处理 JS 聊天框的有效方法是什么？
假设我想编写一个 AJAX 聊天框，只是一些简单的东西，我写一些文本，然后将其发布。我们甚至不用太担心框中的用户名。
第一直觉告诉我只需编写一个表并将数据发布到其中，然后每隔几秒查询一次。
让我们假设这不是 2011 年，计算机很便宜，我们可以接受每 5 秒更新一次的缓慢滞后的聊天框，或者通过 SQL 风暴减慢整个服务器的速度。
有哪些替代方案？我可以用 XMPP 做点什么吗？如果除了我最喜欢的服务器端语言（和一些 SQL）之外我没有其他语言怎么办？我可以以某种巧妙的方式使用消息哈希吗？我可以做什么来限制请求数量？
我正在寻找一个很好的计划，用于编写基于网络的聊天框背后的软件，该计划非常资源高效且灵活。我确信我们正在为我们已有的聊天室做一些巧妙的事情。
Lets say I want to write an AJAX chat box, just something simple, I write some text, and it gets posted up. Lets not even worry too much about names of users in the box.
First instincts tell me to just write a table and post data into it, and query every few seconds.
Lets pretend this isn't 2011 and computers a cheap and we're okay with slow laggy chat boxes that update every 5 seconds, or slow the entire server down with a storm of SQL.
What are some alternatives? Could I do something with XMPP? What if I didn't have anything other than my favorite server-side language (and some SQL)? Could I use message hashes in some neat way? What can I do to limit the number of requests?
What I'm looking for is a great plan for writing the software behind a web-based chat box, that is very resource efficient, and flexible. I'm sure we're doing something neat here on SO for the chatrooms we already have.
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你的问题是你时不时地进行投票。您真正想要的是持续连接以传输数据。
您可以尝试使用 Comet 方法 - 一个可以保持打开状态以发送的流连接聊天消息下降。
还有一个称为长轮询的技巧 - 您保持连接打开，直到收到新消息，然后关闭它并开始新消息。
Your problem is you're polling every now and then. What you really want is a constant connection to stream data with.
You could try using the Comet method - a streaming connection you can keep open to send chat messages down.
There's also a trick called long-polling - You keep the connection open until you receive a new message, then close it and start a new one.