GridFS: A Web-Based Data Grid with P2P Concepts and Writable Replicas

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We merge concepts from P2P into Data Grid and present a web-based Data Grid, called GridFS, for the distributed sharing of educational resources. GridFS extends Data Grid by making replicas writable in practice. We propose a push-version-number consistency (PVNC) model and a writer/reader protocol to implement it. PVNC eliminates nearly all read latency and lessens the network utilization. We believe GridFS and PVNC would benefit hierarchical web cache systems and digital libraries.

Supported by the Ministry of Education P.R.C under contract 2001BA101A12-02 and the National Key Basic Research and Development Program of China (973 Program) under Grant No.2002CB312006.