I guess if you have great ambitions about "web scale" and client retention, a few seconds downtime on your website might mean a loss on a significant amount of

I guess if you have great ambitions about "web scale" and client retention, a few seconds downtime on your website might mean a loss on a significant amount of potentially new customer. As for me, I actually like downtimes. We have data migrations to do anyway on most major updates (they are automatic when the new container boots but the app is unavailable), which can sometimes take hours, and that leaves us notifying our customers for updates and gives us time to do some sanity checks before handing them over control. Compose is a great tool for single (and probably few) VM(s) deployments. I used to love swarm for slightly bigger ones as well since it's a lot easier to manage than kube and can easily be tailored to ones need, still sad it's being deprecated.