Spring Redis主题订阅缓存

Question

我使用spring-redis publish-subscribe。它在开始运行我的代码时立即收到消息。但是大约几分钟后没有收到消息，它不会立即响应（不知道什么时候可以再次接收，几乎无法接收）！所以我想知道-是否有缓存设置或其他内容？

@Configuration
public class PubSubConfiguration {

    @Bean
    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory,
        MessageListenerAdapter listenerAdapter) {

        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        container.addMessageListener(listenerAdapter, new PatternTopic("topic"));
        return container;
    }

    /**
     * @param receiver
     * @return
     */
    @Bean
    MessageListenerAdapter listenerAdapter(Sub1 receiver) {
        return new MessageListenerAdapter(receiver);
    }
}


@Component
public class Pub1 {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    public void testCheckpoint() {
        stringRedisTemplate.convertAndSend("topic", "2018-07-09");
        System.out.println("sent...");
    }
}


@Component
public class Sub1 implements MessageListener {

    @Override
    public void onMessage(final Message message, final byte[] pattern) {
        String msg = new String(message.getBody());
        String topic = new String(message.getChannel());
        System.out.println(String.format("time: %s, msg: %s, topic: %s", LocalTime.now(), msg, topic));
    }
}