Mischa Sandberg wrote:
> Quoting Bruce Momjian <pgman@candle.pha.pa.us>:
>
> > 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.
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073