Welcome! In this unit, we will delve into implementing Pub/Sub for notifications within our Redis-based backend system project using C++. You've already learned how to manage user data, handle transactions, and use streams for event logging. Now, we'll add another powerful feature to our project: real-time notifications using Redis Pub/Sub (publish/subscribe). This will enable our system to send and receive messages instantaneously.

In this unit, we'll focus on creating a simple real-time notification system using Redis Pub/Sub in C++. Specifically, we'll cover:

1. Publishing Messages: How to send notifications.
2. Subscribing to Channels: How to receive and handle notifications.

Here is a quick refresh of how Pub/Sub works in Redis using C++ and hiredis: