From: | Erik Jones <erik(at)myemma(dot)com> |
---|---|
To: | Joshua D(dot) Drake <jd(at)commandprompt(dot)com> |
Cc: | Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Geoffrey <lists(at)serioustechnology(dot)com>, Alan Hodgson <ahodgson(at)simkin(dot)ca>, pgsql-general(at)postgresql(dot)org |
Subject: | Re: In the belly of the beast (MySQLCon) |
Date: | 2008-04-18 19:49:33 |
Message-ID: | 7AF68F09-CB06-4C6C-BA75-2DA3B6157F16@myemma.com |
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Lists: | pgsql-advocacy pgsql-general |
On Apr 18, 2008, at 2:04 PM, Joshua D. Drake wrote:
> On Fri, 18 Apr 2008 14:59:34 -0400
> Alvaro Herrera <alvherre(at)commandprompt(dot)com> wrote:
>
>> I find it pretty unlikely that Slony would be unable to help you
>> upgrade here. Obviously you can upgrade one database at a time.
>>
>> Also, mostly it's not the database size what's a concern, but rather
>> the size of the largest table.
>
> As I recall (I could be wrong) Slony syncs the whole set as a single
> transaction. So if he has his entire database as a set he may
> have a problem regardless of the largest or smallest table. I would
> also
> agree that 30 million rows is likely not a problem but he should still
> check his velocity.
FWIW, Londiste doesn't work with sets and, instead, maintains
replication state, as well as giving you the option to add/remove
tables from replication, on a table-by-table which can be observed
from the command line.
Erik Jones
DBA | Emma®
erik(at)myemma(dot)com
800.595.4401 or 615.292.5888
615.292.0777 (fax)
Emma helps organizations everywhere communicate & market in style.
Visit us online at http://www.myemma.com
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