Ninefold Labs – Zero Downtime Deployment for Rails Appsninefold.com 13 pointsmillioncents12 years ago4 commentsSaveHideCopy link On HNComments−michaelmior12yI don't see what's particularly interesting about this. This is a pretty standard technique.−amalcon12yI didn't realize that anyone still used loadbalancers without liveness testing (a superset of this capability), let alone with this capability.−robotfelix12yAt first glance it seems to be the same as Heroku's Preboot functionality.Heroku docs: https://devcenter.heroku.com/articles/labs-preboot−sfeng12ySo before this your app would be down every time you deployed? That's nuts.
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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.
At first glance it seems to be the same as Heroku's Preboot functionality.
Heroku docs: https://devcenter.heroku.com/articles/labs-preboot
So before this your app would be down every time you deployed? That's nuts.