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Re: Improving If-Modified-Since

From: Lou Montulli <montulli@mozilla.com>
Date: Tue, 15 Aug 95 14:38:20 -0700
Message-Id: <303113CC.794B@mozilla.com>
To: hartill@lanl.gov
Cc: montulli@mozilla.com, fielding@beach.w3.org, http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
> Roy's point is that Netscape also sends IMS along with *all* cached requests.
> That's what's causing so many Netscape caches to get stuck with junk
> which the user cannot refresh, and the only solution is to clear your
> entire Netscape cache.
> "Pragma: no-cache" is not aimed at end servers (only proxies in between),
> so the end servers are always asked to respond "304 Not Modified".
> As Roy says, fix that and most of the problems will go away.

"fix" is an interresting choice of words.  "change" is more appropriate.
Not sending an "if-modified-since" header with reloads would be extremely
costly in terms of bandwidth.  Adding cache checksums is a much better 

Lou Montulli                 http://www.mcom.com/people/montulli/
       Netscape Communications Corp.
Received on Tuesday, 15 August 1995 14:52:43 UTC

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