Redis is one of the most popular NoSQL database solutions, and Java is one of the world's most popular programming languages. Although it seems natural for the two to work together, Redis doesn't come with native support for Java.
Instead, Java developers who want to integrate with Redis will need to use a Java client library. Redisson is a Redis-based in-memory data grid for Java that makes it easy for Java developers to work with Redis. Redisson provides implementations of many Java data structures to be distributed and scalable so that they can run on top of the Redis server.