Re: Postgres Replication Options

Hi,

Il 09/02/11 01:34, Rangi, Jai ha scritto:
>
> Hello,
>
> I am looking for a replication solution for PG 9.x. Idea is to have
> one master replication server and multiple (around 20) slave servers
> read only. I see PG 9 has inbuilt Streaming replication. Is this the
> best replication solution. How about slony? Which option will keep the
> slave nodes in closest sync to master and which is more stable.
>
With PostgreSQL 9.0 in terms of builtin replication you can take
advantage of Hot Standby based on either WAL shipping or on Streaming
Replication.I would personally stick with builtin solutions if you plan
to have full replicas of your databases, even in terms of maintenance
and upgrades later on (in the long term). Some tools, including
replication manager (repmgr) are coming out in order to manage HA
clusters (for more info:
http://blog.2ndquadrant.com/en/2011/01/easier-postgresql-90-clusters.html)

Cheers,
Gabriele

--
Gabriele Bartolini - 2ndQuadrant Italia
PostgreSQL Training, Services and Support
gabriele(dot)bartolini(at)2ndQuadrant(dot)it | www.2ndQuadrant.it