Re: High Availability with Postgres - Mailing list pgsql-general

From Dimitri Fontaine
Subject Re: High Availability with Postgres
Date
Msg-id 87bpb3qw9u.fsf@hi-media-techno.com
Whole thread Raw
In response to Re: High Availability with Postgres  (John R Pierce <pierce@hogranch.com>)
Responses Re: High Availability with Postgres
List pgsql-general
John R Pierce <pierce@hogranch.com> writes:
> failure modes can
> include things like failing fans (which will be detected, resulting in a
> server shutdown if too many fail), power supply failure (redundant PSUs, but
> I've seen the power combining circuitry fail).   Any of these sorts of
> failures will result in a failover without corrupting the data.
>
> and of course, intentional planned failovers to do OS maintenance...  you
> patch the standby system, fail over to it and verify its good, then patch
> the other system.

Ah, I see the use case much better now, thank you. And I begin too see
how expensive reaching such a goal is, too. Going from "I can lose this
many transactions" to "No data lost, ever" is at that price, though.

Regards,
--
dim

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