- From: Koen Holtman <koen@win.tue.nl>
- Date: Thu, 11 Apr 1996 13:32:39 +0200 (MET DST)
- To: masinter@parc.xerox.com (Larry Masinter)
- Cc: paulle@microsoft.com, mogul@pa.dec.com, http-caching@pa.dec.com
Larry Masinter: > >Is there no useful meaning to max-age=0 other than "must-validate"? The difference between "max-age=0" and "must-revalidate" for caches that play by the transparency rules is that, if revalidation fails because of network failure: - with "max-age=0", you return a stale 200 (OK) response with a warning header attached - with "must-revalidate", you return a 5xx error response So must-revalidate is more than just "really really max-age=0". Speaking in road-sign metaphors, "max-age=0" means "speed limit 50 Km/h", while "must-revalidate" means "WARNING: sharp turn: safe maximal speed 50 Km/h". If you ignore the first, you only sin against community standards. If you ignore the second, you end up upside down besides the road. Koen.
Received on Thursday, 11 April 1996 12:05:32 UTC