电子学报 ›› 2005, Vol. 33 ›› Issue (7): 1275-1278.

• 论文 • 上一篇    下一篇

协同编辑中的迟加入问题和协作可靠性

窦万峰1,2, 王维丽1,2   

  1. 1. 南京师范大学数学与计算机科学学院,江苏南京 210097;2. 南京大学计算机软件新技术国家重点实验室,江苏南京 210093
  • 收稿日期:2004-11-30 修回日期:2005-03-20 出版日期:2005-07-25 发布日期:2005-07-25

Problem of Late Join and Cooperation Reliability in Real-Time Cooperative Editing Systems

DOU Wan-feng1,2, WANG Wei-li1,2   

  1. 1. College of Mathematics and Computer Science,Nanjing Normal University,Nanjing,Jiangsu 210097,China;2. State Key Laboratory of Novel Software Technology,Nanjing University,Nanjing,Jiangsu 210093,China
  • Received:2004-11-30 Revised:2005-03-20 Online:2005-07-25 Published:2005-07-25

摘要: 实时协同编辑中协作站点在不同时机加入时,由于网络延时或故障会导致其初始状态的不一致,即同步问题.同时,协作过程中站点或网络故障或长时间无操作生成,以及会话管理器的容错等问题会影响系统可靠性.本文提出一个多迟加入server算法,解决了迟加入client初始状态的一致性;提出一种基于会话管理器的站点查询算法和分布式备份模型,保证系统可靠协作.通过实例对相关算法的有效性进行了验证.

关键词: CSCW, 协同编辑系统, 迟加入, 会话管理器, 分布式备份模型

Abstract: Due to the network prolonging or fault,inconsistency or synchronous problem of the initial state of cooperative sites occurs when they join a real-time cooperative editing system at different time.Furthermore,the fault of cooperative sites or network,or long time no operations in cooperative sites,and the fault-tolerant of session manager can affect reliability of the system.A multiple late-join server algorithm is presented.The algorithm can effectively solve the consistency of the initial state of the late-join client.A query algorithm and distributed backup model based on session manager are proposed to guarantee the reliability of cooperative editing systems.The effectiveness of relative algorithms is verified by a concrete example.

Key words: CSCW, cooperation editing system, late-join, session manager, distributed backup model

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