RollingUpdate and Recreate strategy based on stateless and statefull apps

StefanDiaconu

Hello,

In the lab 7.3 exercise there is pointed out the difference on Kubernetes acting whenever we use RollingUpdate strategy or Recreate strategy, but those are applied to a simple nginx webserver without any setup inside. Formally, there is no important difference to catch. The link with statefull apps and stateless apps is not mentioned on the exercise, so we could lose the purpose of the functionality - to keep the availability of an app based on its type.
I am questioning in here the content of the exercise, which doesn't point the method used(on what purpose we use RollingUpdate and on what purpose we use Recreate) for the sake of keeping consistency of an application.
Maybe this was already discussed on the course learning, I didn't verified yet - but on the lab I am following the topic and don't get the opportunity to link the 2 strategies with statefull apps and stateless apps.