基于Cache的Web信息集成系统的体系结构

Architecture of Web Information Integration System Based on Cache

数据仓库方法和虚拟方法是建立Web信息集成系统的两种基本方法,本文结合这两种方法的优点,以Wrapper/Medi-ator结构为基础,在用户和协调器之间增加一个数据缓存Cache,并由此提出一种Wrapper/Mediator/Cache体系结构.通过实验的验证,这种新的体系结构在解决异地数据源规模比较大、数据更新不是很频繁、但查询效率要求比较高的情况下建立信息集成系统的问题上,显示出较为明显的优势.

Warehousing and virtual method are two kinds of basic methods to establish a Web Information Integration System. This paper presented a new Wrapper/Mediator/Cache architecture, which is a hybrid of warehousing and virtual method, and based on the Wrapper/Mediator architecture. We add a Cache into the Wrapper/Mediator architecture in order to improve the query efficiency. Wrapper/Mediator/Cache architecture shows obvious advantage in solving the problem of large-scaled data source and efficiently query.