基于多层架构的WebGIS瓦片加载模式

A Multi-layered Architecture of WebGIS Map Tile Loading Mode

论文探讨了WebGIS应用中瓦片地图的加载方式,提出了一种地图加载的方法,该方法能解决传统加载方法存在的地图浏览时边缘白边,服务器负载大等问题。该方法综合内存LRU调用算法、浏览器缓存机制和异步调用技术,是一种多层架构模式的优化方法,并给出了该架构模式的实现策略与步骤,为封装功能更强、用户体验更好的WebGIS组件提供了技术理论依据。

This paper discusses a tiled map loading method of WebGIS,puts forward a method of maps loaded,which can solve the problems,such as White border edge of map,and server load large when loading tiled map using the browser.This method is an optimizing method of multi-tier architecture model,that has integrated memory LRU algorithm,the browser cache mechanism and asynchronous.Giving the steps of the implementation strategy provides a good theoretical basis for packaging more powerful function,better user experience WebGIS technology component.