> Node is slower but since it's single threaded they load balance a bunch of servers and in practice it's just as fast when considering the developer productivi

> Node is slower but since it's single threaded they load balance a bunch of servers and in practice it's just as fast when considering the developer productivity This sentence doesn't make any sense. It can't be both slower and just as fast, developer productivity is a totally different concept to performance. And being single threaded just means you have to spend more RAM to saturate your CPUs (threads are cheaper than processes), nothing stops you running many single threaded JVMs and load balancing across them, it's just inefficient.