远程数据复制系统的日志保护机制研究

Research on Log Protection Machanism of Remote Data Replication System

摘要: 提出了一种减少日志溢出的DCM方法,论述了它的原理及实现算法.该方法在远程数据复制系统中得到了实现,在维护系统的高可用性的同时,减少了日志溢出的次数,降低了日志在发生溢出时对系统性能的影响,并且可以控制系统的数据相位差.

Abstract: In this paper, a DCM method with its principle and algorithm is introduced to handle the problem of log volume overflow. It is proved that this method performs effectively in the system. At the same time of maintaining the high availability of the system, disruptions on system performance is reduced when log volume overflow happens and the data phase difference is projected to be controlled under the mechanism.