Pero primero, vamos a revisar algunos pequeños conceptos.

## ¿Con prisa? { #in-a-hurry }

Si no te importan ninguno de estos términos y solo necesitas agregar seguridad con autenticación basada en nombre de usuario y contraseña *ahora mismo*, salta a los siguientes capítulos.

## OAuth2 { #oauth2 }

        tester.numCallsToVerify,
        tester.numCallsToNewTargetIterator * STEPS);
  }

  public void testVerifyCanThrowAssertionThatFailsTest() {
    String message = "Important info about why verify failed";
    IteratorTester<Integer> tester =
        new IteratorTester<Integer>(
            1, MODIFIABLE, newArrayList(1, 2, 3), IteratorTester.KnownOrder.KNOWN_ORDER) {
          @Override

Se você estiver ajudando muitas pessoas com suas perguntas, você se tornará um(a) [Especialista em FastAPI](fastapi-people.md#fastapi-experts){.internal-link target=_blank} oficial. 🎉

Apenas lembre-se, o ponto mais importante é: tente ser gentil. As pessoas chegam com frustrações e, em muitos casos, não perguntam da melhor forma, mas tente ao máximo ser gentil. 🤗

Entonces, para evitar colisiones de ID, cuando crees el token JWT para el usuario, podrías prefijar el valor de la clave `sub`, por ejemplo, con `username:`. Así, en este ejemplo, el valor de `sub` podría haber sido: `username:johndoe`.

Lo importante a tener en cuenta es que la clave `sub` debería tener un identificador único a lo largo de toda la aplicación, y debería ser un string.

## Revisa { #check-it }

Because this code is executed before the application **starts** taking requests, and right after it **finishes** handling requests, it covers the whole application **lifespan** (the word "lifespan" will be important in a second 😉).

     * <p>
     * This type registry is NOT used by Maven Core: Maven replaces it during Session creation with a type registry
     * that supports extending it (i.e. via Maven Extensions).
     * <p>
     * Important: this "static" list of types should be in-sync with core provided types.
     */
    protected ArtifactTypeRegistry getArtifactTypeRegistry() {
        DefaultArtifactTypeRegistry stereotypes = new DefaultArtifactTypeRegistry();

        a full-time Guava team member. [Feedback](https://stackoverflow.com/a/4543114) from our
        users indicates that they really appreciate Guava's high power-to-weight ratio. It's
        important to us to keep Guava as easy to use and understand as we can. That means boiling
        features down to compact but powerful abstractions, and controlling feature bloat carefully.

```Python
callback_url = "https://example.com/api/v1/invoices/events/"
httpx.post(callback_url, json={"description": "Invoice paid", "paid": True})
```

Pero posiblemente la parte más importante del callback es asegurarse de que el usuario de tu API (el desarrollador externo) implemente la *API externa* correctamente, de acuerdo con los datos que *tu API* va a enviar en el request body del callback, etc.

 * using a lock, however it is dangerous to dispatch listeners while holding a lock because they
 * might run on the {@code directExecutor()} or be otherwise re-entrant (call back into your
 * object). So it is important to not call {@link #dispatch} while holding any locks. This is why
 * {@link #enqueue} and {@link #dispatch} are 2 different methods. It is expected that the decision

        tester.numCallsToVerify,
        tester.numCallsToNewTargetIterator * STEPS);
  }

  public void testVerifyCanThrowAssertionThatFailsTest() {
    String message = "Important info about why verify failed";
    IteratorTester<Integer> tester =
        new IteratorTester<Integer>(
            1, MODIFIABLE, newArrayList(1, 2, 3), IteratorTester.KnownOrder.KNOWN_ORDER) {
          @Override