Yup! And this is why I mentioned that the Signal team's strength may be more on the cryptography/privacy side rather than distributed systems. However, Erlang/O

Yup! And this is why I mentioned that the Signal team's strength may be more on the cryptography/privacy side rather than distributed systems. However, Erlang/OTP and the BEAM do get some great scalability features straight out of the box that can help you "cheat" further until you really have to dig deep into distributed systems scalability stuff.