Abstract: Most of current Database Management System(DBMS) provide a mater and slave asynchronous replication mechanism, when the master node fails, the whole system will breakdown, and the potential delay between mater and slave will causes data lose. This paper provides a write set based synchronous database replication model on the basis of group communication replication, which can solve the delay problem, and improve the availability and extendibility in distributed databases.

Key words: database synchronous replication, group communication, Database Management System(DBMS), write operations set

摘要： 现有数据库管理系统(DBMS)大多采用主从模式的异步复制机制，而主从模式中主节点失效将导致整个系统瘫痪，并且异步复制中潜在的同步延迟可能造成数据丢失。针对该问题，根据组通信同步复制机制，提出一种基于写操作集的数据库多主同步复制模型，能解决异步复制带来的延迟问题，并提高分布式DBMS系统的容错性和可扩展性。

关键词: 数据库同步复制, 组通信, 数据库管理系统, 写操作集

CLC Number: 

• TP301.6