La sous‑application peut également avoir ses propres sous‑applications montées et tout fonctionnera correctement, car FastAPI gère automatiquement tous ces `root_path`.

Ce comportement d’empilement garantit que les middlewares s’exécutent dans un ordre prévisible et contrôlable.

## Autres middlewares { #other-middlewares }

Vous pouvez en lire davantage sur d’autres middlewares dans le [Guide de l’utilisateur avancé : Middleware avancé](../advanced/middleware.md).

Vous pouvez déclarer des informations supplémentaires dans `Field`, `Query`, `Body`, etc. Elles seront incluses dans le JSON Schema généré.

Vous en apprendrez davantage sur l'ajout d'informations supplémentaires plus loin dans les documents, lorsque vous apprendrez à déclarer des exemples.

/// warning | Alertes

Depending on code in this package is bad and will cause you problems with any upgrade! But the 4.x
will be particularly painful to naughty developers that import from this package! We changed a lot
to take advantage of sweet Kotlin features.

#### Credentials.basic()

The username and password parameters to `Credentials.basic()` are now non-null strings. In OkHttp
3.x, null would yield a username or password of "null".

/**
 * Adapts a [java.net.Socket] to MockWebServer's needs.
 *
 * Note that [asOkioSocket] returns a socket that closes the underlying [java.net.Socket] when both
 * of its component streams are closed. This class takes advantage of that.
 */
internal class MockWebServerSocket(
  val javaNetSocket: Socket,
) : Closeable,
  BufferedSocket {
  private val delegate = javaNetSocket.asOkioSocket()
  private val closedLatch = CountDownLatch(2)

## Introduction

Returns a set of temporary security credentials that you can use to access MinIO resources. AssumeRole requires authorization credentials for an existing user on MinIO. The advantages of this API are

///

/// info | Informação

Neste exemplo utilizamos cabeçalhos personalizados inventados `X-Key` e `X-Token`.

Mas em situações reais, como implementações de segurança, você pode obter mais vantagens em usar as [Ferramentas de segurança integradas (o próximo capítulo)](../security/index.md).

///

## Erros das dependências e valores de retorno { #dependencies-errors-and-return-values }

         * It has an added advantage since you can you easily switch to different hardware accelerators (cpu, gpu, tpu) as per the task.
         * All you need is a good internet connection and you are all set.

Following are advantages for using temporary credentials:

- Eliminates the need to embed long-term credentials with an application.
- Eliminates the need to provide access to buckets and objects without having to define static credentials.

Now, MinIO encrypts IAM / configuration and S3 objects with a KMS, if present. This
change unified the key-management aspect within MinIO.

The unified KMS-based approach has several advantages:

- Key management is now centralized. There is one way to change or rotate encryption keys.
   There used to be two different mechanisms - one for regular S3 objects and one for IAM data.