空间数据服务效率优化策略  

Research on Efficiency Improving for Spatial Data Service

作　　者：王连备 范永弘[1] 贲进[1] 

机构地区：[1]信息工程大学测绘学院,河南郑州450052

出　　处：《地理空间信息》2011年第2期32-34,37,共4页Geospatial Information

基　　金：国家863计划资助项目(2009AA12Z218)

摘　　要：分析了空间数据服务的特点和现状,探讨了提高数据传输效率的技术途径,提出了基于GridFTP集群的空间数据服务效率优化策略,设计了基于动态数据分块和服务性能加权的负载均衡算法并开展了相关实验。实验结果表明,提出的优化策略是可行、有效的,能够显著的改善大数据量空间数据集的传输效率。Based on the present situation and characteristic of spatial data service technologies,technological approaches for efficiency improving were discussed in this paper.The efficiency improving strategy was presented based on Grid FTP Services.A load balancing algorithms which distributed data block onto nodes in data service cluster according to their current performance was designed and applied on spatial data service experiment.The result demonstrated that the efficiency improving strategy presented in this paper can improve the efficiency of data distributing.

关 键 词：空间数据 数据服务 传输效率 负载均衡 GRIDFTP 

分 类 号：P208[天文地球—地图制图学与地理信息工程]