Replication Strategies in Non-Uniform Membership Federated Data Grid Systems  

作　　者：JIANG Jianjin WANG Dingxing 

机构地区：[1]Department of Computer Science and Technology, Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Journal of Electronics》2008年第4期615-620,共6页电子学报（英文版）

基　　金：This work is supported by the National Natural Science Foundation of China （No.90412006, No.90412011, No.60573110, No.90612016, No.60673152）, National Key Basic Research Project of China （No.2004CB318000, No.2003CB317007）, and National High Technology Development Program of China （No.2006AA01A101, No.2006AA01A108, No.2006AA01Alll）.

摘　　要：Replica management is currently a major topic to data grid community. This paper first proposed a replication strategy model for federated data grid systems in which sub data grid is not equal-sized. Then, we investigated what is the optimal way to replicate data in non- uniform membership federated data grid, that is, system with storage constraints should make how many replicas for every data to minimize average access latency. Furthermore, we considered the impact of non-uniform membership on system performance. For a replication strategy, we built a mechanism to compare the performance between two data grids. The simulation results showed that the strategy proposed in this paper is superior to LRU strategy, uniform replication strategy, proportional replication strategy and square root replication strategy in wide area network bandwidth requirement and in average access latency of data.

关 键 词：Data grid Replication strategy Access latency Optimized distribution. 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]