【摘要】 分析了利用集群技术解决网络地理信息服务负载问题的必要性和可行性,提出了基于集群技术的WebGIS服务器场模型,着重研究了面向地图内容的自适应动态反馈负载平衡算法,最后建立了试验床,对基于该算法的平衡负载器进行了验证。更多还原

【Abstract】 This paper analyzes the characteristic of state-of-the-art WebGIS system,proposes a model based on cluster technology for improving system performance.The algorithm,named adaptive map-based request distribution(AMBRD),is used as the core component of load-balancer considering the factor of general loads index feed back from GIS server nodes.A test-bed is established to verify the algorithm’s practicality.更多还原