MQTT Essentials - A Lightweight IoT Protocol: The preferred IoT publish-subscribe lightweight messaging protocol

The user experience regarding "MQTT Essentials - A Lightweight IoT Protocol" presents a mixed bag of feedback. For some readers, the book serves as a valuable resource for understanding the MQTT protocol. One reviewer highlighted that it helped in overcoming challenges associated with implementing MQTT in Google IoT CORE, indicating that the material is applicable and valuable for practical application. This suggests that the book can provide a solid foundation for those new to MQTT or looking to create working samples. However, not all feedback is positive. Some readers express frustration with the writing style, claiming that the book contains excessive repetition, which detracts from the overall learning experience. This criticism implies that the content could have been more concise, suggesting that the author may have unnecessarily extended the length of the book, resulting in unnecessary filler material. Overall, "MQTT Essentials" seems to be beneficial for those willing to sift through the text to extract valuable insights. The book provides essential knowledge for understanding and implementing MQTT, but the repetitive nature might hamper the overall experience for some readers.