# Middleware Avanzado { #advanced-middleware }

En el tutorial principal leíste cómo agregar [Middleware Personalizado](../tutorial/middleware.md){.internal-link target=_blank} a tu aplicación.

Y luego también leíste cómo manejar [CORS con el `CORSMiddleware`](../tutorial/cors.md){.internal-link target=_blank}.

En esta sección veremos cómo usar otros middlewares.

## Agregando middlewares ASGI { #adding-asgi-middlewares }

* **Requisição**: MiddlewareB → MiddlewareA → rota

* **Resposta**: rota → MiddlewareA → MiddlewareB

Esse comportamento de empilhamento garante que os middlewares sejam executados em uma ordem previsível e controlável.

## Outros middlewares { #other-middlewares }

Mais tarde, você pode ler mais sobre outros middlewares no [Guia do usuário avançado: Middleware avançado](../advanced/middleware.md){.internal-link target=_blank}.

app.add_middleware(MiddlewareB)
```

Dies führt zu folgender Ausführungsreihenfolge:

* **Request**: MiddlewareB → MiddlewareA → Route

* **Response**: Route → MiddlewareA → MiddlewareB

Dieses Stapelverhalten stellt sicher, dass Middlewares in einer vorhersehbaren und kontrollierbaren Reihenfolge ausgeführt werden.

## Andere Middlewares { #other-middlewares }

app.add_middleware(MiddlewareB)
```

Это приводит к следующему порядку выполнения:

* **Запрос**: MiddlewareB → MiddlewareA → маршрут

* **Ответ**: маршрут → MiddlewareA → MiddlewareB

Такое стековое поведение обеспечивает предсказуемый и управляемый порядок выполнения middleware.

## Другие middleware { #other-middlewares }

# Advanced Middleware { #advanced-middleware }

In the main tutorial you read how to add [Custom Middleware](../tutorial/middleware.md){.internal-link target=_blank} to your application.

And then you also read how to handle [CORS with the `CORSMiddleware`](../tutorial/cors.md){.internal-link target=_blank}.

In this section we'll see how to use other middlewares.

## Adding ASGI middlewares { #adding-asgi-middlewares }

# Fortgeschrittene Middleware { #advanced-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.

* **Request**: MiddlewareB → MiddlewareA → route

* **Response**: route → MiddlewareA → MiddlewareB

This stacking behavior ensures that middlewares are executed in a predictable and controllable order.

## Other middlewares { #other-middlewares }

You can later read more about other middlewares in the [Advanced User Guide: Advanced Middleware](../advanced/middleware.md){.internal-link target=_blank}.

在任何*路径操作*收到`request`前,可以添加要和请求一起运行的代码.

也可以在*响应*生成但是返回之前添加代码.

例如你可以添加自定义请求头 `X-Process-Time` 包含以秒为单位的接收请求和生成响应的时间:

{* ../../docs_src/middleware/tutorial001.py hl[10,12:13] *}

## 其他中间件

你可以稍后在 [Advanced User Guide: Advanced Middleware](../advanced/middleware.md){.internal-link target=_blank}阅读更多关于中间件的教程.

# Middleware

There are several middlewares available provided by Starlette directly.

Read more about them in the [FastAPI docs for Middleware](https://fastapi.tiangolo.com/advanced/middleware/).

::: fastapi.middleware.cors.CORSMiddleware

It can be imported from `fastapi`:

```python
from fastapi.middleware.cors import CORSMiddleware
```

::: fastapi.middleware.gzip.GZipMiddleware

It can be imported from `fastapi`:

# Middleware Avançado { #advanced-middleware }

No tutorial principal você leu como adicionar [Middleware Personalizado](../tutorial/middleware.md){.internal-link target=_blank} à sua aplicação.

E então você também leu como lidar com [CORS com o `CORSMiddleware`](../tutorial/cors.md){.internal-link target=_blank}.

Nesta seção, veremos como usar outros middlewares.

## Adicionando middlewares ASGI { #adding-asgi-middlewares }