Is There a Difference Between Hard Real Time and Soft Real Time?

Erlang is typically called near real time or soft real time, which means consistently low latencies as well as the system can perform that. For some sort of hardware focused things that's plenty but then you need deterministic performance where it's like no garbage collector will ever be allowed to run in this context. So that's hard real time and embedded system. You're probably going to need to move off of the beam, or I should say outside of the beam to do it. Those are typically written in C or C++.