sharding-jdbc-spring-boot-starter
集成 <parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>shatding-springboot-mybatis-generator</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>shatding-springboot-mybatis-generator</name>
<description>SpringBoot2.x整合MyBatisGenerator 以及分库分表插件</description>
<properties>
<sharding.jdbc.version>3.0.0</sharding.jdbc.version>
<mybatis.version>1.3.0</mybatis.version>
<druid.version>1.1.10</druid.version>
<mysql.version>5.1.38</mysql.version>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<dependency>
<groupId>io.shardingsphere</groupId>
<artifactId>sharding-jdbc-spring-boot-starter</artifactId>
<version>${sharding.jdbc.version}</version>
</dependency>
创建测试数据局test_order
。分别创建三张表t_address
, t_user0
,t_user1
。这里假设t_user这个预计随着系统的运行。公司发展很好,以后数据量会暴增。所以提前进行水平分片存储。相对于垂直分片,它不再将数据根据业务逻辑分类,而是通过某个字段(或某几个字段),根据某种规则将数据分散至多个库或表中,每个分片仅包含数据的一部分。这样单表数据量降下来了,mysql的B+树的检索效率就提高了
CREATE TABLE `t_address` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`code` varchar(64) DEFAULT NULL COMMENT '编码',
`name` varchar(64) DEFAULT NULL COMMENT '名称',
`pid` varchar(64) NOT NULL DEFAULT '0' COMMENT '父id',
`type` int(11) DEFAULT NULL COMMENT '1国家2省3市4县区',
`lit` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=21 DEFAULT CHARSET=utf8;
CREATE TABLE `t_user0` (
`id` bigint(20) NOT NULL,
`name` varchar(64) DEFAULT NULL COMMENT '名称',
`city_id` int(12) DEFAULT NULL COMMENT '城市',
`sex` tinyint(1) DEFAULT NULL COMMENT '性别',
`phone` varchar(32) DEFAULT NULL COMMENT '电话',
`email` varchar(32) DEFAULT NULL COMMENT '邮箱',
`create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '创建时间',
`password` varchar(32) DEFAULT NULL COMMENT '密码',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `t_user1` (
`id` bigint(20) NOT NULL,
`name` varchar(64) DEFAULT NULL COMMENT '名称',
`city_id` int(12) DEFAULT NULL COMMENT '城市',
`sex` tinyint(1) DEFAULT NULL COMMENT '性别',
`phone` varchar(32) DEFAULT NULL COMMENT '电话',
`email` varchar(32) DEFAULT NULL COMMENT '邮箱',
`create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '创建时间',
`password` varchar(32) DEFAULT NULL COMMENT '密码',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
下面就是基本的curd骚操作配置了
public class User {
private Long id;
private String name;
private String phone;
private String email;
private String password;
private Integer cityId;
private Date createTime;
private Integer sex;
}
public class Address {
private Long id;
private String code;
private String name;
private String pid;
private Integer type;
private Integer lit;
}
@Mapper
public interface AddressMapper {
/**
* 保存
*/
void save(Address address);
/**
* 查询
* @param id
* @return
*/
Address get(Long id);
}
@Mapper
public interface UserMapper {
/**
* 保存
*/
void save(User user);
/**
* 查询
* @param id
* @return
*/
User get(Long id);
}
UserController
@Controller
public class UserController {
@Autowired
private UserMapper userMapper;
@RequestMapping("/user/save")
@ResponseBody
public String save() {
for (int i = 0; i <10 ; i++) {
User user=new User();
user.setName("test"+i);
user.setCityId(1%2==0?1:2);
user.setCreateTime(new Date());
user.setSex(i%2==0?1:2);
user.setPhone("11111111"+i);
user.setEmail("xxxxx");
user.setCreateTime(new Date());
user.setPassword("eeeeeeeeeeee");
userMapper.save(user);
}
return "success";
}
@RequestMapping("/user/get/{id}")
@ResponseBody
public User get(@PathVariable Long id) {
User user = userMapper.get(id);
System.out.println(user.getId());
return user;
}
}
AddressController
@Controller
public class AddressController {
@Autowired
private AddressMapper addressMapper;
@RequestMapping("/address/save")
@ResponseBody
public String save() {
for (int i = 0; i <10 ; i++) {
Address address=new Address();
address.setCode("code_"+i);
address.setName("name_"+i);
address.setPid(i+"");
address.setType(0);
address.setLit(i%2==0?1:2);
addressMapper.save(address);
}
return "success";
}
@RequestMapping("/address/get/{id}")
@ResponseBody
public Address get(@PathVariable Long id) {
return addressMapper.get(id);
}
}
AddressMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.mapper.AddressMapper">
<insert id="save" parameterType="Address">
INSERT INTO t_address(code,name,pid,type,lit)
VALUES
(
#{code},#{name},#{pid},#{type},#{lit}
)
</insert>
<select id="get" parameterType="long" resultType="Address">
select * from t_address where id = #{id}
</select>
</mapper>
UserMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.mapper.UserMapper">
<insert id="save" parameterType="User">
INSERT INTO t_user(name,phone,email,city_id,sex,password)
VALUES
(
#{name},#{phone},#{email},#{cityId},#{sex},#{password}
)
</insert>
<select id="get" parameterType="long" resultType="User">
select * from t_user where id = #{id}
</select>
</mapper>
server:
port: 8080
spring:
application:
name: shatding-springboot-mybatis
mybatis:
mapper-locations: classpath:mybatis/mapper/*.xml
type-aliases-package: com.example.entity
sharding:
jdbc:
datasource:
names: ds0
# 数据源ds0
ds0:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/test_order
username: root
password: 123456
config:
sharding:
props:
sql.show: true
tables:
t_user: #t_user表
key-generator-column-name: id #主键
actual-data-nodes: ds0.t_user${0..1} #数据节点,均匀分布
table-strategy: #分表策略
inline: #行表达式
sharding-column: sex
algorithm-expression: t_user${sex % 2} #按模运算分配
一个简单的水平分片单库分表就完成了。进行测试就发现数据分别存储到t_user0和t_user1两个表中。这里采用的事按照字段sex
取模分片存储。
CREATE TABLE `t_address` (
`id` bigint(20) NOT NULL,
`code` varchar(64) DEFAULT NULL COMMENT '编码',
`name` varchar(64) DEFAULT NULL COMMENT '名称',
`pid` varchar(64) NOT NULL DEFAULT '0' COMMENT '父id',
`type` int(11) DEFAULT NULL COMMENT '1国家2省3市4县区',
`lit` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `t_user0` (
`id` bigint(20) NOT NULL,
`name` varchar(64) DEFAULT NULL COMMENT '名称',
`city_id` int(12) DEFAULT NULL COMMENT '城市',
`sex` tinyint(1) DEFAULT NULL COMMENT '性别',
`phone` varchar(32) DEFAULT NULL COMMENT '电话',
`email` varchar(32) DEFAULT NULL COMMENT '邮箱',
`create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '创建时间',
`password` varchar(32) DEFAULT NULL COMMENT '密码',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `t_user1` (
`id` bigint(20) NOT NULL,
`name` varchar(64) DEFAULT NULL COMMENT '名称',
`city_id` int(12) DEFAULT NULL COMMENT '城市',
`sex` tinyint(1) DEFAULT NULL COMMENT '性别',
`phone` varchar(32) DEFAULT NULL COMMENT '电话',
`email` varchar(32) DEFAULT NULL COMMENT '邮箱',
`create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '创建时间',
`password` varchar(32) DEFAULT NULL COMMENT '密码',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
修改分配规则
server:
port: 9900
spring:
application:
name: shard-jdbc-starter
# mybatis
mybatis:
mapper-locations: classpath:mybatis/mapper/*.xml
type-aliases-package: com.example.entity
###数据源名称,多数据源以逗号分隔
sharding:
jdbc:
datasource:
names: ds0,ds1
# 数据源ds0
ds0:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/order1
username: root
password: 123456
# 数据源ds1
ds1:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/order2
username: root
password: 123456
config:
sharding:
props:
sql.show: true
tables:
t_user: #t_user表
key-generator-column-name: id #主键
actual-data-nodes: ds${0..1}.t_user${0..1} #数据节点,均匀分布
database-strategy: #分库策略
inline: #行表达式
sharding-column: city_id #列名称,多个列以逗号分隔
algorithm-expression: ds${city_id % 2} #按模运算分配
table-strategy: #分表策略
inline: #行表达式
sharding-column: sex
algorithm-expression: t_user${sex % 2}
t_address:
key-generator-column-name: id
actual-data-nodes: ds${0..1}.t_address
database-strategy:
inline:
sharding-column: lit
algorithm-expression: ds${lit % 2}
分库又分表就完成了,测试over。
数据分片
sharding.jdbc.datasource.names=ds0,ds1
sharding.jdbc.datasource.ds0.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.ds0.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.ds0.url=jdbc:mysql://localhost:3306/ds0
sharding.jdbc.datasource.ds0.username=root
sharding.jdbc.datasource.ds0.password=
sharding.jdbc.datasource.ds1.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.ds1.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.ds1.url=jdbc:mysql://localhost:3306/ds1
sharding.jdbc.datasource.ds1.username=root
sharding.jdbc.datasource.ds1.password=
sharding.jdbc.config.sharding.tables.t_order.actual-data-nodes=ds$->{0..1}.t_order$->{0..1}
sharding.jdbc.config.sharding.tables.t_order.table-strategy.inline.sharding-column=order_id
sharding.jdbc.config.sharding.tables.t_order.table-strategy.inline.algorithm-expression=t_order$->{order_id % 2}
sharding.jdbc.config.sharding.tables.t_order.key-generator-column-name=order_id
sharding.jdbc.config.sharding.tables.t_order_item.actual-data-nodes=ds$->{0..1}.t_order_item$->{0..1}
sharding.jdbc.config.sharding.tables.t_order_item.table-strategy.inline.sharding-column=order_id
sharding.jdbc.config.sharding.tables.t_order_item.table-strategy.inline.algorithm-expression=t_order_item$->{order_id % 2}
sharding.jdbc.config.sharding.tables.t_order_item.key-generator-column-name=order_item_id
sharding.jdbc.config.sharding.binding-tables=t_order,t_order_item
sharding.jdbc.config.sharding.broadcast-tables=t_config
sharding.jdbc.config.sharding.default-database-strategy.inline.sharding-column=user_id
sharding.jdbc.config.sharding.default-database-strategy.inline.algorithm-expression=ds$->{user_id % 2}
读写分离
harding.jdbc.datasource.names=master,slave0,slave1
sharding.jdbc.datasource.master.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.master.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.master.url=jdbc:mysql://localhost:3306/master
sharding.jdbc.datasource.master.username=root
sharding.jdbc.datasource.master.password=
sharding.jdbc.datasource.slave0.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.slave0.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.slave0.url=jdbc:mysql://localhost:3306/slave0
sharding.jdbc.datasource.slave0.username=root
sharding.jdbc.datasource.slave0.password=
sharding.jdbc.datasource.slave1.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.slave1.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.slave1.url=jdbc:mysql://localhost:3306/slave1
sharding.jdbc.datasource.slave1.username=root
sharding.jdbc.datasource.slave1.password=
sharding.jdbc.config.masterslave.load-balance-algorithm-type=round_robin
sharding.jdbc.config.masterslave.name=ms
sharding.jdbc.config.masterslave.master-data-source-name=master
sharding.jdbc.config.masterslave.slave-data-source-names=slave0,slave1
sharding.jdbc.config.props.sql.show=true
数据分片 + 读写分离
sharding.jdbc.datasource.names=master0,master1,master0slave0,master0slave1,master1slave0,master1slave1
sharding.jdbc.datasource.master0.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.master0.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.master0.url=jdbc:mysql://localhost:3306/master0
sharding.jdbc.datasource.master0.username=root
sharding.jdbc.datasource.master0.password=
sharding.jdbc.datasource.master0slave0.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.master0slave0.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.master0slave0.url=jdbc:mysql://localhost:3306/master0slave0
sharding.jdbc.datasource.master0slave0.username=root
sharding.jdbc.datasource.master0slave0.password=
sharding.jdbc.datasource.master0slave1.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.master0slave1.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.master0slave1.url=jdbc:mysql://localhost:3306/master0slave1
sharding.jdbc.datasource.master0slave1.username=root
sharding.jdbc.datasource.master0slave1.password=
sharding.jdbc.datasource.master1.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.master1.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.master1.url=jdbc:mysql://localhost:3306/master1
sharding.jdbc.datasource.master1.username=root
sharding.jdbc.datasource.master1.password=
sharding.jdbc.datasource.master1slave0.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.master1slave0.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.master1slave0.url=jdbc:mysql://localhost:3306/master1slave0
sharding.jdbc.datasource.master1slave0.username=root
sharding.jdbc.datasource.master1slave0.password=
sharding.jdbc.datasource.master1slave1.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.master1slave1.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.master1slave1.url=jdbc:mysql://localhost:3306/master1slave1
sharding.jdbc.datasource.master1slave1.username=root
sharding.jdbc.datasource.master1slave1.password=
sharding.jdbc.config.sharding.tables.t_order.actual-data-nodes=ds$->{0..1}.t_order$->{0..1}
sharding.jdbc.config.sharding.tables.t_order.table-strategy.inline.sharding-column=order_id
sharding.jdbc.config.sharding.tables.t_order.table-strategy.inline.algorithm-expression=t_order$->{order_id % 2}
sharding.jdbc.config.sharding.tables.t_order.key-generator-column-name=order_id
sharding.jdbc.config.sharding.tables.t_order_item.actual-data-nodes=ds$->{0..1}.t_order_item$->{0..1}
sharding.jdbc.config.sharding.tables.t_order_item.table-strategy.inline.sharding-column=order_id
sharding.jdbc.config.sharding.tables.t_order_item.table-strategy.inline.algorithm-expression=t_order_item$->{order_id % 2}
sharding.jdbc.config.sharding.tables.t_order_item.key-generator-column-name=order_item_id
sharding.jdbc.config.sharding.binding-tables=t_order,t_order_item
sharding.jdbc.config.sharding.broadcast-tables=t_config
sharding.jdbc.config.sharding.default-database-strategy.inline.sharding-column=user_id
sharding.jdbc.config.sharding.default-database-strategy.inline.algorithm-expression=master$->{user_id % 2}
sharding.jdbc.config.sharding.master-slave-rules.ds0.master-data-source-name=master0
sharding.jdbc.config.sharding.master-slave-rules.ds0.slave-data-source-names=master0slave0, master0slave1
sharding.jdbc.config.sharding.master-slave-rules.ds1.master-data-source-name=master1
sharding.jdbc.config.sharding.master-slave-rules.ds1.slave-data-source-names=master1slave0, master1slave1
数据治理
sharding.jdbc.datasource.names=ds,ds0,ds1
sharding.jdbc.datasource.ds.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.ds.driver-class-name=org.h2.Driver
sharding.jdbc.datasource.ds.url=jdbc:mysql://localhost:3306/ds
sharding.jdbc.datasource.ds.username=root
sharding.jdbc.datasource.ds.password=
sharding.jdbc.datasource.ds0.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.ds0.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.ds0.url=jdbc:mysql://localhost:3306/ds0
sharding.jdbc.datasource.ds0.username=root
sharding.jdbc.datasource.ds0.password=
sharding.jdbc.datasource.ds1.type=org.apache.commons.dbcp.BasicDataSource
sharding.jdbc.datasource.ds1.driver-class-name=com.mysql.jdbc.Driver
sharding.jdbc.datasource.ds1.url=jdbc:mysql://localhost:3306/ds1
sharding.jdbc.datasource.ds1.username=root
sharding.jdbc.datasource.ds1.password=
sharding.jdbc.config.sharding.default-data-source-name=ds
sharding.jdbc.config.sharding.default-database-strategy.inline.sharding-column=user_id
sharding.jdbc.config.sharding.default-database-strategy.inline.algorithm-expression=ds$->{user_id % 2}
sharding.jdbc.config.sharding.tables.t_order.actual-data-nodes=ds$->{0..1}.t_order$->{0..1}
sharding.jdbc.config.sharding.tables.t_order.table-strategy.inline.sharding-column=order_id
sharding.jdbc.config.sharding.tables.t_order.table-strategy.inline.algorithm-expression=t_order$->{order_id % 2}
sharding.jdbc.config.sharding.tables.t_order.key-generator-column-name=order_id
sharding.jdbc.config.sharding.tables.t_order_item.actual-data-nodes=ds$->{0..1}.t_order_item$->{0..1}
sharding.jdbc.config.sharding.tables.t_order_item.table-strategy.inline.sharding-column=order_id
sharding.jdbc.config.sharding.tables.t_order_item.table-strategy.inline.algorithm-expression=t_order_item$->{order_id % 2}
sharding.jdbc.config.sharding.tables.t_order_item.key-generator-column-name=order_item_id
sharding.jdbc.config.sharding.binding-tables=t_order,t_order_item
sharding.jdbc.config.sharding.broadcast-tables=t_config
sharding.jdbc.config.sharding.default-database-strategy.inline.sharding-column=user_id
sharding.jdbc.config.sharding.default-database-strategy.inline.algorithm-expression=master$->{user_id % 2}
sharding.jdbc.config.orchestration.name=spring_boot_ds_sharding
sharding.jdbc.config.orchestration.overwrite=true
sharding.jdbc.config.orchestration.registry.namespace=orchestration-spring-boot-sharding-test
sharding.jdbc.config.orchestration.registry.server-lists=localhost:2181