ISSN 1002-1027  CN 11-2952/G2

Acta scientiarum naturalium Universitatis Pekinensis

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IFOG: An Indexed-Cache Framework over Data-Grids

ZHANG Junhu1, YANG Dongqing, TANG Shiwei   

  • Received:2006-03-10 Online:2007-01-20 Published:2007-01-20

Abstract: The problems on the rapid replica location and consistent replica access on a data-grid were studied. By analyzing the associated issues on replica caching, cached replica tracing and replica adjacency perceiving in data-grids, the paper proposes a distributed "Indexed-Cache Framework Over Data-Grids" (IFOG) and accomplishes an algorithm of the rapid replica allocation and access. The experiment shows that IFOG is good at rapid allocation of near replicas, which greatly improves the efficiency of the Replica Location Service (RLS) on data-grids. The consistent replica access algorithm over IFOG can provide better replica access speed for data-grid applications without increasing the price of replica consistency maintenance.