RSS 3? Eh? The RSS ttl element is a mess. RSS 3 Lite (could we spell that word correctly?) specifies it not as information about the feed, but as an attempt to remotely control robots. RSS 2 specifies it as a caching hint, but in minutes, not seconds.
Regardless it is useless for a feed with a dedicated update schedule, because it requires updating the feed every second (or minute) as the publish time approaches. For more detail, see: <http://www.intertwingly.net/wiki/pie/PaceCaching> That was a proposal, and is *not* part of Atom, but it does have some useful discussion of cache hints. For caching, use the native HTTP cache features. wunder --On August 18, 2005 2:20:21 PM -0400 Elias Torres <[EMAIL PROTECTED]> wrote: > > I tried commenting on your site, but I have to register to comment. :-( > > You linked to RSS3 [1] and I spotted something related to this > extension that could be used instead. > > <ttl span="days">7</ttl> > > It seems more elegant than having to convert to whatever you specified > in your spec. > > Just a thought. > > Elias > > > [1] http://www.rss3.org/rss3lite.html > > On 8/17/05, James M Snell <[EMAIL PROTECTED]> wrote: >> >> http://www.ietf.org/internet-drafts/draft-snell-atompub-feed-expires-00.txt >> >> Example: >> >> <entry> >> ... >> <t:expires xmlns:t="...">2005-08-16T12:00:00Z</t:expires> >> ... >> </entry> >> >> or >> >> <entry> >> ... >> <updated>2005-08-16T12:00:00Z</updated> >> <t:max-age>20000</t:max-age> >> ... >> </entry> >> >> This is not to be used for caching of Atom documents; nor is it to be >> used as a mechanism for scheduling updates of local copies of Atom >> documents. >> >> - James >> >> > > -- Walter Underwood Principal Software Architect, Verity
