Replacement Policies for a Distributed Object Caching Service

  • Authors:
  • Hilla Atzmon;Roy Friedman;Roman Vitenberg

  • Affiliations:
  • -;-;-

  • Venue:
  • On the Move to Meaningful Internet Systems, 2002 - DOA/CoopIS/ODBASE 2002 Confederated International Conferences DOA, CoopIS and ODBASE 2002
  • Year:
  • 2002

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Abstract

This paper investigates replacement policies for an object caching service. The replacement policies studied include several previously known schemes, as well as a couple of new schemes that take into account the hierarchical structure of the caching service. Three metrics are used in comparing the replacement policies: cache hit rate - the percentage of requests that were answered from the cache, byte hit rate - the percentage of bytes in replies that were answered from the cache, and access time - average time a client request has to wait for the corresponding reply. Also, unlike most works on cache replacement, this work examines the behavior of the entire system, rather than looking at a single cache at a time.