Implementing Consumer Group Logic
Learn to create groups, read messages using `XREADGROUP`, and acknowledge processing with `XACK`.
Welcome to Consumer Groups!
In the previous lesson, we learned what Redis Streams are. Now, let's dive into Consumer Groups! They are a powerful feature that lets multiple clients process messages from a stream cooperatively.
Imagine a team of workers processing tasks from a single to-do list. Each worker gets unique tasks, and if one fails, others can pick up pending tasks. That's what Consumer Groups enable!
Set Up Your Group
Before consumers can join, you need to create a Consumer Group for your stream. This is done using the XGROUP CREATE command.
It tells Redis: "Hey, for this stream, make a new group." You also specify an ID, which is typically 0 or $ to start reading from the beginning or end of the stream.
All lessons in this course
- Introduction to Consumer Groups
- Implementing Consumer Group Logic
- Handling Pending Messages & Failures
- Monitoring Consumer Group Lag