Hi. I'm new to postgresql in general, and have been tasked with coming
up with a replication solution for our postgresql based application.
Assuming we don't bite off trying to roll our own solution, it looks
like the options for replication are:

1) contrib/rserv
2) ERServer
3) slony
4) Mammoth Replicator (commercial)

We have a requirement to be able to replicate to multiple slaves, so
that seems to remove rserv from the list (at least as far as I can tell
from its README). The Command Prompt product Mammoth looks pretty good,
but we prefer to investigate open-source solutions first. 

That seems to leave ERServer and slony. I had just started working on
getting erserver built and configured when I found out about slony,
which I just downloaded. I've read the concept paper for slony, and I
like the fact that sequences can be replicated, and the "replication
chains" that can be defined. I don't have a clear picture yet, though,
of what the differentiators are between erserver and slony.

I would be interested and grateful to hear opinions about the relative
strengths of erserver and slony from anybody who has experience with
them or works on their development. 

Thanks!

-  DAP
====================================================== 
David Parker    Tazz Networks    (401) 709-5130