### `StreamingResponse` { #streamingresponse }

Bir async generator veya normal generator/iterator (içinde `yield` olan bir fonksiyon) alır ve response body’yi stream eder.

{* ../../docs_src/custom_response/tutorial007_py310.py hl[3,16] *}

/// note | Teknik Detaylar

### [Sanic](https://sanic.readthedocs.io/en/latest/) { #sanic }

It was one of the first extremely fast Python frameworks based on `asyncio`. It was made to be very similar to Flask.

/// note | Technical Details

It used [`uvloop`](https://github.com/MagicStack/uvloop) instead of the default Python `asyncio` loop. That's what made it so fast.

It clearly inspired Uvicorn and Starlette, that are currently faster than Sanic in open benchmarks.

* mount (noun): точка монтирования / mount (keep in English if it's a FastAPI keyword)
* plugin: плагин
* plug-in: плагин
* full stack: full stack (do not translate)
* full-stack: full-stack (do not translate)
* loop (as in async loop): цикл событий
* Machine Learning: Машинное обучение
* Deep Learning: Глубокое обучение
* callback hell: callback hell (clarify as `ад обратных вызовов`)
* on the fly: на лету

// executed in sequence. Assigning nodes to different executors allows executing
// nodes in parallel.
// in_flight_nodes_limit: when is_async is true, this value controls the
// maximum number of in flight async nodes. Enqueuing of additional async ops
// after the limit is reached blocks until some inflight nodes finishes.
// The effect is bounding the memory held by inflight TensorHandles that are
// referenced by the inflight nodes.

          "to:${System.currentTimeMillis() + TimeUnit.MILLISECONDS.convert(5, TimeUnit.MINUTES)}))"
      }
    }

    // Jenkins-specific build scan metadata
    if (jenkinsUrl) {
      // Disable async upload in CI to ensure scan upload completes before CI agent is terminated
      uploadInBackground = false

      // Parse job name in the case of matrix builds

```

</div>

Benzer bir süreç, diğer ASGI server programlarının tamamı için de geçerlidir.

/// tip | İpucu

`standard` eklediğinizde Uvicorn, önerilen bazı ek bağımlılıkları kurar ve kullanır.

Bunlara, `asyncio` için yüksek performanslı bir drop-in replacement olan ve concurrency performansını ciddi şekilde artıran `uvloop` da dahildir.

    )

  override fun connectTcp(): ConnectResult {
    check(rawSocket == null) { "TCP already connected" }

    var success = false

    // Tell the call about the connecting call so async cancels work.
    call.plansToCancel += this
    try {
      call.eventListener.connectStart(call, route.socketAddress, route.proxy)
      connectionPool.connectionListener.connectStart(route, call)

```console
$ pip install "uvicorn[standard]"

---> 100%
```

</div>

类似的流程也适用于任何其他 ASGI 服务器程序。

/// tip | 提示

通过添加 `standard` 选项，Uvicorn 将安装并使用一些推荐的额外依赖项。

其中包括 `uvloop`，这是 `asyncio` 的高性能替代方案，能够显著提升并发性能。

当您使用 `pip install "fastapi[standard]"` 安装 FastAPI 时，实际上也会安装 `uvicorn[standard]`。

///

## 运行服务器程序 { #run-the-server-program }

El código posterior al `yield` statement se ejecuta después del response:

{* ../../docs_src/dependencies/tutorial007_py310.py hl[5:6] *}

/// tip | Consejo

Puedes usar funciones `async` o regulares.

**FastAPI** hará lo correcto con cada una, igual que con dependencias normales.

///

## Una dependencia con `yield` y `try` { #a-dependency-with-yield-and-try }

/// tip | Tipp

Durch das Hinzufügen von `standard` installiert und verwendet Uvicorn einige empfohlene zusätzliche Abhängigkeiten.

Dazu gehört `uvloop`, der hochperformante Drop-in-Ersatz für `asyncio`, der den großen Nebenläufigkeits-Leistungsschub bietet.

Wenn Sie FastAPI mit etwas wie `pip install "fastapi[standard]"` installieren, erhalten Sie auch `uvicorn[standard]`.

///