Ninefold Labs – Zero Downtime Deployment for Rails Apps (ninefold.com)

4 comments

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I don't see what's particularly interesting about this. This is a pretty standard technique.

I didn't realize that anyone still used loadbalancers without liveness testing (a superset of this capability), let alone with this capability.

sfeng 12y ago ↗

So before this your app would be down every time you deployed? That's nuts.

At first glance it seems to be the same as Heroku's Preboot functionality.