How Facebook keeps you from hating its apps

An app has to do a lot of things for you to love it—and do only two things wrong to make you hate it: perform sluggishly and consume a lot of power.
Facebook operations engineer Antoine Reversat revealed what Facebook does to prevent those two things and keep users from uninstalling its apps. He showed me the automated mobile testing lab, which has never before been disclosed to the public, that he designed and operates. The system automates testing of Facebook’s mobile apps, Messen