基于对象存储文件系统的协作式缓存一致性策略  

Collaborative cache consistency strategy based on object-based storage file system

作　　者：蒋溢[1] 姜军君[1] 熊安萍[1] 

机构地区：[1]重庆邮电大学计算机科学与技术学院,重庆400065

出　　处：《计算机工程与设计》2012年第11期4204-4208,4299,共6页Computer Engineering and Design

摘　　要：基于对象存储文件系统引入了客户端缓存机制以加快文件访问速度,由此也带来了缓存数据一致性问题。针对多客户端访问共享文件时缓存更新策略存在的延时、网络和服务器负载过大及网络消耗大等问题,基于Lustre对象存储文件系统实现了一种改进的协作式缓存一致性策略。实验结果表明,改进后的缓存更新策略,不仅可以保证缓存数据的一致性,而且减少了客户端与服务器交互次数,降低了访问延迟,提高了系统I/O性能。To speed up file access speed, object-based storage file system introduces the client caching mechanism, which also brought the problem of the cached data consistency. When multi-clients try to access to shared files, given the delay, heavy load of network and server, too much network consumption and other issues of cache update strategy, object-based storage Lustre file system achieved an improved collaborative cache coherency strategy. The experimental results show that improved cache update strategy not only can guarantee the consistency of cached data but also reduce interactions between client and server, and the access latency and the system I/O performance is improved.

关 键 词：对象存储 缓存 一致性 协作 更新 

分 类 号：TP316.4[自动化与计算机技术—计算机软件与理论]