The updates firehose

[seth vidal]

On Sun, 2007-06-10 at 13:25 +0300, Jonathan Dieter wrote:
> On Sun, 2007-06-10 at 11:54 +0200, Joachim Frieben wrote:
> > > yum-presto will help a lot more. But maybe there should be also delta-xml 
> > > files for the repository metadata, because it takes very long to download 
> > > these, too, with a slow connection.
> > > 
> > > Regards,
> > > Till
> > 
> > Right, this is a very serious point. Right now, the meta data in my /var/cache/yum/development amounts to about 65 MB which alone would take 5 hours to download via a standard analog modem connection!
> 
> I'm looking into generating deltas for the xml, but there are a few
> other things on my plate at the moment.  The real issue is that it's not
> always xml files that we download...sometimes we get sqlite files.
> 
> What we need is to have a program that uses the modified bsdiff
> algorithm in deltarpm to generate differences between regular files, not
> just deltarpms.

What's been discussed on yum-devel is generating a textual diff from
old-repodata to new-repodata so we can produce a comparable sqlite w/o
downloading as much.

-sv