如何叽叽喳喳实现异步通知新的鸣叫？

How does twitter implement the asynchronous notifications for new tweets ?

如果它是服务器推送技术的一种形式，没有任何一个知道或建议如何此功能可能已经实施了吗？

If it is a form of server push technology, does any one know or suggest how this feature could have been implemented ?

感谢

推荐答案

他们不推。他们使用window.setTimeout JavaScript函数定期轮询通过AJAX的服务器，如果有新的结果的话，它们显示通知栏。

They don't push. They use the window.setTimeout JavaScript function to periodically poll the Server through AJAX, and if there are new results then they display that notification bar.