全国林地“一张图”高性能地图瓦片服务技术研究  

Study on high performance tile map service technology for national forest “One Map”

作　　者：罗鹏[1] 许等平[2] 任怡[2] LUO Peng;XU Dengping;REN Yi(Research Institute of Forest Resource Information Techniques, CAF, Beijing 100091, China;Academy of Forest Inventory and Planning, State Forestry Administration, Beijing 100714, China)

机构地区：[1]中国林业科学研究院资源信息研究所,北京100091 [2]国家林业局调查规划设计院,北京100714

出　　处：《中南林业科技大学学报》2018年第7期26-31,共6页Journal of Central South University of Forestry & Technology

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(IFRIT201502);国家林业局森林资源管理司指令性项目"全国林地数据库汇总更新;系统(工具)升级维护"(2016-2-12)

摘　　要：受限于传统磁盘的I/O读写速度与网络的性能的影响,地图浏览的效率和可用性难以得到保障。根据林地落界数据的管理与应用特点结合Web端二三维一体化应用需求,从专题地图瓦片生产、组织、管理、服务等几个方面出发,设计实现一种基于面向服务的体系结构(service-oriented architecture,SOA)的多层次缓存瓦片地图数据服务方案。结果表明:通过瓦片缓存服务的层次化和横向负载均衡,在分散了磁盘IO压力的同时亦提高了服务的可用性;所构建的方案与原型系统有效地解决了林地"一张图"地图服务需求,为构建高性能的国家级林地"一张图"政务地图服务提供了有力的技术支撑。Limited by traditional disk IO and network performance, the efficiency and availability of map browsing is difficult to be guaranteed. In this study, a novel method-service-oriented architecture（SOA） integrating tile caching services hierarchical and horizontal load balancing was proposed to improve efficiency and availability for map browsing. This method included thematic map tile production, organization, management, service and so on. It not only decentralized the disk IO pressure but also increased the availability of services through tile caching service, which provided a strong support for building high-performance national forest ＂one map＂service based on the national forest land database.

关 键 词：网络地理信息系统 林地“一张图” 分布式瓦片地图服务 负载均衡 

分 类 号：S771.8[农业科学—森林工程]