MQTT broker

Perform and scale better with MQTT 5.0

The number of sensors in the IoT and M2M systems is skyrocketing. The flespi team has been working hard to add the MQTT 5.0 specification support into the broker to enhance the productivity and scalability of your projects. Most MQTT 5.0 features already implemented! Let us know if you need something that we are missing.

Be the boss in the isolated MQTT namespace

Each flespi user operates in an isolated MQTT topics namespace. It's only you who chooses how to name messages topics and what kind of hierarchy to use.

Operate the broker via REST API

Manage sessions, publish messages, read and delete retained messages, and access logs via a flexible REST API.

Fine-tune access to topics

We take security and privacy seriously. To make sure each subscriber gets the data they need but cannot cause harm by their negligence or accidental actions, we devised a flexible access control system. It allows creating tokens with different ACLs to finely customize what different parties can access within a topic.

Use shared subscriptions for easy load-balancing

When incoming messages start heavily bombarding the handler of your business app, you might lose data. We don’t want that! flespi offers shared subscriptions to spread the load across multiple service workers in a smart manner.

Never hit the speed limit

It’ frustrating when your technological partner can’t live up to your needs. We don’t want to be a bottleneck as your business grows. flespi MQTT broker can receive one million messages per second and send three million messages per second. Impressive, huh?

Stay safe with SSL-protected MQTTS and WSS connections

We care about the security of the messages you entrust to our MQTT broker. That’s why we support MQTT over SSL and MQTT over Secure WebSocket. Also, you can create an isolated namespace with any name (except /flespi).