Horton

Re: Sync Rep Design

Stefan Kaltenbrunner <stefan@kaltenbrunner.cc>

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From: Stefan Kaltenbrunner <stefan@kaltenbrunner.cc>
To: Simon Riggs <simon@2ndQuadrant.com>
Cc: Josh Berkus <josh@agliodbs.com>, Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>, Robert Haas <robertmhaas@gmail.com>, Hannu Krosing <hannu@2ndquadrant.com>, greg@2ndquadrant.com, pgsql-hackers@postgresql.org
Date: 2011-01-04T19:50:17Z
Lists: pgsql-hackers 
On 01/04/2011 07:51 PM, Simon Riggs wrote:
> On Tue, 2011-01-04 at 10:28 -0800, Josh Berkus wrote:
>
>> The relevant question is: which configuration(s) can we have ready for
>> the next CommitFest and alpha release?
>
> Based upon that series of conversations, I've reworked the design so
> that there is (currently) only a single standby offering sync rep at any
> one time. Other standbys can request to be sync standbys but they only
> become the sync standby if the first one fails. Which was simple to do
> and bridges the challenges of an exactly identified sync standby and the
> fragility of too closely specifying the config.

ah cool - like that approach for 9.1!


Thanks for working on that!


Stefan