Ehcache vs Hazelcast: What are the differences?
Developers describe Ehcache as "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. On the other hand, Hazelcast is detailed as "Clustering and highly scalable data distribution platform for Java". With its various distributed data structures, distributed caching capabilities, elastic nature, memcache support, integration with Spring and Hibernate and more importantly with so many happy users, Hazelcast is feature-rich, enterprise-ready and developer-friendly in-memory data grid solution.
Ehcache and Hazelcast are primarily classified as "Cache" and "In-Memory Databases" tools respectively.
Ehcache and Hazelcast are both open source tools. Hazelcast with 3.18K GitHub stars and 1.16K forks on GitHub appears to be more popular than Ehcache with 1.33K GitHub stars and 456 GitHub forks.
According to the StackShare community, Hazelcast has a broader approval, being mentioned in 26 company stacks & 16 developers stacks; compared to Ehcache, which is listed in 4 company stacks and 8 developer stacks.