# 何时应考虑使用应用层 WebSockets？

第 7 层 WebSockets 应在需要客户端和服务器之间进行实时、双向和持久通信时使用。这是因为 WebSockets 通过维持客户端和服务器之间的持久连接，实现了高效和低延迟的通信，避免了每次请求都需要建立和断开新连接的开销。

WebSockets 的一些常见用例包括：

1. 在线游戏：WebSockets 可用于创建需要玩家与服务器之间低延迟通信的实时多人游戏。
2. 聊天应用：WebSockets 可用于创建需要实时消息和通知的聊天应用。
3. 协作编辑：WebSockets 可用于实现多个用户之间的实时协作，例如文档编辑应用。
4. 实时监控和通知：WebSockets 可用于提供事件的实时更新和通知，例如股票价格、天气更新或社交媒体动态。


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