Ehcache

Ehcache is an open source, standards-based cache used to boost performance, offload the database and simplify scalability. Ehcache is robust, proven and full-featured and this has made it the most widely-used Java-based cache.

Its features include:

• Fast and Light Weight
• Scalable to hundreds of caches
• Multiple CacheManagers per virtual machine
• Distributed Caching
• Provides LRU, LFU and FIFO cache eviction policies
• Supports Object or Serializable caching
• Full implementation of JSR107 JCACHE API
• Extensible
• Persistence, Flush to disk on demand
• Supports as standalone server, SOAP cache server, RESTful cache server
• Works with Hibernate, Google App Engine