Re: Trimming the CPAN - "Automatic Purging"

Much of this discussion is beyond my depth but in terms of keeping it
simple, and trying to limit the stat calls on the upstream servers,
what about DNS as a replication model?  You could break up the tree at
logical divisions similar to zones and assign them serial numbers
(say a .serial file) and then still use rsync, but broken up into modules to
avoid recursion into sub-trees where the serial number is up to date?
The rsyncd.conf could be published also so replicas use the same
include/exclude logic.
-lee