一种应用于网络硬盘存储系统的一致性协议  

A consistency protocol applied to online storage system

作　　者：刘青昆[1] 石彦博[1] 梁莹[1] 

机构地区：[1]辽宁师范大学计算机与信息技术学院,辽宁大连116081

出　　处：《微型机与应用》2013年第14期72-74,78,共4页Microcomputer & Its Applications

摘　　要：通常网络硬盘系统会向用户提供高可用性和低延迟的网络服务,并且通过对不同程度上的一致性进行选取,从而寻找可用性、低延迟与一致性这三者的平衡。高一致性意味着系统将会牺牲掉一定的可用性,但低一致性会增加程序设计的难度。为一款网络硬盘系统设计一种一致性协议,使得该网盘可以高效地处理用户对共享目录或文件的移动、删除和重命名等操作,与此同时还能确保共享目录及文件在各个客户端中不会有混乱无序的情况出现。Usually, the online systems promise high availability and low latency, and they provide different degrees of consistency to find the trade - off between availability , low latency and consistency . High consistency usually means the systems will sacrifice the availability , but low consistency can bring difficulty to the programmer . In this paper , we present a new consistency protocol for a online storage system , which can let it deal with the openration of move delete and rename on the sharing catalogue and file efficiently . At the same time , this protocol can guarantee the catalogue and file on the client will not end in chaos .

关 键 词：网络硬盘存储系统 一致性协议 可用性 可扩展性 

分 类 号：TP302.7[自动化与计算机技术—计算机系统结构]