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Re: Ordered 'opqque' validators

From: Zheng Wang <Z.Wang@cs.ucl.ac.uk>
Date: Wed, 07 Feb 1996 11:51:38 +0000
To: Luigi Rizzo <luigi@labinfo.iet.unipi.it>
Cc: http-caching@pa.dec.com
Message-Id: <7757.823693898@cs.ucl.ac.uk>

 >There is a theorem in statistics which says that the the combination of
 >large numbers of random variables yields to a gaussian distribution,
 >independently of the distribution of each single variable. Similarly,
 >when we have a national or continental cache, I expect the number of users
 >to be so large to make differences disappear and make the aggregate
 >result almost the same everywhere.

A number of studies suggested a cache hit rate of 30-50% and
the results seem to be very consistent. See the paper
by Marc Abrams et al "Caching Proxies: Limitations and
Potentials" in proceedings of WWW4 for references.

Received on Wednesday, 7 February 1996 12:06:34 UTC

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