From: | Florian Weimer <fw(at)deneb(dot)enyo(dot)de> |
---|---|
To: | mladen(dot)gogala(at)vmsinfo(dot)com |
Cc: | Greg Smith <greg(at)2ndquadrant(dot)com>, Aaron Turner <synfinatic(at)gmail(dot)com>, pgsql-performance <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: large dataset with write vs read clients |
Date: | 2010-10-10 11:45:01 |
Message-ID: | 871v7y2rwi.fsf@mid.deneb.enyo.de |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-performance |
* Mladen Gogala:
> I have a logical problem with asynchronous commit. The "commit"
> command should instruct the database to make the outcome of the
> transaction permanent. The application should wait to see whether the
> commit was successful or not. Asynchronous behavior in the commit
> statement breaks the ACID rules and should not be used in a RDBMS
> system.
That's a bit over the top. It may make sense to use PostgreSQL even
if the file system doesn't guarantuee ACID by keeping multiple
checksummed copies of the database files. Asynchronous commits offer
yet another trade-off here.
Some people use RDBMSs mostly for the *M* part, to get a consistent
administration experience across multiple applications. And even with
asynchronous commits, PostgreSQL will maintain a consistent state of
the database.
From | Date | Subject | |
---|---|---|---|
Next Message | Віталій Тимчишин | 2010-10-10 12:02:03 | Re: Slow count(*) again... |
Previous Message | Thom Brown | 2010-10-10 11:04:31 | Re: DB slow down after table partition |