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Proof for effective and efficient web caching

Proof for effective and efficient web caching

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Perfect-LFU, the optimal replacement policy for Web caches, achieves high performance (cache hit-rate) exploiting Zipf's law, but is very expensive to implement. It is proved that an alternative policy, called Window-LFU, achieves equivalent performance at a significantly lower cost.

References

    1. 1)
      • Serpanos, D.N., Karakostas, G., Wolf, W.H.: `Effective caching of Web objects using Zipf's law', Proceedings of IEEE international conference on multimedia and expo (ICME 2000), 30 July–2 August 2000.
    2. 2)
      • Serpanos, D.N., Wolf, W.H.: `Caching web objects using Zipf's law', Proceedings of SPIE, Photonics East, Technical Conf. 3527: Multimedia Storage and Archiving Systems III, 2–4 November 1998, Boston, MA, USA, 3527.
    3. 3)
      • Karakostas, G., Serpanos, D.N.: `Practical LFU implementation for Web caching', Technical report TR-622-00, Dept. of Computer Science, Princeton University, June 2000.
    4. 4)
      • N. Alon , J. Spencer , P. Erdos . (1992) The probabilistic method.
    5. 5)
      • Breslau, L., Cao, P., Fan, L., Phillips, G., Shenker, S.: `Web caching and Zipf-like distributions: evidence and implications', Proceedings of Infocom'99, 1999.
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