labelTypeService.store(entity);
                saveInfo(messages -> messages.addSuccessCrudCreateCrudTable(GLOBAL));
            } catch (final Exception e) {
                logger.warn("Failed to process a request.", e);
                throwValidationError(messages -> messages.addErrorsCrudFailedToCreateCrudTable(GLOBAL, buildThrowableMessage(e)),
                        this::asEditHtml);
            }
        }).orElse(() -> {

/// tip | Tipp

Im nächsten Kapitel erfahren Sie, welche anderen „Dinge“, außer Funktionen, Sie als Abhängigkeiten verwenden können.

///

Immer wenn ein neuer <abbr title="Request – Anfrage: Daten, die der Client zum Server sendet">Request</abbr> eintrifft, kümmert sich **FastAPI** darum:

* Ihre Abhängigkeitsfunktion („Dependable“) mit den richtigen Parametern aufzurufen.
* Sich das Ergebnis von dieser Funktion zu holen.

Diskten dosya okumak normalde maliyetli (yavaş) bir işlemdir; bu yüzden muhtemelen bunu yalnızca bir kez yapıp aynı settings nesnesini tekrar kullanmak istersiniz. Her request için yeniden okumak istemezsiniz.

Ancak her seferinde şunu yaptığımızda:

```Python
Settings()
```

yeni bir `Settings` nesnesi oluşturulur ve oluşturulurken `.env` dosyasını yeniden okur.

    monthly_fee: float
    start_date: datetime


@app.webhooks.post("new-subscription")
def new_subscription(body: Subscription):
    """
    When a new user subscribes to your service we'll send you a POST request with this
    data to the URL that you register for the event `new-subscription` in the dashboard.
    """


@app.get("/users/")
def read_users():

* **Editor support**.
* **Type checks**.

...and **FastAPI** uses the same declarations to:

* **Define requirements**: from request path parameters, query parameters, headers, bodies, dependencies, etc.
* **Convert data**: from the request to the required type.
* **Validate data**: coming from each request:
    * Generating **automatic errors** returned to the client when the data is invalid.
* **Document** the API using OpenAPI:

 *  @author Victor Jonsson, http://victorjonsson.se
 *  @license MIT
 */

   * {@link Long#MAX_VALUE} or {@link Long#MIN_VALUE}. This behavior can be useful when decomposing
   * a duration in order to call a legacy API which requires a {@code long, TimeUnit} pair.
   */
  // We use this method only for cases in which we need to decompose to primitives.
  @SuppressWarnings({"GoodTime-ApiWithNumericTimeUnit", "GoodTime-DecomposeToPrimitive"})

/// note | Détails techniques

`Cookie` est une classe « sœur » de `Path` et `Query`. Elle hérite également de la même classe commune `Param`.

Mais rappelez-vous que lorsque vous importez `Query`, `Path`, `Cookie` et d'autres depuis `fastapi`, il s'agit en réalité de fonctions qui renvoient des classes spéciales.

///

/// info

	// If resp.Body is not closed, the Client's underlying RoundTripper
	// (typically Transport) may not be able to reuse a persistent TCP
	// connection to the server for a subsequent "keep-alive" request.
	if respBody != nil {
		// Drain any remaining Body and then close the connection.
		// Without this closing connection would disallow re-using
		// the same connection for future uses.

Pero cada vez que hacemos:

```Python
Settings()
```

se crearía un nuevo objeto `Settings`, y al crearse leería el archivo `.env` nuevamente.

Si la función de dependencia fuera simplemente así:

```Python
def get_settings():
    return Settings()
```