摘要： 减小数据库事务中的写操作开销对于分布式数据库系统的性能而言很关键。该文提出了一种基于协同缓存技术的分布式数据库更新机制，通过在分布式数据库服务器节点物理内存之上构建全局协同缓冲池，并利用其缓存写入记录，减小了数据库事务中的磁盘访问开销，研究了基于协同缓存的分布式数据库更新机制与其在该机制下事务性能改进。

关键词: 分布式数据库事务, 基于协同缓存的分布式数据库更新机制, 协同缓冲池

Abstract: Cost reduction of write operation in database transaction is important in distributed database system design. The paper presents a new update mechanism, named cooperate cache-based distributed database update mechanism (CCDDU). It reduces disk access cost in database transaction by means of cooperative caching pool constructed with physical memory among the servers. This paper describes cooperate cache-based distributed database update mechanism, focusing on how the mechanism improves transaction performance and its availability.

Key words: Distributed database transaction, Cooperate cache-based distributed database update mechanism, Cooperate caching pool