Ehcache vs Redis: Key Differences

There are some differences between Ehcache and Redis, although both are popular memory caching solutions.

1. Storage method: Ehcache is a Java cache library that stores data in JVM memory, while Redis is an in-memory data storage system that stores data in a separate process.
2. Scalability: Redis has better scalability as it can build a cluster by adding multiple Redis instances. Ehcache usually runs only in a single JVM, although it can also be combined with other technologies to achieve distributed caching.
3. Features: Redis offers a broader range of features such as persistence, transactions, publish/subscribe, etc. while Ehcache focuses more on providing simple caching functionality.
4. Performance: Due to Redis being a dedicated caching storage system, it generally outperforms Ehcache in terms of performance. Redis employs more optimization techniques and data structures, enabling it to efficiently handle a large volume of requests.

Overall, if a simple, memory-based caching solution is needed, Ehcache is a good choice. For more advanced functionality and better performance, consider using Redis.