
Programming
Mar 10, 2026freeCodeCamp
Real-Time Updates: MQTT, Express, and Server-Sent Events Explained
Real-time updates are vital for applications like live scores. This guide demonstrates building a real-time system using MQTT, a lightweight messaging protocol, and Express.js. You'll learn to integrate an MQTT broker with an Express backend and stream instant updates to browsers via Server-Sent Events, using a practical football score application as an example.
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