Hereâs a riddle. My web app keeps all of its data in a SQL database. I can spontaneously tear it down, deploy the code to a different hosting platform, and the app will still serve all the same data. Running my app in production costs $0.03 per month. How is this possible? Thatâs easy. You have a separate database server running somewhere that stores all of your appâs state. No, my app never talks
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