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Web proxy caching: the devil is in the details
Citation key CDFGR-WPC-98
Author Caceres, Ramon and Douglis, Fred and Feldmann, Anja and Glass, Gideon and Rabinovich, Michael
Pages 11–15
Year 1998
ISSN 0163-5999
DOI http://dx.doi.org/10.1145/306225.306230
Address New York, NY, USA
Journal ACM SIGMETRICS Performance Evaluation Review
Volume 26
Number 3
Publisher ACM Press
Abstract Much work in the analysis of proxy caching has focused on high-level metrics such as hit rates, and has approximated actual reference patterns by ignoring exceptional cases such as connection aborts. Several of these low-level details have a strong impact on performance, particularly in heterogeneous bandwidth environments such as modem pools connected to faster networks. Trace-driven simulation of the modem pool of a large ISP suggests that ''cookies'' dramatically affect the cachability of resources; wasted bandwidth due to aborted connections can more than offset the savings from cached documents; and using a proxy to keep from repeatedly opening new TCP connections can reduce latency more than simply caching data.
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