On Sat, 9 Sep 2000, Valter Mazzola wrote:
> If PostgreSQL Inc. will do a replication server, will be possible?
>
> And Mariposa (http://mariposa.CS.Berkeley.EDU/download.html) ?
>
> My question isn't an academic one, i (probably WE) really need this feature.
>
> thank you in advance for you reply.
Depends on what kind of scalability you need. Replication does not
usually equal scalability.
I know that someone was working on a commercial extension to PostgreSQL
to add clustering based on a shared disk system. Basically he was added a
raw storage manager to PostgreSQL plus a lock manager to co-oridinate
access to the shared disk. That way the two nodes could co-ordinate
access to the shared disk. This is very similar to Oracle Parallel
Server.
Replication is a different beast.
Tom