摘要
随着开放式GIS的发展,基于WMS服务来集成异构空间数据技术日渐广泛。为了提高WMS服务的效率,有效地减轻WebGIS服务器的负载,本文分析了传统的缓存策略和当前流行的地图瓦片缓存策略,剖析了开源的缓存工具Tile-Cache的基本原理和切片索引机制,并基于TileCache进行应用开发。实验表明经过缓存后的WMS服务速度明显示提高。
With the development of open GIS, WMS-based services to integrate heterogeneous spatial data is becoming more and more popular. In order to improve the efficiency of the WMS service and to reduce WebGIS server load effectively, this article analyzes the traditional caching strategy and the currently popular map tile cache strategy, as well as the basic principles and the indexing mechanism of the open tool TileCache. Then, applying and developing based on TileCaehe, experiments show that the cache speed of WMS service improves obviously.
出处
《计算机与现代化》
2009年第5期5-8,共4页
Computer and Modernization
基金
国家自然科学基金资助项目(60403043)
