```

## Parámetros de query requeridos

Cuando declaras un valor por defecto para los parámetros que no son de path (por ahora solo hemos visto parámetros de query), entonces no es requerido.

Si no quieres añadir un valor específico sino solo hacerlo opcional, pon el valor por defecto como `None`.

Pero cuando quieres hacer que un parámetro de query sea requerido, puedes simplemente no declararle un valor por defecto:

* <a href="https://www.python-httpx.org" target="_blank"><code>httpx</code></a> - Requerido si quieres usar el `TestClient`.
* <a href="https://jinja.palletsprojects.com" target="_blank"><code>jinja2</code></a> - Requerido si quieres usar la configuración por defecto de templates.

	if isRequestPresignedSignatureV4(r) {
		// X-Amz-Content-Sha256, if not set in presigned requests, checksum
		// will default to 'UNSIGNED-PAYLOAD'.
		defaultSha256Cksum = unsignedPayload
		v, ok = r.Form[xhttp.AmzContentSha256]
		if !ok {
			v, ok = r.Header[xhttp.AmzContentSha256]
		}
	} else {
		// X-Amz-Content-Sha256, if not set in signed requests, checksum
		// will default to sha256([]byte("")).
		defaultSha256Cksum = emptySHA256

* Inclusive las dependencias pueden tener dependencias creando una jerarquía o un **"grafo" de dependencias**.
* Todas son **manejadas automáticamente** por el framework.
* Todas las dependencias pueden requerir datos de los requests y aumentar las restricciones del *path operation* y la documentación automática.
* **Validación automática** inclusive para parámetros del *path operation* definidos en las dependencias.

    * A Python `datetime.datetime`.
    * In requests and responses will be represented as a `str` in ISO 8601 format, like: `2008-09-15T15:53:00+05:00`.
* `datetime.date`:
    * Python `datetime.date`.
    * In requests and responses will be represented as a `str` in ISO 8601 format, like: `2008-09-15`.
* `datetime.time`:
    * A Python `datetime.time`.
    * In requests and responses will be represented as a `str` in ISO 8601 format, like: `14:23:55.003`.

    * Wird in Requests und Responses als `str` dargestellt.
* `datetime.datetime`:
    * Ein Python-`datetime.datetime`.
    * Wird in Requests und Responses als `str` im ISO 8601-Format dargestellt, etwa: `2008-09-15T15:53:00+05:00`.
* `datetime.date`:
    * Python-`datetime.date`.
    * Wird in Requests und Responses als `str` im ISO 8601-Format dargestellt, etwa: `2008-09-15`.

}

// LimitResponse defines how to handle requests that can not be executed right now.
// +union
message LimitResponse {
  // `type` is "Queue" or "Reject".
  // "Queue" means that requests that can not be executed upon arrival
  // are held in a queue until they can be executed or a queuing limit
  // is reached.
  // "Reject" means that requests that can not be executed upon arrival
  // are rejected.

The same way, you can define logic (code) that should be executed when the application is **shutting down**. In this case, this code will be executed **once**, **after** having handled possibly **many requests**.

### Request metrics

Metrics about requests served by the current node.

| Path            | Description                                   |
|-----------------|-----------------------------------------------|
| `/api/requests` | Metrics over all requests.                    |
| `/bucket/api`   | Metrics over all requests for a given bucket. |

#### `/api/requests`

requests_max                    (number)    set the maximum number of concurrent requests (default: 'auto')
cluster_deadline                (duration)  set the deadline for cluster readiness check (default: '10s')
cors_allow_origin               (csv)       set comma separated list of origins allowed for CORS requests (default: '*')