Investigating MQTT

MQTT is a pivotal component in IoT, enabling lightweight and efficient communication among connected devices. In Figure 6.1, we illustrate MQTT within the ubiquitous cloud symbolizing the internet. MQTT operates on a publish-subscribe model, allowing devices to publish messages to specific topics while subscribing to relevant topics. This framework ensures efficient and selective communication, enabling devices to receive only messages relevant to their functions. MQTT’s lightweight design minimizes resource overhead, making it an ideal choice for devices with constrained capabilities.

We start our investigation into MQTT by looking at how the publish-subscribe model in MQTT works.

Understanding the publish-subscribe model in MQTT

The effectiveness of MQTT in enabling communication among IoT devices is due to its publish-subscribe model. This model provides a flexible and scalable way for devices to communicate with each other.

In MQTT, devices...