From: Jim C. Nasby <jnasby@pervasive.com>
To: PFC <lists@peufeu.com>
Cc: Scott Marlowe <smarlowe@g2switchworks.com>
Cc: Marcos <mjs_ops@gmx.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: Decide between Postgresql and Mysql (help of
Date: Tue, 28 Mar 2006 15:56:08 -0600
Message-ID: <20060328215608.GA75181@pervasive.com> (raw)
In-Reply-To: <op.s642dpyecigqcu@apollo13>
References: <1143559902.1241.16.camel@servidor>
<1143572392.3625.79.camel@state.g2switchworks.com>
<op.s642dpyecigqcu@apollo13>
Heh, too quick on the send button...
On Tue, Mar 28, 2006 at 09:42:51PM +0200, PFC wrote:
> I'll only speak about MyISAM. MySQL == MyISAM. InnoDB is useless :
> if you want transactions, use postgres.
> If you say to yourself "oh yeah, but it would be cool to use a
> MyISAM table for stuff like hit counters etc"... Is it the job of a SQL
> database to count hits on the root page of your site ? No. To store user
> sessions ? No. The job of a SQL database is to efficiently handle data,
> not to do something that should stay in RAM in the application server
> process, or at worst, in a memcached record.
Actually, it's entirely possible to do stuff like web counters, you just
want to do it differently in PostgreSQL. Simply insert into a table
every time you have a hit, and then roll that data up periodically.
And using MyISAM is no panacea, either. Trying to keep a web counter in
a MyISAM table means you'll serialize every web page on that counter
update.
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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To: pgsql-performance@postgresql.org
Cc: jnasby@pervasive.com, lists@peufeu.com, smarlowe@g2switchworks.com, mjs_ops@gmx.net
Subject: Re: Decide between Postgresql and Mysql (help of
In-Reply-To: <20060328215608.GA75181@pervasive.com>
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