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Re: Replication docs update

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Magnus Hagander <magnus(at)hagander(dot)net>
Cc: PostgreSQL-documentation <pgsql-docs(at)postgresql(dot)org>
Subject: Re: Replication docs update
Date: 2012-03-21 17:16:30
Message-ID: 20120321171630.GB17070@momjian.us (view raw or flat)
Thread:
Lists: pgsql-docs
On Wed, Mar 21, 2012 at 05:06:27PM +0100, Magnus Hagander wrote:
> On Wed, Mar 21, 2012 at 16:44, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> > On Wed, Mar 21, 2012 at 12:01:34PM +0100, Magnus Hagander wrote:
> >> On Tue, Mar 20, 2012 at 22:26, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> >> > Our chapter, "Comparison of Different Solutions", needs an update to use
> >> > our new streaming replication terminology, and an update to mention the
> >> > synchronous option.
> >> >
> >> > Patch attached.  I would like to apply it to head and 9.1.
> >>
> >> Is it really a good idea to remove the name "hot standby" where you've
> >> done so? It's a term that's pretty well set by now. Maybe instad "hot
> >> standby using transaction log replication" instead of taking it away
> >> completely?
> >
> > Well, hot/warm standby is really a side-feature of replication, not a
> > replication technology itself.  WAL streaming is a replication
> 
> True. I'm just saying it's a term that many are familiar with, and
> thus removing it doesn't entirely help. Removing PITR is a good idea
> however :-)

Well, the term doesn't help describe what it is, so familiar doesn't
help us much.

> > technology.  For example, Shared Disk Failover is technically a warm
> > standby too.
> 
> Pretty sure Shared Disk qualifies as cold standby.

Why is it cold?  It can start up right away.  What does warm mean then?

-- 
  Bruce Momjian  <bruce(at)momjian(dot)us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +

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