如何让spring web流量在服务器端等待到满足指定条件后返回响应

@RestController
public class MyController {

    @RequestMapping(value = "/api/data", method = RequestMethod.GET, produces = "application/json")
    public DeferredResult<ResponseEntity<?>> getData() {
        DeferredResult<ResponseEntity<?>> deferredResult = new DeferredResult<>(5000L); // 设置超时时间为5秒

        // 模拟满足指定条件后返回响应
        if (conditionIsMet()) {
            deferredResult.setResult(ResponseEntity.ok("Data is ready!"));
        }

        // 超时后的处理逻辑
        deferredResult.onTimeout(() -> {
            deferredResult.setErrorResult(ResponseEntity.status(HttpStatus.REQUEST_TIMEOUT).body("Request timeout"));
        });

        return deferredResult;
    }

    private boolean conditionIsMet() {
        // 判断是否满足指定条件
        // 返回true表示满足条件，可以返回响应
        // 返回false表示不满足条件，继续等待
    }
}