Redis数据失效监听

一、配置Redis开启

打开conf/redis.conf 文件，添加参数：notify-keyspace-events Ex

二、验证配置

• 步骤一：进入redis客户端：redis-cli
• 步骤二：执行 CONFIG GET notify-keyspace-events ，如果有返回值证明配置成功，如果没有执行步骤三
• 步骤三：执行CONFIG SET notify-keyspace-events "Ex"，再查看步骤二是否有值

三、两个类

package com.ciih.autopaddleGetway.config.redis;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.RedisMessageListenerContainer;import javax.annotation.Resource;@Configuration
public class RedisConfig {@Resourceprivate RedisConnectionFactory redisConnectionFactory;@Resourceprivate RedisKeyExpirationListener redisExpiredListener;@Beanpublic RedisMessageListenerContainer redisMessageListenerContainer() {RedisMessageListenerContainer redisMessageListenerContainer = new RedisMessageListenerContainer();redisMessageListenerContainer.setConnectionFactory(redisConnectionFactory);//监听所有key的过期事件redisMessageListenerContainer.addMessageListener(redisExpiredListener, redisExpiredListener.getTopic());return redisMessageListenerContainer;}}

 

package com.ciih.autopaddleGetway.config.redis;import lombok.Data;
import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.connection.MessageListener;
import org.springframework.data.redis.listener.PatternTopic;
import org.springframework.stereotype.Component;@Data
@Component
public class RedisKeyExpirationListener implements MessageListener {//监听的主题(只监听redis数据库1，如果要监听redis所有的库，把1替换为*)public final PatternTopic topic = new PatternTopic("__keyevent@1__:expired");/*** Redis失效事件 key** @param message* @param pattern*/@Overridepublic void onMessage(Message message, byte[] pattern) {String expiraKey = message.toString();System.out.println(expiraKey + "触发了失效事件！！！！");System.out.println();}
}