https://github.com/guoguang/shardingsphere-example
一个最小可执行的shardingsphere-example案例
https://github.com/guoguang/shardingsphere-example
Last synced: 7 months ago
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一个最小可执行的shardingsphere-example案例
- Host: GitHub
- URL: https://github.com/guoguang/shardingsphere-example
- Owner: GuoGuang
- License: apache-2.0
- Created: 2021-06-25T05:43:31.000Z (over 4 years ago)
- Default Branch: main
- Last Pushed: 2023-09-03T14:08:59.000Z (about 2 years ago)
- Last Synced: 2025-01-17T21:44:22.922Z (9 months ago)
- Language: Java
- Size: 27.3 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# shardingsphere-example
一个最小可执行的shardingsphere-example案例
# Getting Started
### 0、准备数据
ShardingSphere是中间件，做的事情就是给每个sql进行路由，简化我们分库分表之后的操作，分库分表是 `动作`, ShardingSphere不参与这个，所以我们的数据库架构需要预处理，先分别准备两个库：db0、db1；然后每个库分别包含两个表：user_0，user_1；
```sql
CREATE TABLE `user_0` (
`id` bigint(20) NOT NULL COMMENT '主键ID',
`name` varchar(30) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '姓名',
`age` int(11) NULL DEFAULT NULL COMMENT '年龄',
`email` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '邮箱',
`date` datetime NULL DEFAULT NULL,
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci ROW_FORMAT = Dynamic;
CREATE TABLE `user_1` (
`id` bigint(20) NOT NULL COMMENT '主键ID',
`name` varchar(30) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '姓名',
`age` int(11) NULL DEFAULT NULL COMMENT '年龄',
`email` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '邮箱',
`date` datetime NULL DEFAULT NULL,
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci ROW_FORMAT = Dynamic;
INSERT INTO user_0 (id, name, age, email) VALUES
(1, 'Jone', 18, 'test1@baomidou.com'),
(2, 'Jack', 20, 'test2@baomidou.com'),
(3, 'Tom', 28, 'test3@baomidou.com'),
(4, 'Sandy', 21, 'test4@baomidou.com'),
(5, 'Billie', 24, 'test5@baomidou.com');
```
### 1、添加依赖
```java
org.apache.shardingsphere
sharding-jdbc-spring-boot-starter
4.1.1
```
### 2、配置表路由规则
```yaml
spring:
main:
allow-bean-definition-overriding: true
shardingsphere:
datasource:
names: db0,db1
db0:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/db0?serverTimezone=GMT%2B8&characterEncoding=UTF-8
username: root
password: 123456
db1:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/db1?serverTimezone=GMT%2B8&characterEncoding=UTF-8
username: root
password: 123456
sharding:
# 默认分库策略
default-database-strategy:
inline:
sharding-column: id
algorithm-expression: db$->{id % 2}
tables:
# 表名
user:
# 真实表,数据库、表的分库分表情况说明
actual-data-nodes: db${0..1}.user_${0..1}
# 默认分库策略
database-strategy:
inline:
sharding-column: id
algorithm-expression: db$->{id % 2}
# 分表策略
table-strategy:
inline:
sharding-column: id
algorithm-expression: user_$->{id % 2}
props:
sql:
show: true
```
### 3. 测试
```java
@Test
public insert_test()throwsException {
for(longi = 0; i < 10; i++) {
User user = newUser();
user.setId(i);
user.setName("1");
user.setAge(i);
user.setDate(new Date());
userService.insertMaster(user);
}
}
```