Glossary term
What is MQTT (Message Queuing Telemetry Transport)?
MQTT stands for Message Queuing Telemetry Transport.
A lightweight publish/subscribe protocol for devices. Example: Smart home sensors sending temperature readings.
Learn it properly · System DesignLesson 33: Real-Time Apps: Polling, WebSockets and SSEHTTP only lets the client ask. For “new message”, “rider is nearby” or an AI answer streaming in, the server has to push. Short polling, long polling, Server-Sent Events and WebSockets compared — and how to scale millions of open connections.