Re: Why not use the guid? (was Re: Yahoo! News RSS Feeds Launched)
Dave Winer <dave@...
2003-08-27 01:23:52 GMT
Very cool. ;->
----- Original Message -----
From: "Mark Fletcher" <markf@...>
Sent: Tuesday, August 26, 2003 7:42 PM
Subject: Re: Why not use the guid? (was Re: [syndication] Yahoo! News RSS
> Dave Winer wrote:
> >They have a guid on each item -- why not use it?
> Of course we use the guid. That's our index (along with the site id)
> into the database for each item. It's also how we can tell that a
> particular item has been changed or edited. So we have cases where there
> are new items, when the guid doesn't appear in the database, and cases
> where items have been edited, because we go in and compare different
> fields of the item with what we fetched last time. We highlight the item
> in either case.
> So in this case, the guids were fine and we were able to fetch the
> previously-fetched items out of our database. We then compared the
> various parts of each item to our previously fetched info, like the
> description, title, and link. The links were different, so we considered
> the items to be updated, which we highlighted for our users.