- From: David Woolley <forums@david-woolley.me.uk>
- Date: Mon, 07 Jun 2010 08:27:01 +0100
- To: Merin Tresa Willy <merintwilly@gmail.com>
- CC: Aryeh Gregor <Simetrical+w3c@gmail.com>, asseerao@gmail.com, adam.delvecchio@go-techo.com, www-html@w3.org
Merin Tresa Willy wrote: > > What about dynamic HTML pages? Is there any mechanism for retrieving the > age of their contents? That's an authoring question, so even more off topic. The basic question was off topic, because this is a HTTP issue, so an IETF one, not a W3C one. Competently produced dynamic web content (not just HTML) has a dynamically generated Last-Modified header. Unfortunately most web administrators are lazy or don't understand the web server well enough. Also most content providers are not interested in providing accurate dates, and in particular are not interested in providing accurate cachability meta-data (they would simply prefer that the resource never be cached, because they do not value caching over the user predictably getting the very latest content). -- David Woolley Emails are not formal business letters, whatever businesses may want. RFC1855 says there should be an address here, but, in a world of spam, that is no longer good advice, as archive address hiding may not work.
Received on Monday, 7 June 2010 07:28:01 UTC