* If you are comparing Uvicorn, compare it against Daphne, Hypercorn, uWSGI, etc. Application servers.
* **Starlette**:
    * Will have the next best performance, after Uvicorn. In fact, Starlette uses Uvicorn to run. So, it probably can only get "slower" than Uvicorn by having to execute more code.
    * But it provides you the tools to build simple web applications, with routing based on paths, etc.

There are several alternatives, including:

* <a href="https://www.uvicorn.org/" class="external-link" target="_blank">Uvicorn</a>: a high performance ASGI server.

# Debugging { #debugging }

You can connect the debugger in your editor, for example with Visual Studio Code or PyCharm.

## Call `uvicorn` { #call-uvicorn }

In your FastAPI application, import and run `uvicorn` directly:

{* ../../docs_src/debugging/tutorial001.py hl[1,15] *}

### About `__name__ == "__main__"` { #about-name-main }

The main purpose of the `__name__ == "__main__"` is to have some code that is executed when your file is called with:

```

</div>

Вам также понадобится сервер ASGI для производства, такой как <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a> или <a href="https://github.com/pgjones/hypercorn" class="external-link" target="_blank">Hypercorn</a>.

<div class="termy">

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

---> 100%
```

</div>

## Пример

### Создание

---> 100%
```

</div>

Tətbiqimizi əlçatan etmək üçün bizə <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a> və ya <a href="https://github.com/pgjones/hypercorn" class="external-link" target="_blank">Hypercorn</a> kimi ASGI server lazımdır.

<div class="termy">

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

---> 100%
```

</div>

## Nümunə

### Kodu yaradaq

Aquí hay algunas combinaciones y estrategias posibles:

* **Uvicorn** con `--workers`
    * Un administrador de procesos de Uvicorn **escucharía** en la **IP** y **puerto**, y iniciaría **múltiples worker processes de Uvicorn**.
* **Kubernetes** y otros sistemas de **contenedor distribuidos**

---> 100%
```

</div>

Вам також знадобиться сервер ASGI для продакшину, наприклад <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a> або <a href="https://github.com/pgjones/hypercorn" class="external-link" target="_blank">Hypercorn</a>.

<div class="termy">

```console
$ pip install uvicorn[standard]

---> 100%
```

</div>

## Приклад

### Створіть

* **Gunicorn**, welches **Uvicorn-Worker** managt
    * Gunicorn wäre der **Prozessmanager**, der die **IP** und den **Port** überwacht, die Replikation würde durch **mehrere Uvicorn-Workerprozesse** erfolgen
* **Uvicorn**, welches **Uvicorn-Worker** managt
    * Ein Uvicorn-**Prozessmanager** würde der **IP** am **Port** lauschen, und er würde **mehrere Uvicorn-Workerprozesse** starten.

```

</div>

////

//// tab | `uvicorn`

If you prefer to use the `uvicorn` command directly:

<div class="termy">

```console
$ uvicorn main:app --host 0.0.0.0 --port 8080 --workers 4
<font color="#A6E22E">INFO</font>:     Uvicorn running on <b>http://0.0.0.0:8080</b> (Press CTRL+C to quit)

* **Uvicorn** com `--workers`
    * Um **gerenciador de processos** Uvicorn escutaria no **IP** e na **porta** e iniciaria **vários processos de trabalho Uvicorn**.
* **Kubernetes** e outros **sistemas de contêineres** distribuídos
    * Algo na camada **Kubernetes** escutaria no **IP** e na **porta**. A replicação seria por ter **vários contêineres**, cada um com **um processo Uvicorn** em execução.