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计算机工程 ›› 2009, Vol. 35 ›› Issue (4): 10-12. doi: 10.3969/j.issn.1000-3428.2009.04.004

• 博士论文 • 上一篇    下一篇

有效的WebGIS地图服务器场负载均衡算法

黄 颖1,2,谢 忠1,2,郭明强1,2   

  1. (1. 中国地质大学信息工程学院,武汉 430074;2. 教育部GIS软件与应用工程研究中心,武汉 430074)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-02-20 发布日期:2009-02-20

Effective Load-balancing Algorithm for WebGIS Based on Map Server Farm

HUANG Ying1,2, XIE Zhong1,2, GUO Ming-qiang1,2   

  1. (1. Faculty of Information & Engineering, China University of Geosciences, Wuhan 430074;2. GIS Software and Application Project Research Center of the Educational Department, Wuhan 430074)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-02-20 Published:2009-02-20

摘要: 针对现有网络地理信息系统(WebGIS)负载均衡技术的缺陷,分析利用集群技术解决WebGIS负载均衡的必要性和可行性,提出基于地图服务器场的WebGIS分布式负载均衡模型,研究地图服务器场分布式动态均衡调度算法,建立试验床,通过一系列的试验结果验证了该算法良好的全局网络负载性。

关键词: 网络地理信息系统, 地图服务器场, 负载均衡

Abstract: Aiming at deficiencies of load-balancing technology in the existing WebGIS, the paper analyzes the necessity and feasibility of cluster technology and proposes a new distributed load-balancing model based on map server farm to improve WebGIS performance. The algorithm, named distributed dynamic load-balancing scheduling algorithm, is researched as the core component in the model. A test-bed is established. A series of test results prove that the algorithm has good global load balancing performance.

Key words: WebGIS, map server farm, load-balancing

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