Re: Load Balancing / Failover cluster

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Hi,

On 24 Jul 2004, 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 suggest you to take a look at C-JDBC (Clustering JDBC),which is an open
source project for these:

http://c-jdbc.objectweb.org/ (Home page)
http://freshmeat.net/projects/cjdbc

I also suggest you to read the following white paper about c-jdbc, which
also mentions about PostgreSQL:

C-JDBC: Flexible Database Clustering Middleware
http://c-jdbc.objectweb.org/current/doc/C-JDBC_Flexible_Database_Clustering_Middleware.pdf

Regards,
- --
Devrim GUNDUZ
devrim~gunduz.org devrim.gunduz~linux.org.tr
http://www.tdmsoft.com
http://www.gunduz.org

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