W3C home > Mailing lists > Public > ietf-http-wg-old@w3.org > September to December 1996

Re: Confusion about Age: accuracy vs. safety

From: Jeffrey Mogul <mogul@pa.dec.com>
Date: Tue, 03 Sep 96 16:27:47 MDT
Message-Id: <9609032327.AA13908@acetes.pa.dec.com>
To: "Roy T. Fielding" <fielding@liege.ICS.UCI.EDU>
Cc: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
    I'm sorry, but this is incredible.  I demonstrated how the entire
    network of New Zealand (3.6 million people and the highest tech
    ratio of any nation) can be completely disabled by Jeff's
    "conservative algorithm".

Aside from the minor point that you have "demonstrated" no such
thing (since you almost certainly don't have sufficient data to
to quantify the amount of overestimation error would be introduced
by the algorithm in the spec, or to quantify the resultant number
of cache misses caused by errors of this magnitude), your argument
is based on a premise that you know to be false, because you insisted
on its falsity during the design of HTTP/1.1.  To wit: the spec
explicitly allows your caches to ignore the expiration times (because
you insisted on this) and, if so, it hardly matters what the Age is.

 -Jeff
Received on Tuesday, 3 September 1996 16:36:48 EDT

This archive was generated by hypermail pre-2.1.9 : Wednesday, 24 September 2003 06:32:13 EDT