摘要： 为了解决数据网格中数据一致性的问题，文章提出了一个一致性模型，引入了一 致性服务的概念，并对一致性服务应当支持的复制策略进行了探讨，介绍了一致性服务的具 体内容，包括复制协议、复制标准选择和它的临界条件，给出了在不同条件下一致性服务的 解决方案。所描述的复制策略、复制选择方案构成了一致性服务的基础框架。

关键词: 数据网格, 复制目录, 一致性服务, 读锁定, 脏读

Abstract: In order to solve the data consistency problem, this paper introduce s a consistency model. It presents the concept of consistency service and discus ses replicate strategy in consistency service, the content of consistency servic e, such as replication protocol, replicate selection, and various critical condi tions, different solutions for consistency service under different conditions. R eplication strategies and selections proposed in this paper build up the infrast ructure of consistency service.

中图分类号: 

• TP393.09