[kayoone]

im not an expert but arent UDP Socket connections more like an fire and forget scenario which doesnt create alot of waiting ? Id think that game servers have to compute heavier stuff per tick and have to process all the incoming packets anyway so that waiting for IO isnt really an issue ? It might make sense to have the game world updating and sending/recieving packets in different threads though, so is that were nodejs makes sense?

[loeg]

The network stuff is, yeah. But presumably you want your minecraft world to be durable, which means hitting disk. And you don't want your network stuff blocked behind that.

[kayoone]

ok makes sense but i wouldnt write every change to the disk anyway. The server state can well be kept inside memory and only be saved once in a while, but nevertheless doing that in a different thread would make sense.