Django Redis is a popular integration of Redis, an in-memory data structure store, with Django, a high-level Python web framework. Redis is used as a cache and session store for Django applications to improve performance and scalability. By using Redis, you can speed up data access and reduce database load.

Here are some common use cases for Django Redis:

1. Cache backend: Django allows you to use various cache backends to store the results of expensive operations so that subsequent requests can be served faster. Redis is a popular choice for caching due to its high performance and flexibility.

2. Session storage: By default, Django stores session data in the database, but using Redis as a session store can significantly improve performance, especially in scenarios with high session read and write operations.

3. Rate limiting: You can use Redis to implement rate limiting in Django applications, preventing abusive behavior or excessive requests from a particular user or IP address.

4. Real-time data processing: Redis provides data structures like lists, sets, and pub/sub (publish/subscribe) that enable real-time data processing and communication between different components of your application.

To use Django Redis, you need to install the required package. As of my knowledge cutoff in September 2021, the commonly used package was django-redis, which provides integration with Redis. To install it, you can use pip:

Next, you need to configure your Django project to use Redis as the cache and/or session store. In your Django settings file (settings.py), you would add the necessary configurations. Here’s a simplified example:

Make sure you have a running Redis server on the specified location (in this example, it’s 127.0.0.1:6379), and the appropriate Redis library for Python (usually redis package) is installed.

Please note that the specific package versions and configurations might have evolved beyond my knowledge cutoff date. Always refer to the official documentation for the latest information and best practices.