Pub Sub Model | MQTT Essentials Part 3

In this episode of MQTT Essentials series we will have a look at the pub sub model, also known as the publish subscribe pattern - the foundational choice of communication that MQTT implements.

The pub sub pattern provides an alternative to a traditional client-server architecture. In the client-server model, a client communicates directly with an endpoint. The pub sub model decouples the client that sends a message (the publisher) from the client or clients that receive the messages (the subscribers). The publishers and subscribers never contact each other directly. In fact, they are not even aware that the other exists. The connection between them is handled by a third component (the broker). The job of the broker is to filter all incoming messages and distribute them correctly to subscribers.

Characteristics of Pub Sub:
Space decoupling
Time decoupling (queueing)
Synchronization decoupling

Pub Sub scales better than the traditional client-server approach.

** Chapters / Table of Contents **

00:00 Introduction
00:37 Client / Server Protocol
01:09 Pub Sub Pattern in MQTT
02:05 Publish / Subscribe Characteristics of MQTT
03:35 Scalability Advantage of Pub/Sub in MQTT
04:11 Single Point of Failure (SPOF) in MQTT
05:15 Announcing Part 4: Client Broker Connection Establishment in MQTT

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👉 Continue watching the MQTT Essential Series now: Part 4 - Client Broker Connection Establishment    • MQTT Client Broker Setup | MQTT Essentials...  

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