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VerneMQ

VerneMQ is a high-performance, distributed MQTT broker built for scalability and fault tolerance. Used in production IoT deployments where millions of concurrent device connections are required, VerneMQ extends the standard Mosquitto/HiveMQ landscape with a clustering model optimised for large-scale industrial IoT.

What is VerneMQ?

VerneMQ is built on Erlang/OTP, providing battle-tested distributed systems primitives. It supports MQTT 3.1, 3.1.1, and 5.0, clustering via an internal Plumtree gossip protocol, pluggable authentication and authorisation via webhook or Lua scripts, message persistence, and monitoring via Prometheus metrics. It's designed for horizontal scaling across many nodes without a single point of failure.

Why VerneMQ matters for your career

For IoT deployments exceeding tens of thousands of devices, standard MQTT brokers hit operational limits. VerneMQ's Erlang foundation provides the concurrency model needed for millions of simultaneous connections. Engineers with VerneMQ expertise are valuable to large-scale IoT infrastructure teams.

Career paths using VerneMQ

VerneMQ skills are niche and valuable for IoT Platform Engineer, Backend Engineer (IoT Infrastructure), and Connected Devices Architect roles at companies deploying large device fleets.

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Frequently asked questions

VerneMQ vs. EMQX vs. HiveMQ — which MQTT broker should I choose?▼

EMQX is the most popular high-performance open-source MQTT broker with the largest community. HiveMQ is the enterprise-grade commercial choice. VerneMQ is Erlang-based and well-suited for teams comfortable with the Erlang ecosystem. All scale to millions of connections; the choice often comes down to ecosystem familiarity and support requirements.

What is MQTT 5.0 and why does it matter?▼

MQTT 5.0 adds significant features over 3.1.1: reason codes (better debugging), topic aliases (bandwidth reduction), message expiry, request/response patterns, user properties (custom metadata), and shared subscriptions. For new IoT projects, MQTT 5.0 is recommended; many brokers including VerneMQ support it.

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