Taxonomy and Design Analysis for Distributed Web Caching

  • Authors:
  • Sandra G. Dykes;Clinton L. Jeffery;Samir Das

  • Affiliations:
  • -;-;-

  • Venue:
  • HICSS '99 Proceedings of the Thirty-second Annual Hawaii International Conference on System Sciences-Volume 8 - Volume 8
  • Year:
  • 1999

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Abstract

This paper proposes a taxonomy for distributed network caches based upon discovery, dissemination, and delivery methods. We analyze the match be- tween taxonomy categories and Web workloads, and classify current Web caching projects. Next, we describe a cooperative cache design known as server-directed proxy sharing (SDP). In SDP, proxy servers _nd cached copies by looking in local metadata directories. This speeds discovery and separates it from site selection, allowing proxies to pick sites using vari- ous criteria. Metadata is propagated by lazy prefetching, which piggybacks information about popular or related objects onto returned documents. An- alytical simulation indicates SDP substantially reduces server load and con- nection denials as compared to standard proxy server caching.