面向GISCloud的网络拓扑研究

GISCloud是建立在云计算基础上的GIS系统,能够高效地进行数据管理并为用户提供稳定可靠的GIS服务。GISCloud以海量的地理空间信息数据作为基础,通过云计算来进行海量数据的处理。针对GISCloud的数据存储和访问需要,提出了区域化网络拓扑结构:云由多个区域化后的子网构成,无网络中心;子网内采用区域子网中心节点来进行管理,并可进行扩展。区域化网络拓扑以GIS数据特征及其交换方式等为核心将分布式拓扑结构与集中式拓扑结构结合在一起,从而构建出高效稳定可靠的GISCloud基础网络。

Research on Network Topology Based on GISCloud

GISCloud is established on the basis of cloud computing. This GIS system can manage GIS data with high efficiency and provide stable and reliable GIS service to the users. GISCloud has vast amounts of geographic information as the basic data content and manages the data through cloud computing. Regional network topology was proposed in this paper to meet the requirements of data storage and access. Cloud was consists of multiple regional sub-networks without network centric servers. Regional centric nodes were adopted for management in the corresponding regional sub-networks which could be extended. Such topology has advantages of both distributed topology and centralized topology based on the characteristics of GIS data and their exchange and it can provide basic network structure to GISCloud with high efficiency, reliability and stability.