Ninefold Labs – Zero Downtime Deployment for Rails Apps

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

At first glance it seems to be the same as Heroku&#x27;s Preboot functionality.<p>Heroku docs: <a href="https://devcenter.heroku.com/articles/labs-preboot" rel="nofollow">https:&#x2F;&#x2F;devcenter.heroku.com&#x2F;articles&#x2F;labs-preboot</a>

So before this your app would be down every time you deployed? That&#x27;s nuts.