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Hands-On MQTT Programming with Python

You're reading from  Hands-On MQTT Programming with Python

Product type Book
Published in May 2018
Publisher Packt
ISBN-13 9781789138542
Pages 228 pages
Edition 1st Edition
Languages
Concepts
Author (1):
Gaston C. Hillar Gaston C. Hillar
Profile icon Gaston C. Hillar
LinkedIn
Gaston C. Hillar is Italian and has been working with computers since he was 8 years old. Gaston has a Bachelor's degree in computer science (graduated with honors) and an MBA. Currently, Gaston is an independent IT consultant and a freelance author who is always looking for new adventures anywhere in the world. He was a senior contributing editor at Dr. Dobb's, and has written more than a hundred articles on software development topics. He has received the prestigious Intel Black Belt Software Developer award eight times. He has written many articles about Java for Oracle Java Magazine. Gaston was also a former Microsoft MVP in technical computing. He lives with his wife, Vanesa, and his two sons, Kevin and Brandon.
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Table of Contents (9) Chapters

Preface 1. Installing an MQTT 3.1.1 Mosquitto Server 2. Using Command-Line and GUI Tools to Learn How MQTT Works 3. Securing an MQTT 3.1.1 Mosquitto Server 4. Writing Code to Control a Vehicle with Python and MQTT Messages 5. Testing and Improving Our Vehicle Control Solution in Python 6. Monitoring a Surfing Competition with Cloud-Based Real-Time MQTT Providers and Python 7. Solutions 8. Other Books You May Enjoy

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.
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Authors (1)

Profile icon Gaston C. Hillar
LinkedIn
Gaston C. Hillar is Italian and has been working with computers since he was 8 years old. Gaston has a Bachelor's degree in computer science (graduated with honors) and an MBA. Currently, Gaston is an independent IT consultant and a freelance author who is always looking for new adventures anywhere in the world. He was a senior contributing editor at Dr. Dobb's, and has written more than a hundred articles on software development topics. He has received the prestigious Intel Black Belt Software Developer award eight times. He has written many articles about Java for Oracle Java Magazine. Gaston was also a former Microsoft MVP in technical computing. He lives with his wife, Vanesa, and his two sons, Kevin and Brandon.
Read more
See other products by Gaston C. Hillar

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