Bruce Momjian wrote:
> Josh Berkus wrote:
> > Jim,
> >
> > > That's true of simple query broadcasting (ie: pgpool), but not true ?
> > > of Continuent/Sequoia. Continuent's software adds a lot of additional ?
> > > features on top of simple query broadcasting, making it far more ?
> > > robust than simply spewing queries out to every node in the cluster. ?
> > > You still have to be very careful with how you use it, but not nearly ?
> > > as much as with simpler solutions.
> >
> > I think the general term is "statement-based replication", not "broadcasting".
>
> Well, the problem is that you can use a statement-based method to
> replication from a master to a slave. I think MySQL used to use this
> method, or still does, so I don't think the term "statement-based" is
> clear enough, though I am open to other terms than "broadcast".
Oops, I see Markus Schiltknech likes the term "statement-based
replication" better too. Certainly master-slave communication using
"statement-based replication" has the same drawbacks as the broadcast
method, but I wanted to highlight that the broadcast was happening
outside the server. Do we need a master/slave "statement-based
replication" item and a middleware broadcast item?
--
Bruce Momjian bruce@momjian.us
EnterpriseDB http://www.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +