On Wed, Mar 19, 2008 at 5:33 AM, rcade <cadenhead@...> wrote:
> --- In aggregators@yahoogroups.com, "tsidhuus" <tsidhuus@...> wrote:
> > We need to build a RSS reader in our application. I wanted to
> > understand when I query a RSS feed do I get entries from the beginning
> > of time that RSS feed was created.
>
> When you request a feed, you usually get from 10-15 of the most recent
> items from that publisher. Although there's no prohibition against
> including more items (or going back forever), I'm not aware of any
> publisher doing that. The bandwidth hit would be huge.
>

The difficulty is that there is no prescribed mechanism in RSS itself
for what should be returned, or how to query it. RSS is just a format.

However, there is increasing use of OpenSearch for doing things like
pagination in feeds, and then including OpenSearch-Time for a
mechanism feed services can allow readers/developers to specify time
spans, and then page through the results.