- From: Brian Pane <brianp@brianp.net>
- Date: Sun, 26 Jun 2011 05:44:21 -0700
- To: httpbis Group <ietf-http-wg@w3.org>
On Sun, Jun 26, 2011 at 1:19 AM, Poul-Henning Kamp <phk@phk.freebsd.dk> wrote: > In message <A2439359-80C0-466D-9E1A-7A9316F9FBD0@mnot.net>, Mark Nottingham writes: > >>1.4.x Delta Seconds >> >>The delta-seconds rule specifies a non-negative integer, representing = >>time in seconds. > > Some high volume sites cache content for only a couple of seconds, > but derive 20-30% cache hit ratios from it. For these sites the > 1 second granularity of age related values are a serious limitation > on caching policy. > > Does anybody know of anything that would break if we allowed real > numbers for these fields ? > > ie: > delta-seconds = 1*DIGIT [ '.' *DIGIT] > I fear that changing the grammar in HTTP/1.1 would break a lot of caching intermediaries. Thinking ahead to future HTTP versions, though, it seems reasonable to allow fractional seconds. -Brian
Received on Sunday, 26 June 2011 12:45:08 UTC