Hi Simon,

On 23/02/2011, at 10:36 AM, Simon wrote:

> we deploy on amazon ec2, so we just boot an brand shiny new ec2
> instance and build it up with the new version of our apps, then whack
> it behind the apps elastic load balancer. the new ec2 instances start
> to pick up sessions whilst the old ones wind down.

How do you prevent the "old" instances from picking up new sessions—presumably 
using JavaMonitor and specifically setting "refuse new sessions" on them?  
(That is, there's nothing special you're doing with AWS/ELB here, is there?)


-- 
Paul.

http://logicsquad.net/


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