Horton

Re: Sync Rep v19

Dimitri Fontaine <dimitri@2ndquadrant.fr>

View thread
From: Dimitri Fontaine <dimitri@2ndQuadrant.fr>
To: Simon Riggs <simon@2ndQuadrant.com>
Cc: Fujii Masao <masao.fujii@gmail.com>, pgsql-hackers@postgresql.org
Date: 2011-03-03T17:51:11Z
Lists: pgsql-hackers 
Simon Riggs <simon@2ndQuadrant.com> writes:
> On Fri, 2011-03-04 at 00:02 +0900, Fujii Masao wrote: 
>> > * synchronous_standby_names = "*" matches all standby names
>> 
>> Using '*' as the default seems to lead the performance degradation by
>> being connected from unexpected synchronous standby.
>
> You can configure it however you wish. It seemed better to have an out
> of the box setting that was useful.

Well the HBA still needs some opening before anyone can claim to be a
standby.  I guess the default line would be commented out and no standby
would be accepted as synchronous by default, assuming this GUC is sighup.

Regards,
-- 
Dimitri Fontaine
http://2ndQuadrant.fr     PostgreSQL : Expertise, Formation et Support