How to make big MySQL database more diffable/rsyncable? (aka rsyncing big files)

[Jamie Lokier]

JW wrote:
> On Monday 13 July 2009 14:18:38 Ryan Malayter wrote:
> > It would be a big boost for large files if rsync "remembered" the
> > hashes on each end, so it didn't have to re-read the files on every
> > run if the files were unchanged. This is a feature that rsync's
> > developers have rejected, since rsync is designed to be stateless
> > between runs. I believe Unison does keep state at both ends, you might
> > want to look at that.
> 
> Perhaps someone should create an rsync-stateful version? Or maybe a
> --stateful option could be added to the existing rsync.
> 
> Seems like a lot of people request this option.

Why don't they just use Unison?

-- Jamie