期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2002
卷号：XXXIV Part 2
页码：101-106
出版社：Copernicus Publications
摘要：As the development of Internet technology, it's become the hot trend to issue all kinds information and to provide information service on the web. This trend makes the geographic information issued on the web and developed greatly. The technique to provide the service of geographic spatial information is called as WebGIS. WebGIS enables the proceeding of spatial analyzing done on the network and makes all the spatial information data accessed through the Internet. WebGIS enlarges the source of spatial data, enhances the stylish of GIS and promotes the depth and extend of the application of geographic spatial information. It's very significance to the subject of GIS. As WebGIS applies extensively and provides more functions, more and more people visit the web station that provides the services. The capacity of the server has becoming a bottleneck that prevents the development of WebGIS. To improve the server's capability and response speed, the host machine has been enhanced again and again. Compared with the expensive high-ability host computer or the SMP computer, multi-server has been applied extensive in electron-business and the web information service for the lowest price and high-ability. This paper proposes a model to solve the problem that single server can't assume heavy burden, which provides the service of WebGIS, and illuminates how to balance the server's burden in this system dynamically. We can serve a great number of clients throughout the world that need the service of WebGIS through the Internet based on the model of multi-server
