服务器推送技术研究

Study on Server Push Technology

传统B／S应用中，浏览器中的页面每次需要手动刷新才能从服务器端获得最新的数据，存在一定的时间延迟和较差的用户体验。该文首先阐述上述问题的解决思路和服务器推送技术的发展，着重介绍使用HTTP长连接、无须浏览器安装插件的的Comet方案，给出了服务器推送的三种具体实现方式。

In the traditional B/S application, the page in the browser need to manually refresh to get the latest data every time from the server side, there is a certain time delay and poor user experience. This paper first describes the above problem solving ideas and the devel- opment of server-push technology, focuses on the Comnet which use HTTP long connection and need not install the plug-I, lists the three specific implementations.