Re: PostgreSQL clustering VS MySQL clustering

Gaetano Mendola <mendola@bigfoot.com>

From: Gaetano Mendola <mendola@bigfoot.com>
To: pgsql-performance@postgresql.org
Date: 2005-02-18T23:20:08Z
Lists: pgsql-performance
Josh Berkus wrote:
> Tatsuo,
> 
> 
>>Yes. However it would be pretty easy to modify pgpool so that it could
>>cope with Slony-I. I.e.
>>
>>1) pgpool does the load balance and sends query to Slony-I's slave and
>>   master if the query is SELECT.
>>
>>2) pgpool sends query only to the master if the query is other than
>>   SELECT.

Don't you think that this is unsafe ?


SELECT foo(id), id
FROM bar;


where foo have side effect.

Is pgpool able to detect it and perform this select on the master ?


Regards
Gaetano Mendola