Ehcache vs Redis: What are the differences?
Ehcache: Java's Most Widely-Used Cache. Ehcache is an open source, standards-based cache for boosting performance, offloading your database, and simplifying scalability. It's the most widely-used Java-based cache because it's robust, proven, and full-featured. Ehcache scales from in-process, with one or more nodes, all the way to mixed in-process/out-of-process configurations with terabyte-sized caches; Redis: An in-memory database that persists on disk. Redis is an open source, BSD licensed, advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.
Ehcache belongs to "Cache" category of the tech stack, while Redis can be primarily classified under "In-Memory Databases".
Ehcache and Redis are both open source tools. Redis with 37.1K GitHub stars and 14.3K forks on GitHub appears to be more popular than Ehcache with 1.32K GitHub stars and 452 GitHub forks.
According to the StackShare community, Redis has a broader approval, being mentioned in 3239 company stacks & 1732 developers stacks; compared to Ehcache, which is listed in 4 company stacks and 8 developer stacks.