This was interesting simply for the explanation of Erlang systems, but as for the project itself I currently use Supervisor (http://supervisord.org) for this purpose, and I've been pretty happy with it.
Any reasons to make the switch?
Any reasons to make the switch?
As an example say you have a chat system, you will have a process for each user [0]. If you have a million users, you will end up with a million processes. The supervisor tree watches these processes, so if one crashes a single user may get logged out but everybody else will be unaffected.
[0] In reality you'll probably have it even more fine grained than that, so users will end up with multiple processes.