(5);
return ds;
}
@Bean("dataSource")
public DataSource dataSource(@Qualifier("master") DataSource master, @Qualifier("slave0") DataSource slave0, @Qualifier("slave1") DataSource slave1) throws SQLException {
// 配置真實數據源
Map<String, DataSource> dataSourceMap = new HashMap<>();
dataSourceMap.put("master", master);
dataSourceMap.put("slave0", slave0);
dataSourceMap.put("slave1", slave1);
List<String> slaveList = new ArrayList<>();
slaveList.add("slave0");
slaveList.add("slave1");
// 從庫負載策略
LoadBalanceStrategyConfiguration loadBalanceStrategyConfiguration = new LoadBalanceStrategyConfiguration("round_robin");
MasterSlaveRuleConfiguration masterSlaveRuleConfiguration = new MasterSlaveRuleConfiguration("ms", "master", slaveList, loadBalanceStrategyConfiguration);
// 打開shardingsphere sql日誌
Properties properties = new Properties();
properties.setProperty("sql.show", Boolean.TRUE.toString());
// 配置分片規則
ShardingRuleConfiguration shardingRuleConfig = new ShardingRuleConfiguration();
//TableRuleConfiguration orderTableRuleConfig = new TableRuleConfiguration("t_order", "ds${0..1}.t_order_${0..1}");
// 配置分庫 + 分表策略
//orderTableRuleConfig.setDatabaseShardingStrategyConfig(new InlineShardingStrategyConfiguration("user_id", "ds${user_id % 2}"));
//orderTableRuleConfig.setTableShardingStrategyConfig(new InlineShardingStrategyConfiguration("order_id", "t_order_${order_id % 2}"));
//shardingRuleConfig.getTableRuleConfigs().add(orderTableRuleConfig);
shardingRuleConfig.getMasterSlaveRuleConfigs().add(masterSlaveRuleConfiguration);
shardingRuleConfig.getTableRuleConfigs().add(getImTeamMessageRuleConfiguration());
// 獲取數據源對象
DataSource dataSource = ShardingDataSourceFactory.createDataSource(dataSourceMap, shardingRuleConfig, properties);
return dataSource;
}
/** 消息表——im_team_message */
TableRuleConfiguration getImTeamMessageRuleConfiguration() {
TableRuleConfiguration result = new TableRuleConfiguration("im_team_message");
result.setKeyGeneratorConfig(getImTeamMessageKeyGeneratorConfiguration());
return result;
}
private static KeyGeneratorConfiguration getImTeamMessageKeyGeneratorConfiguration() {
KeyGeneratorConfiguration result = new KeyGeneratorConfiguration("SNOWFLAKE", "id");
return result;
}
/** 消息表——im_team_message */
@Bean
public DataSourceTransactionManager shardTransactionManager(@Qualifier("dataSource") DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
@Bean("sqlSessionFactory")
@Primary
public SqlSessionFactory sqlSessionFactory(@Qualifier("dataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mapper/*.xml"));
return bean.getObject();
}
@Bean("sqlSessionTemplate")
@Primary
public SqlSessionTemplate sqlSessionTemplate(@Qualifier("sqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
驗證
添加數據——寫入主庫
postman執行： localhost:8888/teamMessage/batchAdd
代碼
@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("消息內容-"+UUID.randomUUID());
this.teamMessageServiceApi.insert(vo);
}
result.setCode(ResponseEnum.SUCCESS.getCode());
result.setMsg(ResponseEnum.SUCCESS.getName());
return result;
}
shardingsphere日誌
2020-03-11 11:19:24.865 INFO 39211 --- [nio-8888-exec-2] ShardingSphere-SQL : Rule Type: master-slave
2020-03-11 11:19:24.865 INFO 39211 --- [nio-8888-exec-2] ShardingSphere-SQL : SQL: INSERT IGNORE INTO
INSERT IGNORE INTO im_team_message ( id, team_msg_id, team_client_msg_id, remind_type, scene, text, team_attach_type, send_type, team_id, send_at, is_revoke, msg_status, STATUS )
VALUES
( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? ) ::: DataSources: master
寫入主庫成功
查詢數據——從庫查詢
查詢所有數據
從庫負載均衡算法類型爲輪詢
控制檯sql日誌(從從庫0查詢數據)：
SELECT
id,
team_msg_id,
team_client_msg_id,
msg_type,
remind_type,
conv_type,
scene,
text,
team_attach_type,
send_type,
send_client_ip,
send_client_port,
send_client_type,
send_device_id,
send_nick,
team_id,
send_id,
send_at,
msg_receipt_time,
is_revoke,
revoke_at,
msg_status,
event_type,
STATUS,
attach,
custom_apns_text,
ext,
antispam,
yidun_res
FROM
im_team_message
WHERE
STATUS = 0
::: DataSources: slave0
控制檯sql日誌(從從庫1查詢數據)：
SELECT
id,
team_msg_id,
team_client_msg_id,
msg_type,
remind_type,
conv_type,
scene,
text,
team_attach_type,
send_type,
send_client_ip,
send_client_port,
send_client_type,
send_device_id,
send_nick,
team_id,
send_id,
send_at,
msg_receipt_time,
is_revoke,
revoke_at,
msg_status,
event_type,
STATUS,
attach,
custom_apns_text,
ext,
antispam,
yidun_res
FROM
im_team_message
WHERE
STATUS = 0
::: DataSources: slave1
成功！
問題記錄
springboot2.1.5默認使用mysql-connECTOR-java8.x的版本，這個版本的驅動使用shardingsphere時會有bug，推薦使用mysql-connector-java5.1.47版本
