[derefr]

Indeed, for all the free wins you get from Erlang's actor model (e.g. easy just-add-cores parallelism), you also get losses (e.g. copy-based message-passing is pretty much the least performant signalling mechanism possible.) But when you look at it all through the lens of fault-tolerance, there's really nothing you can change about Erlang's semantics without throwing away some guarantee or another.

When I hear that other languages (e.g. Go) have "actors like Erlang", I have to laugh. Unless you're willing to eat all the disadvantages and performance losses that come with Erlang's approach, you don't really have "actors like Erlang"; you just have green threads.

[wcummings]

It's downright adorable when people compare a half-baked language like Go to Erlang/OTP