All users expect a fast experience from web apps. But not all users were created equal, and not all of them have a shiny Mac and high-speed internet connection. Can you tell if your users are happy about your app performance? Probably not, unless you’re monitoring it. In this talk I will show you how to build a real time monitoring system, with minimal effort and no cost, that will provide insights on how your app performs even on your grandpa’s old mobile phone while he’s on …