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Re: Postgres 9.0 Streaming Replication and Load Balancing?

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Hello all!

Still haven't found any solution to this problem.

Having a Postgres 9.0 with assynchronous streaming replication to a hot-standby slave, both with CentOs 5.6, how can I use both DB instances for query load balancing? I've tried with pgPool-II but the pooling mechanism is disruptive with the existing pool on the application servers.

Has anyone had this issue before? Any suggestions?

Best regards,
Paulo Correia


On 13/04/12 14:38, Paulo Correia wrote:
Hi!

I have a Postgres 9.0 on CentOs 5.6 with a functional asynchronous streaming replication to a hot-standby slave (over a TCP connection).

At the moment, the slave only makes the replication, but it accepts read-only queries.

I need to load-balance the DB requests to both servers and was trying pgPool-II but it seems it has some problems if we already have connection pooling elsewhere. I have some application servers that already have their own connection pool functionalities and I wonder if anyone found a solution for that.

Imagine I have some different deploys on a Glassfish or a Tomcat server, using the server connection pooling facilities and from that we would access the database, or the balancer.

Has anyone managed to do this with pgPool-II? Any other options?

Best regards,
Paulo Correia




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