数据网格中一种基于滑动窗口的副本创建和替换策略  

STRATEGY OF REPLICA CREATION AND REPLACEMENT IN DATA GRID BASED ON SLIP WINDOW

作　　者：王驰[1] 施亮[1] 

机构地区：[1]上海交通大学自动化系,上海200240

出　　处：《计算机应用与软件》2008年第6期38-39,43,共3页Computer Applications and Software

基　　金：国家自然科学基金(70501021)资助

摘　　要：数据网格中,数据副本技术提高了数据的访问速度,减少了带宽的消耗。副本创建策略是数据副本研究中的重要问题之一。提出了在P2P网络环境下,一种基于滑动窗口技术的副本创建和替换策略。使用传输时间比作为副本创建和替换的依据。分析和模拟显示,该方法能在控制访问空间的同时,获得良好的性能。In data grid, technique of data replication increases the speed of data accessing and reduces the consumption of bandwidth. Replica creation strategy is one of the most important issues in research of data replication. A strategy of replica creation and replacement in P2P environment is proposed, which is based on slip window technique. The ratio of time for data transfer is identified as the criterion of replica creation and replacement. As the analyses and simulation show, this method leads to the control of storage size of replica with good performance.

关 键 词：数据网格 副本创建 副本替换 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术] TP311.132[自动化与计算机技术—计算机科学与技术]