Comment by nateb2022

When I wrote the Go one, the biggest challenge I had was synchronizing global state, since it was massively concurrent (there was a server goroutine to handle the main game tick, and two goroutines per connected client, one to read and the other to write).

I ran into a fair amount of deadlock situations during development of different features, and in retrospect I think I would have benefited a lot from the architectural/paradigm shift to an ECS or an actor model like https://github.com/anthdm/hollywood

As for the wins, Go always makes it very easy dealing with concurrency primitives, I really loved using channels, and pretty much everything I needed was in the standard library.