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HQ: Scaling A Web App to Meet Demand

For the last few months, I grab my phone most nights at 9 p.m. and open the HQ app and join a live trivia game. For 15 minutes, users from around the world answer increasingly-difficult trivia questions for money. You miss a question, you’re out. You can keep watching, but you won’t win any money. I’ve never won, but I’ve made it to question 10 (out of 12) once.