Improvement of Spatial Data Service’s Performance with Access Control for Business System by using Web Caching

The research on implementing the access control of the spatial data in the integrated architecture based on Web GIS and improving the rendering performance by using Web caching has been widely performed. Recently Web GIS has been widely applied in various fields of social life and the integrated service architecture based on Web GIS has been implemented to help solve the problems arising in practice. In this paper, we propose an integrated service architecture that realizes the integration of different thematic Web GIS by using single map server based on a service-oriented spatial data infrastructure(SDI). We extend the multi-granularity spatial-temporal data access control (MSTAC) model to propose an access control model of spatial data according to business systems. We also propose and implement a web caching model to enhance the performance of spatial data service. The experimental results show that our method can reduce the request-response time of spatial data service and preserve the rendering of map at a constant rate.