Welcome! In this unit, we will delve into implementing Pub/Sub for notifications within our Redis-based backend system project. 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 addition 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 with PHP. Specifically, we'll cover:
- Publishing Messages: How to send notifications.
- Subscribing to Channels: How to receive and handle notifications.
Here is a quick refresher on how Pub/Sub works in Redis using PHP with the Predis library:
Below is a PHP code example using the Predis library to demonstrate setting up a publisher and subscriber, publishing messages to a channel, and handling incoming messages:
