- Alle 15 Sekunden, wenn keine Nachricht gesendet wurde, einen **„keep alive“-`ping`-Kommentar** senden, um zu verhindern, dass einige Proxys die Verbindung schließen, wie in der [HTML-Spezifikation: Server-Sent Events](https://html.spec.whatwg.org/multipage/server-sent-events.html#authoring-notes) vorgeschlagen.
- Den Header `Cache-Control: no-cache` setzen, um **Caching** des Streams zu verhindern.

- Enviar um comentário de keep alive `ping` a cada 15 segundos quando não houver mensagens, para evitar que alguns proxies fechem a conexão, como sugerido na [especificação HTML: Server-Sent Events](https://html.spec.whatwg.org/multipage/server-sent-events.html#authoring-notes).
- Definir o cabeçalho `Cache-Control: no-cache` para evitar o cache do stream.

- CustomResourceDefinitions added support for marking versions as deprecated by setting `spec.versions[*].deprecated` to `true`, and for optionally overriding the default deprecation warning with a `spec.versions[*].deprecationWarning` field. ([#92329](https://github.com/kubernetes/kubernetes/pull/92329), [@liggitt](https://github.com/liggitt)) [SIG API Machinery]

- github.com/moby/term: [9d4ed18 → 3f7ff69](https://github.com/moby/term/compare/9d4ed18...3f7ff69)
- github.com/opencontainers/image-spec: [v1.0.1 → v1.0.2](https://github.com/opencontainers/image-spec/compare/v1.0.1...v1.0.2)
- github.com/opencontainers/runc: [v1.0.2 → v1.1.1](https://github.com/opencontainers/runc/compare/v1.0.2...v1.1.1)

## Changelog since v1.15.3

### Other notable changes

* Restores compatibility with kubectl client-side validation when structural schemas are present in a CRD which sets spec.preserveUnknownFields=true ([#82666](https://github.com/kubernetes/kubernetes/pull/82666), [@liggitt](https://github.com/liggitt))

  fun tearDown() {
    ResponseCache.setDefault(null)
    if (this::cache.isInitialized) {
      cache.delete()
    }
  }

  /**
   * Test that response caching is consistent with the RI and the spec.
   * http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.4
   */
  @Test
  fun responseCachingByResponseCode() {
    // Test each documented HTTP/1.1 code, plus the first unused value in each range.

- Enviar un comentario de **"keep alive" `ping`** cada 15 segundos cuando no ha habido ningún mensaje, para evitar que algunos proxies cierren la conexión, como se sugiere en la [Especificación HTML: Server-Sent Events](https://html.spec.whatwg.org/multipage/server-sent-events.html#authoring-notes).
- Configurar el header `Cache-Control: no-cache` para **evitar el almacenamiento en caché** del stream.

* Send a **"keep alive" `ping` comment** every 15 seconds when there hasn't been any message, to prevent some proxies from closing the connection, as suggested in the [HTML specification: Server-Sent Events](https://html.spec.whatwg.org/multipage/server-sent-events.html#authoring-notes).
* Set the `Cache-Control: no-cache` header to **prevent caching** of the stream.

[Gradle module metadata]: https://docs.gradle.org/current/userguide/publishing_gradle_module_metadata.html
[HTTP 101]: https://httpwg.org/specs/rfc9110.html#status.101
[JPMS]: https://openjdk.org/projects/jigsaw/spec/
[Ktor]: https://ktor.io/
[Retrofit]: https://square.github.io/retrofit/
[ZSTD-KMP]: https://github.com/square/zstd-kmp
[androidx_startup]: https://developer.android.com/jetpack/androidx/releases/startup

## 기술 세부사항 { #technical-details }

FastAPI는 일부 SSE 모범 사례를 기본으로 구현합니다.

- 메시지가 없을 때는 15초마다 **"keep alive" `ping` 주석**을 보내 일부 프록시가 연결을 종료하지 않도록 합니다. [HTML 사양: Server-Sent Events](https://html.spec.whatwg.org/multipage/server-sent-events.html#authoring-notes)에서 권장합니다.
- 스트림이 **캐시되지 않도록** `Cache-Control: no-cache` 헤더를 설정합니다.
- Nginx 같은 일부 프록시에서 **버퍼링을 방지**하기 위해 특수 헤더 `X-Accel-Buffering: no`를 설정합니다.