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From: Dimitri Fontaine <dimitri@2ndQuadrant.fr>
To: Jonathan Tripathy <jonnyt@abpni.co.uk>
Cc: Scott Marlowe <scott.marlowe@gmail.com>
Cc: pgsql-general@postgresql.org
Subject: Re: Replication
Date: Tue, 02 Nov 2010 16:20:27 +0100
Message-ID: <m2bp673g78.fsf@2ndQuadrant.fr> (raw)
In-Reply-To: <4CCFB6CF.4060006@abpni.co.uk>
References: <4CCF1AC4.6060800@abpni.co.uk>
	<AANLkTin8x5EruxEser40veOzq8_kGWbaQ7VkPy0H=hXM@mail.gmail.com>
	<4CCF4187.8010205@abpni.co.uk>
	<AANLkTingS59Fep3u-JoDw77oauoqu2inBffPCuCNxxdr@mail.gmail.com>
	<4CCFB6CF.4060006@abpni.co.uk>

Jonathan Tripathy <jonnyt@abpni.co.uk> writes:
> What is the difference between the "Hot-Standby" and "Warm-Standby"? Is the
> only different that the "Hot-Standby" standby servers are read-only, whereas
> the "Warm-Standby" standbys can't be queried at all?

That and the fact that running queries are not canceled at the time you
flick the switch to have your standby a master. The ongoing read-only
traffic is not affected. That's hot.

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



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