> "Mark Woodward" <pgsql(at)mohawksoft(dot)com> writes:
>
>> The point is, that I have been working with this sort of "use case" for
>> a
>> number of years, and being able to represent multiple physical databases
>> as one logical db server would make life easier. It was a brainstorm I
>> had
>> while I was setting this sort of system for the [n]th time.
>
> It sounds like all that would be needed is a kind of "smart
> proxy"--has a list of database clusters on the machine and the
> databases they contain, and speaks enough of the protocol to recognize
> the startup packet and reroute it internally to the right cluster.
> I've heard 'pgpool' mentioned here; from a quick look at the docs it
> looks similar but not quite what you want.
>
> So your databases would listen on 5433, 5434, etc and the proxy would
> listen on 5432 and route everything properly. If a particular cluster
> is not up, the proxy could just error out the connection.
>
> Hmm, that'd be fun to write if I ever find the time...
It is similar to a proxy, yes, but that is just part of it. The setup and
running of these systems should all be managed.