} catch (uhe: UnknownHostException) {
      throw TestAbortedException(uhe.message, uhe)
    }
  }

  fun OkHttpClient.close() {
    dispatcher.executorService.shutdown()
    connectionPool.evictAll()
  }

func TestHealing(t *testing.T) {
	ctx, cancel := context.WithCancel(t.Context())
	defer cancel()

	obj, fsDirs, err := prepareErasure16(ctx)
	if err != nil {
		t.Fatal(err)
	}
	defer obj.Shutdown(t.Context())

	// initialize the server and obtain the credentials and root.
	// credentials are necessary to sign the HTTP request.
	if err = newTestConfig(globalMinioDefaultRegion, obj); err != nil {

        }
    }

    /**
     * Destroys the DI container and stops the timeout manager.
     * This method ensures proper cleanup of resources when the crawler shuts down.
     * It's called both during normal shutdown and in error conditions.
     */
    private static void destroyContainer() {
        if (running.getAndSet(false)) {
            TimeoutManager.getInstance().stop();
            if (logger.isDebugEnabled()) {

- Reverts graceful node shutdown to match 1.21 behavior of setting pods that have not yet successfully completed to "Failed" phase if the GracefulNodeShutdown feature is enabled in kubelet. The GracefulNodeShutdown feature is beta and must be explicitly configured via kubelet config to be enabled in 1.21+. This changes 1.22 and 1.23 behavior on node shutdown to match 1.21. If you do not want pods to be marked terminated on node shutdown in...

                """
            ),
        ] = None,
        on_shutdown: Annotated[
            Optional[Sequence[Callable[[], Any]]],
            Doc(
                """
                A list of shutdown event handler functions.

                You should instead use the `lifespan` handlers.

                Read more in the
                [FastAPI docs for `lifespan`](https://fastapi.tiangolo.com/advanced/events/).

It is very simple and intuitive. It's designed to be easily extensible, and have modular components.

It has:

* Seriously impressive performance.
* WebSocket support.
* In-process background tasks.
* Startup and shutdown events.
* Test client built on HTTPX.
* CORS, GZip, Static Files, Streaming responses.
* Session and Cookie support.
* 100% test coverage.
* 100% type annotated codebase.
* Few hard dependencies.

}

func (z *erasureServerPools) Shutdown(ctx context.Context) error {
	g := errgroup.WithNErrs(len(z.serverPools))

	for index := range z.serverPools {
		g.Go(func() error {
			return z.serverPools[index].Shutdown(ctx)
		}, index)
	}

	for _, err := range g.Wait() {
		if err != nil {
			storageLogIf(ctx, err)
		}
		// let's the rest shutdown
	}
	return nil
}

Es bietet:

* Eine sehr beeindruckende Leistung.
* WebSocket-Unterstützung.
* Hintergrundtasks im selben Prozess.
* Startup- und Shutdown-Events.
* Testclient basierend auf HTTPX.
* CORS, GZip, statische Dateien, Responses streamen.
* Session- und Cookie-Unterstützung.
* 100 % Testabdeckung.
* 100 % Typannotierte Codebasis.

      else break;
    }
  }

  /** Waits out termination of a thread pool or fails doing so. */
  void joinPool(ExecutorService exec) throws InterruptedException {
    try {
      exec.shutdown();
      assertTrue(
          "ExecutorService did not terminate in a timely manner",
          exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
    } catch (SecurityException ok) {

```

⛔️ **Shell** form:

```Dockerfile
# ⛔️ Don't do this
CMD fastapi run app/main.py --port 80
```

Make sure to always use the **exec** form to ensure that FastAPI can shutdown gracefully and [lifespan events](../advanced/events.md){.internal-link target=_blank} are triggered.