Re: PostgreSQL, clusters and load-balance

Bill Wordsworth escribió:
> On Tue, Mar 25, 2008 at 2:24 PM, Thomas Kellerer <spam_eater@gmx.net
> <mailto:spam_eater@gmx.net>> wrote:
>
>     Bill Wordsworth wrote on 25.03.2008 19:16:
>     > When traffic goes up, my webserver creates multiple instances of
>     > postgresql.exe. At some basic level, aren't they similar to
>     Oracle's RAC
>     > "clusters", except that they are not aware of each other?
>
>     No, absolutely not. Each client request is handled by a single
>     postgres process
>     which is spawned by the postmaster upon connection.
>
>
> Thanks Joshua and Thomas. I guess my ignorance is showing :). Anyway,
> is this spawning being done by postmaster or webserver or both? If
> postmaster, does an application-level persistent connection request
> communicate itself directly to the postmaster, and can the
> postmaster keep track of its spawning?
>
> Also, at some crude level, if I were to direct every alternate
> connection to a different install box of postgresql, won't that help
> with *some* load-balance?
> Cheers, Bill
I dont know the first answer, but maybe you are needing pgpool, check
it, I think that is what you are needing...