I can't speak for others, but I work in games and we've spun up a bunch of servers and we use Netty/Jersey for REST and sockets. It's been incredibly stable and

I can't speak for others, but I work in games and we've spun up a bunch of servers and we use Netty/Jersey for REST and sockets. It's been incredibly stable and a joy to program for compared to our previous Node servers. Granted we were using bleeding-edge Node 5 years ago which is not the Node of today.