WebGIS地图图片缓存技术研究

Research of map tile data buffer policy based on WebGIS

提出并实现了基于嵌入式数据库的地图图片缓存方案。对该方案所用地图切割、存储、清除、一致性维护等图片关键技术做了重点介绍。最后,通过实验对比分析了不同缓存方案在性能上的差异。

The paper presents and realizes a new map tile data buffer solution which based on the embedded database. The key technologies for the solution just like map division, saving, deletion, maintaining the data consistency just so on are introduced. At last the paper analyses the advantage of the solution compared with the other buffer policies.