Question

我正在尝试为我的项目应用 Redisson 功能作为消息代理，我有一个问题。是否可以将 Redisson 异步推送到先前收到的消息？我创建了一个小例子，从不同的 URL 发送了 4 条消息。我预计，Redisson 会异步处理它们，但它一一做到了。这里的实现：

singularity build --fakeroot <OUTPUT_CONTAINER.sif> Singularity

和配置：

public class RedisListenerServiceImpl implements MessageListener<String> {

    private static final Logger log = LoggerFactory.getLogger(RedisListenerServiceImpl.class);
    private final ObjectMapper objectMapper = new ObjectMapper();

    @Override
    public void onMessage(CharSequence channel, String stringMsg) {

        log.info("Message received: {}", stringMsg);
        MessageDto msg;
        try {
            msg = objectMapper.readValue(stringMsg, MessageDto.class);
        } catch (final IOException e) {
            log.error("Unable to deserialize message: {}", e.getMessage(), e);
            return;
        }

        try {
            //Do my stuff
        } catch (Exception e) {
            log.error("Unable to get service from factory: {}", e.getMessage(), e);
        }

    }
}

Answer 1

这是预期的行为。如果您希望在 Listener onMessage() 方法被触发时同时处理您的消息，只需使用线程池来处理它。

由于 Redisson 不知道您要使用多少个线程触发的事件，因此将实现细节留给您。

public class RedisListenerServiceImpl implements MessageListener<String> {

private static final Logger log = LoggerFactory.getLogger(RedisListenerServiceImpl.class);
private final ObjectMapper objectMapper = new ObjectMapper();
private final ExecutorService executorService = Executors.newFixedThreadPool(10);

@Override
public void onMessage(CharSequence channel, String stringMsg) {

    log.info("Message received: {}", stringMsg);
    MessageDto msg;
    try {
        msg = objectMapper.readValue(stringMsg, MessageDto.class);
        executorService.submit(()->{
        System.out.println("do something with message: "+msg);
    });
    } catch (final IOException e) {
        log.error("Unable to deserialize message: {}", e.getMessage(), e);
        return;
    }

    try {
        //Do my stuff
    } catch (Exception e) {
        log.error("Unable to get service from factory: {}", e.getMessage(), e);
    }

}

Redisson 异步处理消息

1 个答案: