一种适应性复制协议的研究与设计  

Research and Design of an Adaptable Replication Protocol

作　　者：赵东[1] 姚绍文[1,2] 周明天 

机构地区：[1]电子科技大学计算机科学与工程学院 [2]云南大学信息学院,云南昆明650091

出　　处：《电子学报》2002年第12A期1991-1994,共4页Acta Electronica Sinica

基　　金：国家高技术研究发展计划项目(No.863-301-7-9);四川省重点科技攻关项目(No.SG95.17.1)

摘　　要：传统的复制协议往往对如何适应遗留系统和引入复制技术对系统性能造成的影响方面考虑不够深入.本文在分析传统复制协议的基础上,提出了一种新协议.其设计采用复制实例数目可动态伸缩的逻辑令牌环结构,因而在满足可用性需求的前提下,可支持不同分布系统对适应性的需求,同时保证引入复制技术后系统的性能.文中详细论述了相应的系统模型和服务请求的处理,并通过与几种典型的传统复制协议的比较,证明了该协议的可行性.Traditional replication protocols don't take those issues into consideration such as adaptation to legacy system as well as affection to the system performance after introducing replication. Based on discussion about these protocols, a new replication protocol is addressed in this paper. Its design adopts logical token ring architecture with dynamically increasing/decreasing replicas. This paper discusses the system model and the request processing procedure of the protocol. With precondition to meet availability requirement, it not only enables adaptability to various distributed systems but also guarantees high performance of these systems. The comparison between this protocol and other typical replication protocols shows that it is feasible.

关 键 词：适应性 可用性 ROWC 性能测试 复制协议 

分 类 号：TN915.04[电子电信—通信与信息系统]