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From: Bruce Momjian <[email protected]>
To: Mischa Sandberg <[email protected]>
Cc: Joshua D. Drake <[email protected]>
Cc: Jeff Davis <[email protected]>
Cc: Marc G. Fournier <[email protected]>
Cc: Robert Treat <[email protected]>
Cc: PostgreSQL-documentation <[email protected]>
Subject: Re: [COMMITTERS] pgsql: Remove replicaiton FAQ item.
Date: Sun, 24 Apr 2005 19:24:36 -0400 (EDT)
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

Mischa Sandberg wrote:
> Quoting Bruce Momjian <[email protected]>: 
>  
> > Joshua D. Drake wrote: 
> > > Jeff Davis wrote: 
> > > > Should the text include a mention of synchronous vs. 
> > asynchronous? Or 
> > > > does master-master imply synchronous? 
> > >  
> > > It shouldn't. It is possible to have synchronous replication 
> > without it 
> > > being master<->master. 
> >  
> > We could mention async vs sync but at the FAQ stage I think the 
> > multi-master/master-slave disinction is enough. Let's see what 
> > questions 
> > we get. 
>  
> About all you can say is, it is not possible to implement synchronous 
> master-master replication, because of conflict resolution of 
> simultaneous transactions. 

You mean asynchronous master-master?  There are some implementations
(Sybase?, pgreplicator) that do this and have conflict resolution.

-- 
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  [email protected]               |  (610) 359-1001
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