[Yum] Yum speedup

[seth vidal]

On Tue, 2006-03-28 at 22:30 -0800, PF wrote:
> I was thinking of ways of speeding up what I (as a user) see as "the
> slow bits" of Yum.
> 
> One thing is that Yum has to know when repositories have changed, and
> currently it uses http or ftp for that.  Could it use DNS, as the ClamAV
> project does?
> 
> DNS is very scalable, has lots of caching, and is fairly solid.  And
> it's faster than downloading an XML file, because downloading requires a
> DNS lookup first.
> 
>    % nslookup -q=txt repositoryversion.fedora.redhat.com
>    Non-authoritative answer:
>    repositoryversion.fedora.redhat.com    text = "As of 2006-03-28, 
>    this repository is at Version 5.0.1.  This message's signature:
>    e84f1115fe94"
> 
> See 'nslookup -q=txt current.cvd.clamav.net' for a working (though
> cryptic) example.
> 
> Is there merit in copying this idea for Yum?

wouldn't that mean you'd need a hostname and txt entry for each
repository on a server?

So if I had 25 repositories on a single webserver (which I do) I would
need a separate host and txt entry for each one?

That seems a bit cumbersome, doesn't it?

-sv