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  • From: "Jeremy Blosser (emrys)" <jblosser-smgl AT firinn.org>
  • To: sm-discuss AT lists.ibiblio.org
  • Subject: Re: [SM-Discuss] Sorcery and the Broken Cache
  • Date: Fri, 15 Jul 2005 16:03:28 -0500

On Jul 15, Andrew [afrayedknot AT thefrayedknot.armory.com] wrote:
> On Fri, Jul 15, 2005 at 03:29:20PM -0500, Jeremy Blosser (emrys) wrote:
> > On Jul 15, Seth Alan Woolley [seth AT positivism.org] wrote:
> > > If there are too many broken caches for reliability, we could implement
> > > our own caching using a manifest file with a list of md5sums of the big
> > > tarballs. This would allow more frequent checks for tarball changes as
> > > well, as they wouldn't have to download the whole tarball every time to
> > > check for a new update.
> >
> > Heh, I was just thinking about proposing this today, while trying to check
> > if some changes had made it to the test tarball yet w/the p4 stunnel
> > issues. Having "{scribe,sorcery} update" check an md5 *before* starting
> > the full download would save a lot of time/bandwidth.
>
> so, why not rsync?

It would be useful for rsync as well. rsync takes a long time to run to
even decide it has nothing to update. The md5 comparison would happen
within seconds and eliminate the need for rsync to even get called a lot of
the time.

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