On Thu, Aug 13, 2009 at 05:13:24PM -0400, K.S. Bhaskar wrote: > > > All of the business logic executes on an originating primary > > > instance. Updates are streamed from this instance to up to sixteen > > > secondary instances (there is presently a 20000 kilometer distance > > > limit). > > > >Huh ? How is this enforced ? Measuring wire lag ? > > [KSB] GT.M only needs a TCP/IP connection for streaming. > > Since the circumference of the earth is 40000 kilometers, you cannot > get more than 20000 kilometers between systems, unless you construct > a data center in space - in which case the construction costs would > be astronomical! 8-)
You certainly got me there :-) All this sounds like mature multi-master replication with built-in failover. Now, before some suggests MySQL - I said mature. AFAICT this indeed distinguishes GT.M from the FLOSS databases that I know. Karsten -- GPG key ID E4071346 @ wwwkeys.pgp.net E167 67FD A291 2BEA 73BD 4537 78B9 A9F9 E407 1346 -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
