网格环境下的数据副本一致性维护解决方案

Scheme of Replica Consistency Maintaining in Grid Environments

副本技术是网格中提高数据访问和处理效率的关键技术。针对目前副本管理存在的局限性和亟待解决的一致性维护关键问题，以Globus提供的副本技术为基础，从副本创建与更新的角度出发，采用日志管理思想，提出了一种副本创建与一致性维护相结合的解决方案。

Replica is the one of the most important key technique in grid. It can improve the efficiency of data access and processing. In view of the limits and key issues to be resolved in current researches about Replica, from replica creation and update, based on the Globus toolkit and by the idea of log management, this paper gives a realization scheme which integrating replicas creation and maintaining consistency.