- [alpha] Kubelet launches container in a per pod cgroup hierarchy based on quality of service tier ([kubernetes/features#126](https://github.com/kubernetes/enhancements/issues/126))
  - [beta] Kubelet integrates with memcg notification API to detect when a hard eviction threshold is crossed ([kubernetes/features#125](https://github.com/kubernetes/enhancements/issues/125))

app.add_middleware(UnicornMiddleware, some_config="rainbow")
```

`app.add_middleware()` recibe una clase de middleware como primer argumento y cualquier argumento adicional que se le quiera pasar al middleware.

## Middlewares integrados { #integrated-middlewares }

**FastAPI** incluye varios middlewares para casos de uso común, veremos a continuación cómo usarlos.

/// note | Detalles Técnicos

app.add_middleware(UnicornMiddleware, some_config="rainbow")
```

`app.add_middleware()` recebe uma classe de middleware como o primeiro argumento e quaisquer argumentos adicionais a serem passados para o middleware.

## Middlewares Integrados { #integrated-middlewares }

**FastAPI** inclui vários middlewares para casos de uso comuns, veremos a seguir como usá-los.

/// note | Detalhes Técnicos

    * UUID.
    * ...and others.

All the validation is handled by the well-established and robust **Pydantic**.

### Security and authentication { #security-and-authentication }

Security and authentication integrated. Without any compromise with databases or data models.

All the security schemes defined in OpenAPI, including:

* HTTP Basic.

* Serveur Python web **prêt à utiliser en production** utilisant Uvicorn et Gunicorn.
* Déploiement CI/CD Kubernetes pour **Azure DevOps** (AKS).
* **Multilangues**. Choisissez facilement l'une des langues intégrées à spaCy durant la mise en place du projet.

* **Pas de prise de tête**:
    * Pas de nouveau langage de définition de schéma à apprendre.
    * Si vous connaissez le typage en python vous savez comment utiliser Pydantic.
* Aide votre **<abbr title="Integrated Development Environment, il s'agit de votre éditeur de code">IDE</abbr>/<abbr title="Programme qui analyse le code à la recherche d'erreurs">linter</abbr>/cerveau**:

* **Sin complicaciones**:
    * Sin micro-lenguaje de definición de esquemas nuevo que aprender.
    * Si conoces los tipos en Python sabes cómo usar Pydantic.
* Se lleva bien con tu **<abbr title="Integrated Development Environment – Entorno de Desarrollo Integrado: similar a un editor de código">IDE</abbr>/<abbr title="Un programa que verifica errores de código">linter</abbr>/cerebro**:

# GraphQL { #graphql }

As **FastAPI** is based on the **ASGI** standard, it's very easy to integrate any **GraphQL** library also compatible with ASGI.

You can combine normal FastAPI *path operations* with GraphQL on the same application.

/// tip

**GraphQL** solves some very specific use cases.

It has **advantages** and **disadvantages** when compared to common **web APIs**.

Then you can give this token to a user directly or a third party, to interact with your API with a set of restrictions.

You can learn how to use them and how they are integrated into **FastAPI** later in the **Advanced User Guide**.

## Recap { #recap }

With what you have seen up to now, you can set up a secure **FastAPI** application using standards like OAuth2 and JWT.

                                "application/json": {
                                    "schema": {},
                                },
                            },
                            "description": "The GraphiQL integrated development environment.",
                        },
                        "404": {
                            "description": "Not found if GraphiQL or query via GET are not enabled.",
                        },