`FastAPI` aslında `Starlette`'nin bir sub-class'ı. Eğer Starlette'nin nasıl kullanılacağını biliyor isen, çoğu işlevini aynı şekilde yapıyor.

**FastAPI** ile beraber **Starlette**'nin bütün özelliklerine de sahip olacaksınız (FastAPI aslında Starlette'nin steroid basmış hali):

    }

    @Test
    @DisplayName("getInput/getOutput return cached streams when open; throw when closed")
    void getInputOutput_caching_and_closed() throws Exception {
        // Arrange: minimal stubs so stream construction works
        SmbPipeHandleImpl handle = newHandleWithBasicStubs(0, "\\\\pipe\\\\foo");
        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree);

    //                                                                               Hook
    //                                                                              ======
    // to suppress unexpected override by sub-class
    // you should remove the 'final' if you need to override this
    /**
     * Hook method called before action execution.
     * This method refreshes the user information if a user is logged in

	return false
}

// returns true if object was modified after givenTime.
func ifModifiedSince(objTime time.Time, givenTime time.Time) bool {
	// The Date-Modified header truncates sub-second precision, so
	// use mtime < t+1s instead of mtime <= t to check for unmodified.
	return !objTime.Before(givenTime.Add(1 * time.Second))
}

	// to the nearest second and ignores the AccessTime and ChangeTime fields.
	//
	// To use AccessTime or ChangeTime, specify the Format as PAX or GNU.
	// To use sub-second resolution, specify the Format as PAX.
	ModTime    time.Time // Modification time
	AccessTime time.Time // Access time (requires either PAX or GNU support)

有关事件处理器的详情，请参阅 <a href="https://www.starlette.dev/lifespan/" class="external-link" target="_blank">Starlette 官档 - 事件</a>。

包括如何处理生命周期状态，这可以用于程序的其他部分。

///

## 子应用

`FastAPI` é na verdade uma sub-classe do `Starlette`. Então, se você já conhece ou usa Starlette, a maioria das funcionalidades se comportará da mesma forma.

	}
	peerResults := make(map[string]madmin.ServerPeerUpdateStatus, len(globalNotificationSys.allPeerClients))
	failedClients := make(map[int]bool, len(globalNotificationSys.allPeerClients))

	if lrTime.Sub(currentReleaseTime) <= 0 {
		updateStatus.Results = append(updateStatus.Results, madmin.ServerPeerUpdateStatus{
			Host:           local,
			Err:            fmt.Sprintf("server is running the latest version: %s", Version),

이 문서에는 코드의 다른 영역에서 사용할 수 있는 lifespan 상태를 처리하는 방법도 포함되어 있습니다.

///

## 서브 애플리케이션

<div class="termy">

```console
$ pip install "fastapi[all]"
---> 100%
```

</div>

### Create the `Settings` object { #create-the-settings-object }

Import `BaseSettings` from Pydantic and create a sub-class, very much like with a Pydantic model.

The same way as with Pydantic models, you declare class attributes with type annotations, and possibly default values.