On Mon, Nov 7, 2011 at 4:54 PM, Vitaliy Semochkin <vitaliy.se at gmail.com> wrote:
> Is it possible to perform such replication using Slony?
> If it is so, where to dig? ;-)
>

That's how slony works out of the box.  The only issue you may have is
if there is a slow WAN link between the servers, and you have lots and
lots of updates.  If there is a significant time of disconnection
between the two, the backlog of change may be too great to apply.
Sometimes it is faster to start from scratch in those situations.