Distributed WebGIS model based on server farm
The deficiencies of traditional WebGIS model were analyzed.From the points of load-balancing and map status synchronization,we proposed a new distributed model based on server farm.It used user-defined bottom interactive protocol,distributed dynamic balancing scheduling algorithm and map status object pool to solve many problems in the traditional model such as inefficient heterogeneous compatibility,weak parallel processing capability,and the difficulties in map status synchronization.A test-bed was established to verify the performance of the model.A series of test results has proved that the new WebGIS model has strong heterogeneous compatibility,parallel processing capability and faulttolerant features.Through the mechanism of map status synchronization,the new model can realize sustained preservation and synchronization of map operated statuses and meets the demands of users uninterrupted accesses.
WebGIS distributed server farm load-balancing heterogeneous compatibility parallel processing capability map status synchronization
Huang Ying Xie Zhong Guo Ming-qiang
Faculty of Information Engineering,China University of Geosciences,wuhan,China 430074;GIS Software and Application Research Center of Ministry of Education,wuhan,China 430074
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）