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HomeBackend DevelopmentPHP Tutorial拍卖页面,怎么同步刷新显示最高价格

拍卖页面,如何同步刷新显示最高价格?
有个商品拍卖的页面,在某个div里显示当前商品的最高出价。

如果有个用户提交最新的价格后,所有打开这个网页的人,会看到页面上的“最高出价”的数字会自动刷新。

这样的功能已经有网站实现了,但是我没研究明白他是如何作到的,好像不是ajax每秒刷新(如果是这样,会给服务器造成很大的负担)。

我突然想到以前的聊天室程序,当你进入聊天室后,即使你不说话,别人说的话也能即时刷新看到。

高手帮忙指点一下思路……


------解决方案--------------------
推送?
------解决方案--------------------
用抓包工具抓一下 看看他們大體用的是主動還是被動...弄不好人家就是ajax...
------解决方案--------------------
既然是 没研究明白他是如何作到的 怎么能武断的说 不是ajax每秒刷新
------解决方案--------------------
是ajax不停在刷的。
json数据。
http://www.4.cn/api/auction/live/aid/88261/sid/?_=1329709450395
------解决方案--------------------

探讨

引用:

等了半天沒看到有刷新的....

http://www.4.cn/auction/detail/aid/88261

------解决方案--------------------
有一种东西,叫long-polling。不知道是。。。?
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