private void setRoomApplyNotifyCache(RoomReservation roomReservation, String userId) {
        // 記錄當前時間->房間預約起始時間，redis緩存，用于判斷是否管理員超期未處理，自動更改狀態(tài)，通知用戶房間預約超期未處理，防止占用時間段，用戶可以重新預約
        long cacheTimeSecond = DateUtil.between(new Date(), new Date(roomReservation.getStartTime()), DateUnit.SECOND);
        String roomOccupancyApplyKey = "record_reserve_key:" + roomReservation.getId();
        redisCacheUtil.setCacheObject(roomOccupancyApplyKey, userId, cacheTimeSecond, TimeUnit.SECONDS);
        // 前一個小時提醒負責人審核。 預約間隔最少是30分鐘
        long cacheNotifyChargerSecond = cacheTimeSecond - (60 * 60);
        // 當前時間距離預約起始時間小于一個小時
        if (cacheTimeSecond <= 3600L && cacheTimeSecond > 1800L) {
            // 不足一個小時，但是大于半個小時
            cacheNotifyChargerSecond = cacheTimeSecond - (30 * 60);
        } else if (cacheTimeSecond < 1800L) {
            // 不設置通知審核人
            return;
        }
        // 緩存
        String notifyChargerKey = RedisCacheKey.ROOM_APPLY_TIMEOUT_NOTIFY_KEY.concatKey(roomReservation.getId());
        redisCacheUtil.setCacheObject(notifyChargerKey, userId, cacheNotifyChargerSecond, TimeUnit.SECONDS);
    }

@Component
public class RedisExpiredKeyListenerComponent extends KeyExpirationEventMessageListener {
	// 通過構造函數(shù)注入 RedisMessageListenerContainer 給 KeyExpirationEventMessageListener
    public RedisExpiredKeyListenerComponent(RedisMessageListenerContainer listenerContainer) {
        super(listenerContainer);
    }

    @Override
    protected void doRegister(RedisMessageListenerContainer listenerContainer) {
        listenerContainer.addMessageListener(this, new PatternTopic("__keyevent@0__:expired"));
    }
    
    @Override
    public void onMessage(Message message, byte[] pattern) {
        String expiredKey = message.toString();
        if (expiredKey.startsWith("record_reserve_key:")) {
            String reserveId = expiredKey.substring("record_reserve_key:".length());
            // 根據(jù)id查詢房間預約信息，發(fā)送給審核人通知郵件。
            // ....
        }
    }
}

<dependency>
    <groupId>org.redisson</groupId>
    <artifactId>redisson-spring-boot-starter</artifactId>
    <version>3.16.2</version>
</dependency>

@Configuration
public class RedissonConfig {

    @Bean
    public RedissonClient redissonClient() {
        Config config = new Config();
        config.useSingleServer().setAddress("redis://localhost:6379");
        return Redisson.create(config);
    }
}

@Component
public class RedissonDelayQueue {

    private static final Logger log = LoggerFactory.getLogger(RedissonDelayQueue.class);

    @Autowired
    private RedissonClient redissonClient;
    // 延遲隊列
    private RDelayedQueue<String> delayQueue;
    // 阻塞隊列
    private RBlockingQueue<String> blockingQueue;

    private ExecutorService executorService;

    public RedissonDelayQueue() {
        this.executorService = new ThreadPoolExecutor(
                5,
                10,
                0L, TimeUnit.MILLISECONDS,
                new java.util.concurrent.LinkedBlockingQueue<>(),
                new CustomThreadFactory()
        );
    }

    @PostConstruct
    public void init() {
        blockingQueue = redissonClient.getBlockingQueue("myQueue");
        delayQueue = redissonClient.getDelayedQueue(blockingQueue);
        startConsumer();
    }

    private void startConsumer() {
        executorService.submit(() -> {
            while (!Thread.currentThread().isInterrupted()) {
                try {
                    // 從阻塞隊列中獲取任務
                    String task = blockingQueue.take();
                    log.info("Received task: {}", task);
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                    break;
                } catch (Exception e) {
                    log.error("Error processing task", e);
                }
            }
        });
    }

    public void addTask(String task, long delay) {
        log.info("Add task: {} with delay: {} seconds", task, delay);
        // 將任務添加到延遲隊列
        delayQueue.offer(task, delay, TimeUnit.SECONDS);
    }

    private static class CustomThreadFactory implements ThreadFactory {
        @Override
        public Thread newThread(Runnable r) {
            Thread thread = new Thread(r, "DelayQueue-Consumer");
            thread.setDaemon(true);
            return thread;
        }
    }
}

@RestController
public class TaskController {

    @Autowired
    private RedissonDelayQueue redissonDelayQueue;

    @PostMapping("/addTask")
    public void addTask(@RequestParam String task, @RequestParam long delay) {
        redissonDelayQueue.addTask(task, delay);
    }
}