Re: Synchronous replication, network protocol

From: Hannu Krosing <hannu(at)krosing(dot)net>
To: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
Cc: Simon Riggs <simon(at)2ndQuadrant(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Pavan Deolasee <pavan(dot)deolasee(at)enterprisedb(dot)com>
Subject: Re: Synchronous replication, network protocol
Date: 2008-12-29 22:48:54
Message-ID: 1230590935.7284.2.camel@huvostro
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On Mon, 2008-12-29 at 13:02 +0200, Heikki Linnakangas wrote:

> >> That will ensure that the standby doesn't need to stall WAL
> >> application because of read-only queries.
> >
> > It doesn't need to. That is already optional.
>
> Oh right. I should've added, "without having to kill queries".

Even killing queries is optional, though it will need help from external
filesystem level snapshot feature.

--------------
Hannu

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