Abstract: The dynamic updating and replication of LDAP (light weight directory access protocol) directory tree would happen frequently for grid information system is distributed widely, highly fault-tolerant, dynamic and diversiform. To improve the system efficiency, this paper puts forward the strategy of caching plus cascading replication and fast spread. Compared with many other replication strategies and considered in different grid infrastructure, the strategy of caching plus cascading replication and fast spread can boost the efficiency of grid information service system that regards the distributed database of LDAP as the foundation.

Key words: Grid information services, Resource sharing, Dynamic replication

摘要： 网格信息系统的广泛分布，高容错性，动态多样性，使得网格信息服务的基础LDAP (Light weight Directory Access Protocol)目录信息树的动态刷新与复制频繁发生。为了提高网格信息服务的效率，该文提出了叠层加缓存和快速扩展的策略。针对网格不同的结构基础，通过与其它多种复制策略的比较试验，证实了该策略可大幅度提高以LDAP目录分布式数据库为基础的网格信息服务系统的效率。

关键词: 网格信息服务, 资源共享, 动态复制

CLC Number: 

• TP393