Vary: ETag - RSS
Really Simple Syndication
Copyright 2003-4 Randy Charles Morin
<< Previous Main Next >>
Sun, 12 Sep 2004 20:14:09 GMT
Vary: ETag

Sam Ruby: The core idea is that, sites that are willing to trade a little CPU for a bandwidth savings, subsetting the feed that is returned on a GET based on the ETag that was provided on the request may make sense. 

Randy: Some more intelligentsia on "The Web doesn't scale blog thread."

Update: As Sam suggests, this protocol is complex. Let me add too complex. I have to wonder why you don't just make the lastModDate the ETag and return only results whose lastModDate is more current than the If-None-Match header? Seems to be some detail in the Vary: ETag that offers little gain. Again, I wouldn't implement this unless I had a really active and popular feed. Just wondering.

Reader Comments Subscribe
Type "339":
Top Articles
  1. Unblock MySpace
  2. MySpace
  3. FaceParty, the British MySpace
  4. and
  5. Blocking Facebook and MySpace
  1. Review of RSS Readers
  2. MySpace Layouts
  3. RSS Stock Ticker
  4. RSS Gets an Enema
  5. Google Reader rejects