Abstract: The World Wide Web has emerged as one of the most significant applications over the past decade.Highly accessed Web sites may need to serve over a billion hits per day.The overhead for satisfying a dynamic request may be orders of magnitude more than the overhead for satisfying a static request. This article take sina iask webiste(http://iask.sina.com.cn) as an example, present an overview of techniques for efficiently serving and caching dynamic web data,Describe techniques for invoking server programs and architectures for serving dynamic web content.