# Server-Sent Events (SSE) { #server-sent-events-sse }

İstemciye veri akışını **Server-Sent Events** (SSE) ile sağlayabilirsiniz.

Bu, [JSON Lines Akışı](stream-json-lines.md) ile benzerdir ancak tarayıcılar tarafından yerel olarak desteklenen [`EventSource` API'si](https://developer.mozilla.org/en-US/docs/Web/API/EventSource) ile `text/event-stream` formatını kullanır.

/// info | Bilgi

FastAPI 0.135.0'da eklendi.

///

# События, отправляемые сервером (SSE) { #server-sent-events-sse }

Вы можете передавать данные потоком клиенту, используя Server-Sent Events (SSE).

Это похоже на [Стриминг JSON Lines](stream-json-lines.md), но использует формат `text/event-stream`, который нативно поддерживается браузерами через [`EventSource` API](https://developer.mozilla.org/en-US/docs/Web/API/EventSource).

/// info | Информация

Добавлено в FastAPI 0.135.0.

///

# イベントのテスト: lifespan と startup - shutdown { #testing-events-lifespan-and-startup-shutdown }

テストで `lifespan` を実行する必要がある場合は、`with` 文と併用して `TestClient` を使用できます:

{* ../../docs_src/app_testing/tutorial004_py310.py hl[9:15,18,27:28,30:32,41:43] *}

より詳しい内容は、[公式 Starlette ドキュメントの「テストでの lifespan の実行」](https://www.starlette.dev/lifespan/#running-lifespan-in-tests) を参照してください。

非推奨の `startup` および `shutdown` イベントについては、次のように `TestClient` を使用できます:

# Server-Sent Events (SSE) { #server-sent-events-sse }

**Server-Sent Events** (SSE) を使うと、クライアントへデータをストリーミングできます。

これは[JSON Lines のストリーミング](stream-json-lines.md)に似ていますが、`text/event-stream` フォーマットを使用します。これはブラウザがネイティブに [`EventSource` API](https://developer.mozilla.org/en-US/docs/Web/API/EventSource) でサポートしています。

/// info | 情報

FastAPI 0.135.0 で追加されました。

///

## Server-Sent Events とは { #what-are-server-sent-events }

# 서버 전송 이벤트(SSE) { #server-sent-events-sse }

브라우저 클라이언트로 데이터를 스트리밍하려면 **Server-Sent Events**(SSE)를 사용할 수 있습니다.

이는 [JSON Lines 스트리밍](stream-json-lines.md)과 비슷하지만, 브라우저가 기본적으로 [`EventSource` API](https://developer.mozilla.org/en-US/docs/Web/API/EventSource)를 통해 지원하는 `text/event-stream` 형식을 사용합니다.

/// info | 정보

FastAPI 0.135.0에 추가되었습니다.

///

## Server-Sent Events란 { #what-are-server-sent-events }

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[33:36] hl[34] *}

## Eventos enviados pelo servidor (SSE) { #server-sent-events-sse }

## Server-Sent Events (SSE) { #server-sent-events-sse }

MinIO supports persistent event store. The persistent store will backup events if MySQL connection goes offline and then replays the stored events when the broken connection comes back up. The event store can be configured by setting a directory path in `queue_dir` field, and the maximum number of events, which can be stored in a `queue_dir`, in `queue_limit` field. For example, `queue_dir` can be set to `/home/events` and `queue_limit` can be set to `1000`. By default, the `queue_limit` is set...

          maxSize = 50L * 1024L * 1024L // 50 MiB
      ))
      .build()
```

## EventListener events

Cache Events are exposed via the EventListener API.  Typical scenarios are below.

### Cache Hit

In the ideal scenario the cache can fulfill the request without any conditional call to the network.
This will skip the normal events such as DNS, connecting to the network, and downloading the response body.

        List<LogNotificationEvent> events = new ArrayList<>();
        events.add(new LogNotificationEvent(base, "ERROR", "org.test.A", "first", null));
        events.add(new LogNotificationEvent(base + 1000, "WARN", "org.test.B", "second", null));
        events.add(new LogNotificationEvent(base + 2000, "ERROR", "org.test.C", "third", null));

        String details = testableJob.testFormatDetails(events);