Redis的Key过期机制

分手后的思念是犯贱 2023-06-24 14:23 110阅读 0赞

> 这个东西之前配置过，今天本来记录一下，加深印象，结果忙了一下午，问题出在redis的配置中，即将崩溃，这里提个醒，redis的配置文件中，对于每一行配置前面别有空格，正确做法一直顶到头，这个真是恶心的配置，一点都不智能，因为开启key过期要修改配置文件，所以在修改的时候别忘了这个坑。
> 
> 我使用的windows版本的redis为Redis-x64-3.2.100，使用的是.msi版本的，使用.zip有点问题，也有可能你的没有问题。
> 
> redis下载链接：[https://github.com/microsoftarchive/redis/releases/tag/win-3.2.100][https_github.com_microsoftarchive_redis_releases_tag_win-3.2.100]

# 1、依赖  #

<parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.1.8.RELEASE</version>
            <relativePath/> 
        </parent>
    
     <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-data-redis</artifactId>
           <version>2.1.8.RELEASE</version>
     </dependency>
    
     <dependency>
           <groupId>org.apache.commons</groupId>
           <artifactId>commons-pool2</artifactId>
           <version>2.6.2</version>
      </dependency>

# 2、文件配置 #

spring.redis.host=127.0.0.1
    spring.redis.password=123456
    spring.redis.jedis.pool.max-active=10
    spring.redis.jedis.pool.min-idle=5
    spring.redis.jedis.pool.max-idle=10
    spring.redis.jedis.pool.max-wait=2000
    spring.redis.timeout=1000
    spring.redis.lettuce.pool.MaxTotal=10
    spring.redis.lettuce.pool.minIdle=1
    spring.redis.lettuce.pool.maxWaitMillis=50000
    spring.redis.lettuce.pool.maxIdle=5
    spring.redis.lettuce.pool.testOnBorrow=true
    spring.redis.lettuce.pool.testOnReturn=true
    spring.redis.lettuce.pool.testWhileIdle=true

# 3、代码配置 #

@Configuration
    public class RedisConfig {
    
    
        @Bean
        @ConfigurationProperties(prefix = "spring.redis.lettuce.pool")
        public GenericObjectPoolConfig redisPool() {
            return new GenericObjectPoolConfig();
        }
    
        @Bean
        @ConfigurationProperties(prefix = "spring.redis")
        public RedisStandaloneConfiguration redisConfig() {
            return new RedisStandaloneConfiguration();
        }
    
        @Bean
        @Primary
        public LettuceConnectionFactory connectionFactory(GenericObjectPoolConfig redisPool, RedisStandaloneConfiguration redisConfig) {
            LettuceClientConfiguration clientConfiguration = LettucePoolingClientConfiguration.builder().poolConfig(redisPool).commandTimeout(Duration.ofMillis(redisPool.getMaxWaitMillis())).build();
            return new LettuceConnectionFactory(redisConfig, clientConfiguration);
        }
    
        @Bean
        public RedisMessageListenerContainer redisMessageListenerContainer(LettuceConnectionFactory connectionFactory, MessageListenerAdapter redisMsgListener) {
            RedisMessageListenerContainer listenerContainer = new RedisMessageListenerContainer();
            listenerContainer.setConnectionFactory(connectionFactory);
            listenerContainer.addMessageListener(redisMsgListener, new PatternTopic("__keyevent@0__:*"));
            return listenerContainer;
        }
    
        @Bean
        public StringRedisTemplate stringRedisTemplate(LettuceConnectionFactory connectionFactory) {
            StringRedisTemplate stringRedisTemplate = new StringRedisTemplate();
            stringRedisTemplate.setConnectionFactory(connectionFactory);
            return stringRedisTemplate;
    
        }
    }

# 4、配置监听器，后续业务处理 #

@Component
    public class RedisMsgListener extends MessageListenerAdapter {
    
        @Override
        public void onMessage(Message message, byte[] pattern) {
            String topic = new String(pattern);
            RedisSerializer<String> string = RedisSerializer.string();
            String deserialize = string.deserialize(message.getBody());
            System.out.println("topic名称：" + message.getChannel());
            System.out.println("Msg：" + deserialize);
        }
    }

# 5、修改redis配置，重启 #

redis.windows-service.conf
    
    notify-keyspace-events Ex

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2w4NDgxNjg_size_16_color_FFFFFF_t_70][]

# 6、测试  #

@Autowired
        private StringRedisTemplate stringRedisTemplate;
    
       @GetMapping("/push")
        public void push(String lee) {
            stringRedisTemplate.opsForValue().set(lee, String.valueOf(System.nanoTime()), 3L, TimeUnit.SECONDS);
        }

> 3秒之后，打印如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2w4NDgxNjg_size_16_color_FFFFFF_t_70 1][]

> 如果能帮到你，麻烦点个赞哦！

[https_github.com_microsoftarchive_redis_releases_tag_win-3.2.100]: https://github.com/microsoftarchive/redis/releases/tag/win-3.2.100
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2w4NDgxNjg_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191223172635835.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2w4NDgxNjg=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2w4NDgxNjg_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191223174005689.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2w4NDgxNjg=,size_16,color_FFFFFF,t_70