Aiming at the characteristics and draw backs of existing performance optimizing strategies under WebGIS cluster environment,this paper proposes a new WebGIS model based on high performance memory cache under cluster environment,w hich mainly focuses on the high performance memory cache architecture of WebGIS,the scalable high performance memory cache module and the workflow of memory cache,thus realizing the high performance memory cache under WebGIS cluster environment,and solving the I/O bottleneck problem in traditional WebGIS model.Finally,five frequently-used services are used in WebGIS to conduct the simulation experiment.The result shows that,compared with the traditional WebGIS cluster environment,the new model based on high performance memory cache designed in this paper can effectively improve the concurrent processing capability of WebGIS cluster,w hich has good scalability.%针对现有集群环境下网络空间信息服务性能优化策略的特点和弊端进行分析,提出集群环境下网络空间信息服务高性能内存缓存方法,重点研究网络空间信息服务高性能内存缓存体系结构、可扩展的高性能内存缓存控制设计、内存缓存工作流程,最终实现集群环境下基于内存缓存的网络空间信息服务的加速,解决传统WebGIS模型中存在的I/O瓶颈问题.最后,使用五个常用的网络空间信息服务类型对文中提出的方法进行实验,结果证明与传统的集群环境下网络空间信息服务相比,文中设计的网络空间信息服务高性能内存缓存方法能够有效地提升服务并发处理能力,具有良好的可扩展性.
展开▼
