springboot redis监控失效key

1.引入依赖

            org.springframework.boot
            spring-boot-starter-data-redis
        

2.创建超时监听

package com.jeesite.modules.test.RedisManage;

import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.listener.KeyExpirationEventMessageListener;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.stereotype.Component;

/**
 * redis失效key监听
 *
 * @author 郑文
 *
 */
@Component
public class RedisKeyExpirationListener extends KeyExpirationEventMessageListener {
    public RedisKeyExpirationListener(RedisMessageListenerContainer listenerContainer) {
        super(listenerContainer);
    }

    /**
     * redis失效key事件处理
     * @param message
     * @param pattern
     */
    @Override
    public void onMessage(Message message, byte[] pattern) {
        // message.toString()可以获取失效的key
        String expiredKey = message.toString();
        System.out.println("-------------------");
        System.out.println("失效key："+message.getBody());
    }
}

View Code

3.超时监听配置

package com.jeesite.modules.test.RedisManage;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.listener.PatternTopic;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;


@Configuration
public class RedisListenerConfig {
    @Bean
    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {

        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        //下面这种方式是灵活配置，针对每个库的失效key做处理
        //container.addMessageListener(new RedisExpiredListener(), new PatternTopic("__keyevent@0__:expired"));
        return container;
    }
}

View Code

4. controller里接口调用

   @Autowired
    public RedisTemplate redisTemplate;
    @GetMapping("/set")
    public String set() {
        redisTemplate.opsForValue().set("name", "tom"+System.currentTimeMillis(), 10, TimeUnit.SECONDS);
        return  redisTemplate.opsForValue().get("name").toString();
    }

View Code

5.10秒后控制台打印超时key