The simplicity of the dependency injection system makes **FastAPI** compatible with:

* all the relational databases
* NoSQL databases
* external packages
* external APIs
* authentication and authorization systems
* API usage monitoring systems
* response data injection systems
* etc.

## Simple and Powerful { #simple-and-powerful }

- All resources within the `rbac.authorization.k8s.io/v1alpha1` and `rbac.authorization.k8s.io/v1beta1` API groups are deprecated in favor of `rbac.authorization.k8s.io/v1`, and will no longer be served in v1.20. ([#84758](https://github.com/kubernetes/kubernetes/pull/84758), [@liggitt](https://github.com/liggitt))

        UniAddress dc;
        final boolean offerBasic = enableBasic && (insecureBasic || request.isSecure());
        final String msg = request.getHeader("Authorization");
        if (msg != null && (msg.startsWith("NTLM ") || offerBasic && msg.startsWith("Basic "))) {
            if (loadBalance) {
                dc = new UniAddress(NbtAddress.getByName(domainController, 0x1C, null));

- kube-apiserver now reloads the `--authorization-config` file when it changes. Reloads increment the `apiserver_authorization_config_controller_automatic_reload_last_timestamp_seconds` timestamp metric, with `status="success"` for successful reloads and `status="failed"` for failed reloads. Failed reloads keep using the previously loaded authorization configuration.

            final boolean skipAuthentication) throws IOException, ServletException {
        Address dc;
        String msg;
        NtlmPasswordAuthentication ntlm = null;
        msg = req.getHeader("Authorization");
        final boolean offerBasic = this.enableBasic && (this.insecureBasic || req.isSecure());

        if (msg != null && (msg.startsWith("NTLM ") || offerBasic && msg.startsWith("Basic "))) {

OpenAPIでは、以下のセキュリティスキームを定義しています:

* `apiKey`: アプリケーション固有のキーで、これらのものから取得できます。
    * クエリパラメータ
    * ヘッダー
    * クッキー
* `http`: 標準的なHTTP認証システムで、これらのものを含みます。
    * `bearer`: ヘッダ `Authorization` の値が `Bearer ` で、トークンが含まれます。これはOAuth2から継承しています。
    * HTTP Basic認証
    * HTTP ダイジェスト認証など
* `oauth2`: OAuth2のセキュリティ処理方法（「フロー」と呼ばれます）のすべて。
    * これらのフローのいくつかは、OAuth 2.0認証プロバイダ（Google、Facebook、X (Twitter)、GitHubなど）を構築するのに適しています。

  - [beta] Added ability to authenticate/authorize access to the Kubelet API ([docs](http://kubernetes.io/docs/admin/kubelet-authentication-authorization/)) ([kubernetes/features#89](https://github.com/kubernetes/enhancements/issues/89))
- **AWS**

MinIO exposes a custom S3 STS API endpoint as `Action=AssumeRoleWithCertificate`. A client has to send an HTTP `POST` request to `https://<host>:<port>?Action=AssumeRoleWithCertificate&Version=2011-06-15`. Since the authentication and authorization happens via X.509 certificates the client has to send the request over **TLS** and has to provide
a client certificate.

//
// When all query parameters are omitted, returns mappings for all policies.
func (a adminAPIHandlers) ListLDAPPolicyMappingEntities(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	// Check authorization.

	objectAPI, cred := validateAdminReq(ctx, w, r,
		policy.ListGroupsAdminAction, policy.ListUsersAdminAction, policy.ListUserPoliciesAdminAction)
	if objectAPI == nil {
		return
	}

	// Validate API arguments.

   *  * [OkHttpClient.followRedirects] must be true to follow redirects.
   *  * [OkHttpClient.followSslRedirects] must be true to follow redirects that add or remove HTTPS.
   *  * [OkHttpClient.authenticator] must respond to an authorization challenge.
   *
   * @param networkResponse the intermediate response that may require a follow-up request.
   * @param nextRequest the follow-up request that will be made. Null if no follow-up will be made.
   */