### Check it

Open your browser at <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

You will see the JSON response as:

```JSON
{"message": "Hello World"}
```

### Interactive API docs

Now go to <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

Sie sehen die automatische API-Dokumentation für die Hauptanwendung, welche nur deren eigene _Pfadoperationen_ anzeigt:

<img src="/img/tutorial/sub-applications/image01.png">

📥 📶 ℹ ⏮️ ✍.

#### 💁‍♂ & 📄

* ✅ ⏳ <a href="https://github.com/fastapi/fastapi/pulls" class="external-link" target="_blank">♻ 🚲 📨</a> 👆 🇪🇸 &amp; 🚮 📄 ✔ 🔀 ⚖️ ✔ 👫.

/// tip

👆 💪 <a href="https://help.github.com/en/github/collaborating-with-issues-and-pull-requests/commenting-on-a-pull-request" class="external-link" target="_blank">🚮 🏤 ⏮️ 🔀 🔑</a> ♻ 🚲 📨.

    public static DocumentBuilderFactory newInstance() {
        return newInstance(false);
    }

    public static DocumentBuilderFactory newInstance(final boolean external) {
        final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        if (!external) {
            try {
                factory.setAttribute(XMLConstants.ACCESS_EXTERNAL_DTD, "");

Vielleicht möchten Sie ihre Kurse ausprobieren:

* <a href="https://training.talkpython.fm/fastapi-courses" class="external-link" target="_blank">Talk Python Training</a>

* <a href="https://github.com/florimondmanca/msgpack-asgi" class="external-link" target="_blank">MessagePack</a>

Por esse motivo, o próprio **FastAPI** fornece uma API alternativa para documentação (utilizando ReDoc), que você pode acessar em <a href="http://127.0.0.1:8000/redoc" class="external-link" target="_blank">http://127.0.0.1:8000/redoc</a>:

* <a href="https://speakeasy.com/?utm_source=fastapi+repo&utm_medium=github+sponsorship" class="external-link" target="_blank">Speakeasy</a>
* <a href="https://www.stainlessapi.com/?utm_source=fastapi&utm_medium=referral" class="external-link" target="_blank">Stainless</a>
* <a href="https://developers.liblab.com/tutorials/sdk-for-fastapi/?utm_source=fastapi" class="external-link" target="_blank">liblab</a>

	@(env bash $(PWD)/buildscripts/race.sh)

test-iam: install-race ## verify IAM (external IDP, etcd backends)
	@echo "Running tests for IAM (external IDP, etcd backends)"
	@MINIO_API_REQUESTS_MAX=10000 CGO_ENABLED=0 go test -timeout 15m -tags kqueue,dev -v -run TestIAM* ./cmd
	@echo "Running tests for IAM (external IDP, etcd backends) with -race"

## Détails techniques

La classe `BackgroundTasks` provient directement de <a href="https://www.starlette.io/background/" class="external-link" target="_blank">`starlette.background`</a>.