Redis offers persistence and in-memory replication capabilities, making it suitable for use cases like session management, queues, pub/sub, and general-purpose caching. As a freelancer, Rahul uses Redis to overcome unique problems by leveraging its pub/sub feature to notify processes of new detections, eliminating the need for a daily job. By adopting Redis, he discovered other advantages such as using built-in data structures to perform analytics, gathering information on file changes and applications making those changes. Getting started with Redis is extremely easy, and it can be accessed for free through Redis Cloud's 30 MB plan.