数据网格中一种基于副本和缓存的元数据管理系统
A Replication and Cache Based Distributed Metadata Management System for Data Grid
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摘要: 元数据管理是数据网格的关键技术之一 对全局分布式存储系统GDSS(globaldistributedstoragesystem)中的元数据管理进行了改进 ,提出了一种基于副本和缓存的分布式元数据管理系统RCMMS(replicationandcachebaseddis tributedmetadatamanagementsystem) ,缓存设置在GDSS系统中的存储服务点SSP(storageservicepoint)端 还讨论了RCMMS的设计、实现以及测试 RCMMS提供了动态管理元数据副本的有效算法 分析和测试表明 ,副本结合缓存的元数据管理方案在性能上超过了GDSS现有的元数据管理系统 ,有着较好的可靠性Abstract: Metadata management is a key technique of data grid.In this paper a replication and cache based metadata management system （RCMMS） is presented to improve metadata management of a global distributed storage system （GDSS）.Storage Service Provider （SSP） of GDSS has dedicated buffer to cache metadata.The design, implementation, and evaluation of RCMMS are discussed.RCMMS provides efficient algorithms to manage highly dynamic metadata replicas.The evaluation demonstrates that the replica plus cache metadata management system outperforms the existing metadata management system of GDSS and has good reliability.
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