一种基于域的副本管理策略

A Strategy of Replica Management Based on Domain

结合分布式文件系统的实际应用,以系统平衡度和节点的访问效率为依据,提出了一种基于域的副本管理策略。为节点建立缓存,访问时,优先访问本域中副本,其次访问邻域中副本,减少了访问开销。域管理者实时计算并维护系统平衡度,动态增删副本。采用这两种方式,能优化系统整体性能,实现方便快捷的副本访问方案。

Combined with the practical application of the distributed file system,according to the balance of system and accessing efficiency of nodes,pointed out a strategy of replica management based on domain,establishing a cache for the node.When accessing a node,the replica stored in its domain was accessed firstly,and then the replica of neighborhood of current node was accessed.In this way,the access cost was reduced.Domain manager kept the balance of system by calculating,and then adding and deleting replica dynamically.These two methods can optimize the performance of overall system,to achieve fast and convenient access to the replica.