t.Parallel()
		p := NewPushQueue()
		defer p.ShutDown()
		p.Enqueue(proxies[0], &model.PushRequest{})
		p.Enqueue(proxies[1], &model.PushRequest{})

		ExpectDequeue(t, p, proxies[0])
		ExpectDequeue(t, p, proxies[1])
	})

	t.Run("remove too many", func(t *testing.T) {
		t.Parallel()
		p := NewPushQueue()
		defer p.ShutDown()

		p.Enqueue(proxies[0], &model.PushRequest{})

    task: Task,
    delayNanos: Long = 0L,
  ) {
    taskRunner.lock.withLock {
      if (shutdown) {
        if (task.cancelable) {
          taskRunner.logger.taskLog(task, this) { "schedule canceled (queue is shutdown)" }
          return
        }
        taskRunner.logger.taskLog(task, this) { "schedule failed (queue is shutdown)" }
        throw RejectedExecutionException()
      }

	e.eventRecorder.Eventf(object, eventtype, reason, messageFmt, args...)
}

// Shutdown terminates the event recorder. This must be called upon completion of writing events, and events should not be
// written once terminated.
func (e *EventRecorder) Shutdown() {
	e.eventBroadcaster.Shutdown()

   * message buffer (16 MiB) will be rejected and trigger a [graceful shutdown][close] of this web
   * socket. This method returns false in that case, and in any other case where this web socket is
   * closing, closed, or canceled.
   *
   * This method returns immediately.
   */
  fun send(bytes: ByteString): Boolean

  /**
   * Attempts to initiate a graceful shutdown of this web socket. Any already-enqueued messages will

# Routes
# Home page
GET     /                           controllers.Application.index

GET     /shutdown                   controllers.Application.shutdown

# Map static resources from the /public folder to the /assets URL path

하나 이상의 이벤트 핸들러 함수를 추가할 수도 있습니다.

그리고 응용 프로그램은 모든 `startup` 이벤트 핸들러가 완료될 때까지 요청을 받지 않습니다.

## `shutdown` 이벤트

응용 프로그램이 종료될 때 실행하려는 함수를 추가하려면 `"shutdown"` 이벤트로 선언합니다:

```Python hl_lines="6"
{!../../../docs_src/events/tutorial002.py!}
```

이 예제에서 `shutdown` 이벤트 핸들러 함수는 `"Application shutdown"`이라는 텍스트가 적힌 `log.txt` 파일을 추가할 것입니다.

!!! info "정보"

本例中，`startup` 事件处理器函数为项目数据库（只是**字典**）提供了一些初始值。

**FastAPI** 支持多个事件处理器函数。

只有所有 `startup` 事件处理器运行完毕，**FastAPI** 应用才开始接收请求。

## `shutdown` 事件

使用 `shutdown` 事件声明 `app` 关闭时运行的函数：

```Python hl_lines="6"
{!../../../docs_src/events/tutorial002.py!}
```

此处，`shutdown` 事件处理器函数在 `log.txt` 中写入一行文本 `Application shutdown`。

!!! info "说明"

    `open()` 函数中，`mode="a"` 指的是**追加**。因此这行文本会添加在文件已有内容之后，不会覆盖之前的内容。

!!! tip "提示"

	natsserver "github.com/nats-io/nats-server/v2/test"
)

func TestNatsConnPlain(t *testing.T) {
	opts := natsserver.DefaultTestOptions
	opts.Port = 14222
	s := natsserver.RunServer(&opts)
	defer s.Shutdown()

	clientConfig := &NATSArgs{
		Enable: true,
		Address: xnet.Host{
			Name:      "localhost",
			Port:      (xnet.Port(opts.Port)),
			IsPortSet: true,
		},
		Subject: "test",
	}

	log.Println("GCE metadata server started")
	<-done
	if err := s1.Shutdown(context.Background()); err != nil {
		log.Fatalf("GCE Metadata Shutdown Failed: %+v", err)
	}
	if err := s2.Shutdown(context.Background()); err != nil {
		log.Fatalf("GCE Metadata Shutdown Failed: %+v", err)
	}
}

func runServer(addr string, attrs map[string]string) *http.Server {
	r := mux.NewRouter()

                  // which case we should skip right down to shutdown.
                  if (isRunning()) {
                    try {
                      AbstractExecutionThreadService.this.run();
                    } catch (Throwable t) {
                      restoreInterruptIfIsInterruptedException(t);
                      try {
                        shutDown();
                      } catch (Exception ignored) {