redis key失效监听事件

redis key失效监听事件
创建一个监听配置类RedisListenerConfig


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;

@Configuration
public class RedisListenerConfig {
    @Bean
    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        return container;
    }
}

创建一个监听类RedisKeyExpiredListener


import cn.hutool.core.util.StrUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.listener.KeyExpirationEventMessageListener;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.stereotype.Component;

@Component
public class RedisKeyExpiredListener extends KeyExpirationEventMessageListener  {
    @Autowired
    public RedisTemplate<String, String> redisTemplate;

    public RedisKeyExpiredListener(RedisMessageListenerContainer listenerContainer) {
        super(listenerContainer);
    }

    /**
     * redis 失效监听
     * 监听key包含的
     *
     * @param message
     * @param bytes
     */
    @Override
    public void onMessage(Message message, byte[] bytes) {
        RedisSerializer<?> serializer = redisTemplate.getValueSerializer();
        String channel = String.valueOf(serializer.deserialize(message.getChannel()));
        String format = StrUtil.format("__keyevent@{}__:expired", "1");
        //获取失效key名称
        String expireKey = String.valueOf(serializer.deserialize(message.getBody()));
        System.out.println("获取失效key名称" + expireKey);
        if (expireKey.contains("key名称")) {
            //在这里处理相关的业务
        }
    }
}

创建一个测试代码

    @GetMapping(value = "/expiredTest")
    public void redisTest() {
        redisTemplate.opsForValue().set("test", "值", 5, TimeUnit.SECONDS);
    }