A Replication and Cache Based Distributed Metadata Management System for Data Grid

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.