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Digital Libraries: Technology and Management of Indigenous Knowledge for Global Access

Volume 2911 of the series Lecture Notes in Computer Science pp 639-642

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

  • Qinghu LiAffiliated withSchool of Software, Tsinghua University
  • , Jianmin WangAffiliated withSchool of Software, Tsinghua University
  • , Kwok Yan LamAffiliated withSchool of Software, Tsinghua University
  • , Jiaguang SunAffiliated withSchool of Software, Tsinghua University

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Abstract

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.