zip, and deb packages and all the plugins. It will then run the tests on every
available system. This will take a very long time.
+
Fortunately, the various systems under test have their own Gradle tasks under
`qa/os`. To find the systems tested, do a listing of the `qa/os` directory.
To find out what packaging combinations can be tested on a system, run
the `tasks` task. For example:
+
----------------------------------

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

## Client WebSocket { #websockets-client }

### En production { #in-production }

Dans votre système de production, vous avez probablement un frontend créé avec un framework moderne comme React, Vue.js ou Angular.

// error returned in IAM subsystem when an external users systems is configured.
var errIAMActionNotAllowed = errors.New("Specified IAM action is not allowed")

// error returned in IAM service account
var errIAMServiceAccountNotAllowed = errors.New("Specified service account action is not allowed")

// error returned in IAM subsystem when IAM sub-system is still being initialized.

### Injection de dépendances { #dependency-injection }

FastAPI inclut un système d’<dfn title='aussi connu sous le nom de « composants », « ressources », « services », « fournisseurs »'><strong>Injection de dépendances</strong></dfn> extrêmement simple à utiliser, mais extrêmement puissant.

import com.google.common.escape.Escapers;

/**
 * {@code Escaper} instances suitable for strings to be included in XML attribute values and
 * elements' text contents. When possible, avoid manual escaping by using templating systems and
 * high-level APIs that provide autoescaping. For example, consider <a
 * href="http://www.xom.nu/">XOM</a>.
 *
 * <p><b>Note:</b> Currently the escapers provided by this class do not escape any characters

為了達成這點，你通常會有一個「獨立的程式」來確保你的應用在開機時會被啟動。很多情況下，它也會確保其他元件或應用一併啟動，例如資料庫。

### 開機自動啟動的工具範例 { #example-tools-to-run-at-startup }

能做到這件事的工具包括：

- Docker
- Kubernetes
- Docker Compose
- Docker 的 Swarm 模式
- Systemd
- Supervisor
- 由雲端供應商在其服務內部處理
- 其他...

我會在後續章節給出更具體的例子。

## 重新啟動 { #restarts }

和確保你的應用在開機時會執行一樣，你大概也會希望在發生失敗之後，它能「自動重新啟動」。

### 人都會犯錯 { #we-make-mistakes }

///

## Types et validation { #types-and-validation }

Ces variables d'environnement ne gèrent que des chaînes de texte, car elles sont externes à Python et doivent être compatibles avec d'autres programmes et le reste du système (et même avec différents systèmes d'exploitation, comme Linux, Windows, macOS).

    * All this would also work for deeply nested JSON objects.
* Convert from and to JSON automatically.
* Document everything with OpenAPI, that can be used by:
    * Interactive documentation systems.
    * Automatic client code generation systems, for many languages.
* Provide 2 interactive documentation web interfaces directly.

---

We just scratched the surface, but you already get the idea of how it all works.

///

## Typen und Validierung { #types-and-validation }

Diese Umgebungsvariablen können nur Text-Zeichenketten verarbeiten, da sie außerhalb von Python liegen und mit anderen Programmen und dem Rest des Systems (und sogar mit verschiedenen Betriebssystemen wie Linux, Windows, macOS) kompatibel sein müssen.

	@wget -q -c https://github.com/minio/pkger/releases/download/v2.3.11/pkger_2.3.11_linux_amd64.deb
	@wget -q -c https://raw.githubusercontent.com/minio/minio-service/v1.1.1/linux-systemd/distributed/minio.service
	@sudo apt install ./pkger_2.3.11_linux_amd64.deb --yes
	@mkdir -p minio-release/$(GOOS)-$(GOARCH)/archive
	@cp -af ./minio minio-release/$(GOOS)-$(GOARCH)/minio