用spring boot 写一段redis 主从复制
时间: 2023-05-27 22:06:15 浏览: 138
以下是使用Spring Boot编写Redis主从复制的示例代码:
1. 引入Redis依赖
在pom.xml文件中添加以下依赖:
```xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
```
2. 配置Redis连接信息
在application.properties中添加以下配置信息:
```properties
# 主库
spring.redis.host=127.0.0.1
spring.redis.port=6379
# 从库
spring.redis.master.host=127.0.0.1
spring.redis.master.port=6380
```
3. 配置RedisTemplate
创建一个RedisTemplate配置类,用于配置RedisTemplate的序列化方式和连接工厂。以下是示例代码:
```java
@Configuration
public class RedisConfig {
@Bean
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
redisTemplate.setConnectionFactory(redisConnectionFactory);
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
redisTemplate.setHashKeySerializer(new StringRedisSerializer());
redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
return redisTemplate;
}
}
```
4. 编写Redis主从复制代码
创建一个Redis主从复制的Service类,使用Redisson框架实现。以下是示例代码:
```java
@Service
public class RedisReplicationService {
@Autowired
private RedissonClient redissonClient;
public void replicate() {
RKeys keys = redissonClient.getKeys();
Iterable<String> iterable = keys.getKeys();
for (String key : iterable) {
RMap<Object, Object> map = redissonClient.getMap(key);
map.readAllMap();
}
}
}
```
5. 测试Redis主从复制
编写一个测试类,测试Redis主从复制是否正常工作。以下是示例代码:
```java
@SpringBootTest
public class RedisReplicationServiceTest {
@Autowired
private RedisReplicationService redisReplicationService;
@Test
public void replicateTest() {
redisReplicationService.replicate();
}
}
```
以上就是使用Spring Boot编写Redis主从复制的示例代码。当主库的数据发生变化时,从库也会同步更新。
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