As always, in FastAPI you can combine `def` and `async def` as needed.

    If you need a refresher about when to use which, check out the section _"In a hurry?"_ in the docs about [`async` and `await`](../async.md#in-a-hurry){.internal-link target=_blank}.

9. This *path operation function* is not returning dataclasses (although it could), but a list of dictionaries with internal data.

CHANGELOG/README.md...

## Versões disponíveis

Você pode ver as versões disponíveis (por exemplo, para verificar qual é a versão atual) em [Release Notes](../release-notes.md){.internal-link target=\_blank}.

## Sobre versões

Seguindo as convenções de controle de versão semântica, qualquer versão abaixo de `1.0.0` pode adicionar mudanças significativas.

### Certificate Directory

# Contribution guidelines

So you want to hack on Istio? Yay! Please refer to Istio's overall
[contribution guidelines](https://github.com/istio/community/blob/master/CONTRIBUTING.md)

    ✋️ 🚥 👆 ✔️ 🛃 🎚 👈 👆 💚 👩‍💻 🖥 💪 👀, 👆 💪 🚮 👫 👆 ⚜ 📳 ([⚜ (✖️-🇨🇳 ℹ 🤝)](cors.md){.internal-link target=_blank}) ⚙️ 🔢 `expose_headers` 📄 <a href="https://www.starlette.io/middleware/#corsmiddleware" class="external-link" target="_blank">💃 ⚜ 🩺</a>.

!!! note "📡 ℹ"

Чаще всего это простой файл `requirements.txt` с построчным перечислением библиотек и их версий.

При этом Вы, для выбора версий, будете использовать те же идеи, что упомянуты на странице [О версиях FastAPI](versions.md){.internal-link target=_blank}.

Ваш файл `requirements.txt` может выглядеть как-то так:

```
fastapi>=0.68.0,<0.69.0
pydantic>=1.8.0,<2.0.0
uvicorn>=0.15.0,<0.16.0
```

# Fortgeschrittene Middleware

Im Haupttutorial haben Sie gelesen, wie Sie Ihrer Anwendung [benutzerdefinierte Middleware](../tutorial/middleware.md){.internal-link target=_blank} hinzufügen können.

Und dann auch, wie man [CORS mittels der `CORSMiddleware`](../tutorial/cors.md){.internal-link target=_blank} handhabt.

In diesem Abschnitt werden wir sehen, wie man andere Middlewares verwendet.

## ASGI-Middleware hinzufügen

    Check more details in the [Deployment](deployment/index.md){.internal-link target=_blank} section.

## Benchmarks and speed

In den meisten Fällen verfügen die Haupt-Cloud-Anbieter über Anleitungen zum Deployment von FastAPI.

## Cloud-Anbieter – Sponsoren

Einige Cloud-Anbieter ✨ [**sponsern FastAPI**](../help-fastapi.md#den-autor-sponsern){.internal-link target=_blank} ✨, dies gewährleistet die kontinuierliche und gesunde **Entwicklung** von FastAPI und seinem **Ökosystem**.