O'Reilly logo

Hands-On MQTT Programming with Python by Gaston C. Hillar

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Understanding overhead in the different Quality of Service levels

The following diagram summarizes the different packages that are exchanged between an MQTT client and an MQTT server to publish a message with QoS levels 0, 1, and 2. This way, we can easily recognize the increased overhead as we increase the QoS level:

It is very important to take into account the additional overhead required by QoS level 2 and to use it only when it is really necessary.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required