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On the sensitivity of Web proxy cache performance to workload characteristics

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2 Author(s)
Busari, M. ; Dept. of Comput. Sci., Saskatchewan Univ., Saskatoon, Sask., Canada ; Williamson, C.

This paper describes the design and use of a synthetic Web proxy workload generator (ProWGen) to investigate the sensitivity of proxy cache replacement policies to selected Web workload characteristics. Trace-driven simulations with synthetic workloads from ProWGen show the relative sensitivity of three popular cache replacement algorithms-LRU, LFU-aging and GD-size-to Zipf slope, temporal locality, and correlation (if any) between file size and popularity, and the relative insensitivity of these algorithms to one-timers and heavy tail index. Performance differences between the three policies are also highlighted

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INFOCOM 2001. Twentieth Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings. IEEE  (Volume:3 )

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