$ up --port 80 --watch some-http-server.js
This command spins up some worker processes (defaulting to how many CPUs on the box, or one in development environments) which serve up your requests. When a reload signal is received, Up spins up another set of workers and releases the old set after the the first worker of the new set is bound to a port. Eventually, all the new workers will join the round robin.
Have comments? Send a tweet to @TheChangelog on Twitter.
Subscribe to The Changelog Weekly – our weekly email covering everything that hits our open source radar.