| From: | Brad Nicholson <bnichols(at)ca(dot)afilias(dot)info> |
|---|---|
| To: | Bruno Wolff III <bruno(at)wolff(dot)to> |
| Cc: | Sebastian Reitenbach <itlistuser(at)rapideye(dot)de>, pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: postgres in HA constellation |
| Date: | 2006-10-04 16:05:02 |
| Message-ID: | 1159977902.15773.37.camel@dba5.int.libertyrms.com |
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| Lists: | pgsql-admin |
On Wed, 2006-10-04 at 10:43 -0500, Bruno Wolff III wrote:
> On Wed, Oct 04, 2006 at 11:23:45 -0000,
> Sebastian Reitenbach <itlistuser(at)rapideye(dot)de> wrote:
> If you have multiple data centers to protect against disaster, then you might
> look at SLONY which you can use to replicate to a slave system. However, I
> think it is possible for the master to report a transaction as commited
> before it is shipped off to the slave, so that if the master fails you might
> lose some transactions when switching to the slave. But double check with
> the SLONY documentation on this.
This is indeed accurate, and highly likely to happen if you need to do a
fail over. It all depends on the level of activity.
Brad.
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