On Sat, Jun 27, 1998 at 06:22:07AM -0400, Rich Sena wrote:
On Sat, 27 Jun 1998, Karl Denninger wrote:
As soon as that happens widely the cache is useless (or worse) and therefore people who use them have a reason to ignore the Expires headers.
Sure if "everything" on the site is tagged as dynamic or is pre-expired then what is the point of caching at all - but "everything" doesn't need to be for caching and hit-stats to coexist - just count your hits on one item, just leave those items that ABSOLUTELY must be dynamic be dynamic - and items that should be updated daily - should have the correct expires date set - so that IMS can work to their advantage.
That doesn't work, since the meta-tag is on the PAGE, not the element (which technically doesn't exist and is a figment of the server's imagination) Therefore, any page which has a non-cacheable element (ie: an ad or time-sensitive data) must be marked non-cachable. Congratulations - you just specified that any shtml or asp page must be marked non-cachable, along with any time-sensitive or advertiser-sponsored page. If that actually happens, then the proxy server operators will start shutting off recognition of the headers, and now we're right back where we started, along with the performance problems that this causes (forcing the traffic through a proxy server for EACH access actually HURTS performance, not helps it). -- -- Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost