一种适应WAN的新型分层缓存管理机制

A Novel Hierarchical Cache Consistence Mechanism for WAN

提出了一种新型的分层Cache管理机制。该机制是针对WAN环境中大型分布式文件系统设计,完全适应在WAN中工作。HCMM使用分层的方法来管理WAN中的Cache,可以有效地减少WAN上的网络通信开销和服务器上管理Cache的开销,从而提高WAN中分布式文件系统的性能。建立了HCMM的理论分析模型,并和单层Cache管理机制进行了性能对比,结果表明,HCMM在WAN环境中比单层Cache管理机制的性能更好。

This paper presents a novel hierarchical cache consistence mechanismHCMM. HCMM is specially designed for the large scale distributed file system in WAN and can well adapt to work in WAN. HCMM uses hierarchical method to manage the consistence of cache, and can minimize the overhead of network communication and cache management. This paper also sets up a theory model to analyze the performance of HCMM. The results of theory analysis prove that the performance of HCMM is better than conventional cache consistence mechanism.