springboot2.x.x 配置redis监听key消失

约定不等于承诺〃 2021-09-25 12:54 336阅读 0赞

1，RedisConfigContainer类读取redis配置信息 初始化StringRedisTemplate

package com.game.redis.conf;
    
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.cache.annotation.EnableCaching;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.data.redis.connection.RedisConnectionFactory;
    import org.springframework.data.redis.core.StringRedisTemplate;
    import org.springframework.data.redis.listener.RedisMessageListenerContainer;
    /**
     * 配置默认Redis操作实例 到Spring中
     *
     */
    //@Component
    //@PropertySource("classpath:application-test.yml")
    //
    @Configuration
    @EnableCaching
    public class RedisConfigContainer extends RedisConfig {
    
    	@Value("${spring.redis.redis-container.database}")
    	private int dbIndex;
    
    	@Value("${spring.redis.redis-container.host}")
    	private String host;
    
    	@Value("${spring.redis.redis-container.port}")
    	private int port;
    
    	@Value("${spring.redis.redis-container.password}")
    	private String password;
    
    	@Value("${spring.redis.redis-container.timeout}")
    	private int timeout;
    
    	/**
    	 * 配置redis连接工厂
    	 *
    	 * @return
    	 */
    	public RedisConnectionFactory defaultRedisConnectionFactory() {
    		return createJedisConnectionFactory(dbIndex, host, port, password, timeout);
    	}
    
    	/**
    	 * 配置redisTemplate 注入方式使用@Resource(name="") 方式注入
    	 *
    	 * @return
    	 */
    	@Bean(name = "redisTemplateContainer")
    	public StringRedisTemplate defaultRedisTemplate() {
    		StringRedisTemplate template = new StringRedisTemplate();
    		template.setConnectionFactory(defaultRedisConnectionFactory());
    
    		template.afterPropertiesSet();
           
    		return template;
    	}
    	
    	@Bean
    	public RedisMessageListenerContainer container() {
    		RedisMessageListenerContainer container = new RedisMessageListenerContainer();
    		container.setConnectionFactory(defaultRedisConnectionFactory());
    		return container;
    	}
      
    }

2 RedisKeyExpirationListener设置监听

package com.game.redis.container;
    
    import org.apache.log4j.Logger;
    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;
    
    import com.game.service.OutSevice;
    
    @Component
    public class RedisKeyExpirationListener extends KeyExpirationEventMessageListener {
    	protected final Logger logger = Logger.getLogger(this.getClass());
    	public RedisKeyExpirationListener(RedisMessageListenerContainer listenerContainer) {
    		super(listenerContainer);
    	}
    
    	/**
    	 * 针对redis数据失效事件，进行数据处理
    	 * 
    	 * @param message
    	 * @param pattern
    	 */
    	@Override
    	public void onMessage(Message message, byte[] pattern) {
    		// 用户做自己的业务处理即可,注意message.toString()可以获取失效的key
    		String expiredKey = message.toString();
    		logger.info(expiredKey + "消失");
    		OutSevice.examine(expiredKey);
    	}
    }

3yml配置

redis:
      pool:
       max-active: -1
       max-wait: -1
       max-idle: 8
       min-idle: 0
      redis-container:
       database: 3
       host:ip
       port: 6379
       password: pwd
       timeout: 0

注意 要选择redis db数据少的数据库进行设置监听 ，延迟低