Pub/Sub System in C/C++: Course Overview

Unlock the Power of Asynchronous Communication with Pub/Sub in C/C++

Welcome to this comprehensive course on designing and implementing a robust Publish-Subscribe (Pub/Sub) System using C/C++. This course is tailored for developers who aspire to master the principles of real-time messaging systems and understand how to build scalable, efficient, and loosely-coupled communication architectures from scratch.

What is a Pub/Sub System?

A Publish-Subscribe system is a messaging paradigm that decouples the sender (publisher) from the receiver (subscriber). It allows for seamless communication between multiple components by enabling subscribers to receive updates on topics they are interested in, without being directly tied to the publisher. This design is widely used in real-world applications like:

• Messaging Systems: RabbitMQ, Kafka

• Microservices Communication

• IoT and Real-Time Event Systems

What You Will Learn

In this course, we’ll build a fully-functional Pub/Sub system using C/C++, covering every essential concept step by step:

1. Understanding Pub/Sub Fundamentals

   • How publishers and subscribers interact through topics.

   • Decoupling communication with message brokers.

   
   

2. Designing the Architecture

   • Implementing message queues for efficient data flow.

   • Managing subscribers and topic registries.

   • Handling asynchronous communication and thread safety.

     
     

3. Building Core Components in C/C++

   • Publisher: A module to publish messages to specific topics.

   • Subscriber: A module to subscribe to topics and receive updates.

   • Broker: The central hub to manage topics, deliver messages, and coordinate between publishers and subscribers.

     
     

4. Optimizing for Performance

   • Implementing thread pools for parallel processing.

   • Minimizing latency with efficient data structures.

   
   

5. Message Prioritisation:

   • Allow publishers to assign priorities to messages.

   • The distributor delivers higher-priority messages first to subscribers.

     
     

6. Heartbeat and Health Checks:

   • Implement a heartbeat mechanism to check the liveness of publishers and subscribers.

   • Detect and remove inactive entities automatically.

     
     

7. Dynamic Scaling:

   • Add auto-scaling support to adjust resources based on system load.

     
     

8. Message Encryption:

   • Encrypt messages to secure data in transit and at rest.