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2 changes: 1 addition & 1 deletion docs/system-design/web-real-time-message-push.md
Original file line number Diff line number Diff line change
Expand Up @@ -221,7 +221,7 @@ SSE 与 WebSocket 作用相似,都可以建立服务端与浏览器之间的

SSE 好像一直不被大家所熟知,一部分原因是出现了 WebSocket,这个提供了更丰富的协议来执行双向、全双工通信。对于游戏、即时通信以及需要双向近乎实时更新的场景,拥有双向通道更具吸引力。

但是,在某些情况下,不需要从客户端发送数据。而你只需要一些服务器操作的更新。比如:站内信、未读消息数、状态更新、股票行情、监控数量等场景,SEE 不管是从实现的难易和成本上都更加有优势。此外,SSE 具有 WebSocket 在设计上缺乏的多种功能,例如:自动重新连接、事件 ID 和发送任意事件的能力。
但是,在某些情况下,不需要从客户端发送数据。而你只需要一些服务器操作的更新。比如:站内信、未读消息数、状态更新、股票行情、监控数量等场景,SSE 不管是从实现的难易和成本上都更加有优势。此外,SSE 具有 WebSocket 在设计上缺乏的多种功能,例如:自动重新连接、事件 ID 和发送任意事件的能力。

前端只需进行一次 HTTP 请求,带上唯一 ID,打开事件流,监听服务端推送的事件就可以了

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