Whenever you message another process and need a reply there is a risk of deadlock. I didn't find any primtives in OTP for handling this, you have to structure your actor interaction to avoid it. You can't just have a little bit of shared memory.
The actor model doesn't really offer any benefit over other models while bringing significant downsides. Plus, there are major downsides to using an unpopular platform like Erlang/BEAM.
The actor model doesn't really offer any benefit over other models while bringing significant downsides. Plus, there are major downsides to using an unpopular platform like Erlang/BEAM.