*   <li>{@link Iterators}
 *   <li>{@link Lists}
 *   <li>{@link Maps}
 *   <li>{@link MoreCollectors}
 *   <li>{@link Multimaps}
 *   <li>{@link Multisets}
 *   <li>{@link ObjectArrays}
 *   <li>{@link Queues}
 *   <li>{@link Sets}
 *   <li>{@link Streams}
 *   <li>{@link Tables}
 * </ul>
 *
 * <h2>Abstract implementations</h2>
 *
 * <ul>
 *   <li>{@link AbstractIterator}

# Eventos Enviados pelo Servidor (SSE) { #server-sent-events-sse }

Você pode transmitir dados para o cliente usando Server-Sent Events (SSE).

Isso é semelhante a [Stream de JSON Lines](stream-json-lines.md), mas usa o formato `text/event-stream`, que é suportado nativamente pelos navegadores com a [`EventSource` API](https://developer.mozilla.org/en-US/docs/Web/API/EventSource).

/// info | Informação

Adicionado no FastAPI 0.135.0.

///

    title: The Gold Standard in Retail Account Linking
    img: https://fastapi.tiangolo.com/img/sponsors/subtotal.svg
  - url: https://docs.railway.com/guides/fastapi?utm_medium=integration&utm_source=docs&utm_campaign=fastapi
    title: Deploy enterprise applications at startup speed
    img: https://fastapi.tiangolo.com/img/sponsors/railway.png

Ahora, veamos cómo podrías usar eso para devolver un response personalizado.

Digamos que quieres devolver un response en [XML](https://en.wikipedia.org/wiki/XML).

Podrías poner tu contenido XML en un string, poner eso en un `Response`, y devolverlo:

{* ../../docs_src/response_directly/tutorial002_py310.py hl[1,18] *}

 * conventional bounded queues, which either block or reject new elements when full.
 *
 * <p>This implementation is based on the <a
 * href="http://portal.acm.org/citation.cfm?id=6621">min-max heap</a> developed by Atkinson, et al.
 * Unlike many other double-ended priority queues, it stores elements in a single array, as compact

			// extract the first, which should be the client IP.
			if match := forRegex.FindStringSubmatch(fwd); len(match) > 1 {
				// IPv6 addresses in Forwarded headers are quoted-strings. We strip
				// these quotes.
				addr = strings.Trim(match[1], `"`)
			}
		}
	}

	return addr
}

// GetSourceIPRaw retrieves the IP from the request headers
// and falls back to r.RemoteAddr when necessary.

 *
 * <p>An evicting queue must be configured with a maximum size. Each time an element is added to a
 * full queue, the queue automatically removes its head element. This is different from conventional
 * bounded queues, which either block or reject new elements when full.
 *
 * <p>This class is not thread-safe, and does not accept null elements.
 *
 * @author Kurt Alfred Kluever
 * @since 15.0
 */
@GwtCompatible

If you plan to contribute on a regular basis, please consider filing a [contributor license agreement][cla].

Additional Resources
--------------------

+ [Contributing patches](https://maven.apache.org/guides/development/guide-maven-development.html#Creating_and_submitting_a_patch)
+ [Apache Maven JIRA project page](https://issues.apache.org/jira/projects/MNG/)
+ [Contributor License Agreement][cla]

	if err = config.Validate(region, globalEventNotifier.targetList); err != nil {
		arnErr, ok := err.(*event.ErrARNNotFound)
		if ok {
			for i, queue := range config.QueueList {
				// Remove ARN not found queues, because we previously allowed
				// adding unexpected entries into the config.
				//
				// With newer config disallowing changing / turning off
				// notification targets without removing ARN in notification

En particular, esta puede ser una buena alternativa a la lógica en un middleware.

Por ejemplo, si quieres leer o manipular el request body antes de que sea procesado por tu aplicación.

/// danger | Advertencia

Esta es una funcionalidad "avanzada".

Si apenas estás comenzando con **FastAPI**, quizás quieras saltar esta sección.

///

## Casos de uso { #use-cases }

Algunos casos de uso incluyen: