Your phone rings in the middle of the night and the site is down— do you know what to do? Whether it's Black Friday or a DDoS attack, our Ruby apps and Ruby devs have to be prepared for the best and the worst. Don't let a crisis catch you off guard! Fortunately, you can sharpen your skills ahead of time with load testing. Learn tips and common pitfalls when simulating application load, as well as key metrics and graphs to understand when site availability is compromised.