Spring MVC - DeferredResult Examples

@Controller
public class MyController {
    Logger logger = Logger.getLogger(MyController.class.getSimpleName());

    @RequestMapping("test")
    public
    @ResponseBody
    DeferredResult<String> handleTestRequest () {

        logger.info("handler started");
        final DeferredResult<String> deferredResult = new DeferredResult<>();

        new Thread(() -> {
            logger.info("async task started");
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            logger.info("async task finished");
            deferredResult.setResult("test async result");
        }).start();


        logger.info("handler finished");
        return deferredResult;
    }
}