[amorphid]

Pretty much! I haven't played with that feature myself, but Erlang's telecom origins help explain this feature. If you're upgrading a telephone switch with N live calls, it'd be optimal to not have to kill those calls just to upgrade some software. There's more nuance to it than that, but "little-to-no downtime", or hot swappable code, is a language feature. Pretty neat idea in an era of "throw away the whole VM/container" to push a config update.