随着Ｉｎｔｅｒｎｅｔ应用的发展，传统的Ｗｅｂ 服务器已不能满足客户端访问能力的需求，可扩展并行Ｗｅｂ 服务器群技术的研究和开发应运而生．它具有高可用、可扩展等特点．另一方面，机群系统具有良好的可扩展性能和计算能力，是实现可扩展并行Ｗｅｂ 服务器群的最好系统平台．本文在分析Ｗｅｂ 服务器特点的基础上，总结用机群系统实现可扩展并行Ｗｅｂ 服务器的优点和关键技术，提出一个系统实现方案，然后介绍在该系统基础上开发的信息搜集和检索系统．本文试图指出当前的并行／分布系统和Ｉｎｔｅｒｎｅｔ技术结合的一种可能方式 With the development of Internet applications, the traditional Web server can no longer meet the needs of client access capabilities. The research and development of extensible parallel Web server cluster technology has emerged. It has high availability, scalability and other features. On the other hand, cluster system with good scalability and computing power is the best system platform for scalable parallel Web server farm. On the basis of analyzing the characteristics of Web server, this paper summarizes the advantages and key technologies of using cluster machine system to implement extensible parallel Web server, proposes a system implementation plan, and then introduces the information collection and retrieval system based on this system. This article attempts to point out one possible way of combining current parallel / distributed systems with Internet technologies