An issue you might face is that during rollouts, you will still have some servers running the old binary and some running the new binary. So you must either: 1

An issue you might face is that during rollouts, you will still have some servers running the old binary and some running the new binary. So you must either: 1. Stop all old servers before starting the new ones -> downtime, might be acceptable 2. Have your clients handle the fact that they might hit vN or vN+1 of your services.