Hot Standby Hot Standby
sanelson at gmail.com
Fri Nov 21 13:03:56 MSK 2008
Following on from testing yesterday, I can't see a way to do this:
* Traffic ---> backend1
* backend1 fails
* Traffic ---> backend2 (hot standby)
* backend2 fails
* Traffic ---> backend3 (2nd hot standby)
ie we cannot have a hot-standby-hot-standby.
The best I have come up with is weighting the two backup backends, so
only a very small amount of traffic goes to one of the two live backup
machines. This isn't ideal - the spec I need to meet is to have two
tiers of failover, with the app only ever running on a single
How can I achieve this? Is it possible?
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