CSCW中的对象同步与合并

为了满足响应时间以及可靠性的要求,协同应用通常采用全复制的体系结构．由此带来的一个巨大挑战就是如何保证复制在各个协作站点处的对象的一致性以及获得一个公共状态,总结了在线和离线两种协作模式下的不同需求,在此基础上给出了相应的控制机制——在线模式下的对象同步算法和离线模式下的对象合并算法．这些机制已经在协作支撑平台Cova系统中实现,实际的应用表明,这些措施与其他机制一起能够很好地满足协同应用数据一致性的要求。

Object Synchronization and Merging in CSCW

To meet the needs of short response time as well as the reliability, cooperative applications usually adopt fully replicated architecture In such systems, many users manipulate the same object at different sites online or offline Usually these objects are called replicas and it is a great challenge to keep the consistency of these replicas and obtain a common state at last To solve this problem, various requirements of online and offline cooperation are analyzed first and then the corresponding control mechanisms, i e , a synchronization algorithm for online mode and an object merging algorithm for offline mode, are proposed based on the results The mechanisms have been implemented in a general cooperation support platform named Cova Real world practice shows that when applied with other mechanisms, the two algorithms can meet the data consistency needs of cooperative applications very well