// freeCodeCamp · 10 March 2026

How to Build Real-Time Update Systems with MQTT and Express.js

Real-time updates are everywhere – like live sports scores, stock tickers, chat applications, and IoT dashboards. If you want to build systems that push data to users the moment it changes, you need t

freeCodeCamp

@freecodecamp · David Aniebo

www.freecodecamp.org

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