Amitabh Kumar wrote:
> We have to develop an application for one of our clients. We are considering
> using PostgreSQL as the database. However, reliablity and scaliblity are
> key consideration. So before we go the PostgreSQL way, I would like to be
> sure that it supports the following features.
>
> 1. Load balancing using more that 2 server in active-active mode. It should
> be transparent to the client application. We should be able to add server
> as and when needed as growth is still unpredictable.
>
> 2. Failover, where one server takes up the load in case of failover of a
> server in the active-active cluster. Loss of last uncomitted transaction is
> acceptable but the client application should not have to restablish connection.
I've recently (accidentally) found the following piece of
software (I wonder why it's not mentioned on postgresql.org):
http://www.csra.co.jp/~mitani/jpug/pgcluster/en/
It's is a modified version of PostgreSQL (i.e. a patchset)
supporting multi-master synchronous replication. According
to the description, it might be exactly what you're looking
for.
Best regards
Oliver
--
Oliver Fromme, secnetix GmbH & Co KG, Oettingenstr. 2, 80538 München
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and may not necessarily reflect the opinions of secnetix in any way.
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