Ehcache – standards-based cache that boosts performance

Ehcache is a fast and simple, thread safe, standards based pure Java, in-process cache, which acts as a pluggable cache for Hibernate 2.1.

It has a small memory footprint, minimal dependencies, and comprehensive documentation.

Ehcache is widely used in such open source projects as Hibernate and Spring. Terracotta also offers an enterprise edition.

Features include:

  • Scalable:
    • Provides Memory and Disk stores for scalability into gigabytes.
    • Scalable to hundreds of caches.
    • Tuned for high concurrent load on large multi-cpu servers.
    • Multiple CacheManagers per virtual machine.
  • Flexible:
    • Supports Object or Serializable caching.
    • Support cache-wide or Element-based expiry policies.
    • Provides LRU, LFU and FIFO cache eviction policies.
    • Provides Memory and Disk stores.
    • Distributed.
    • Dynamic, Runtime Configuration of Caches.
  • Standards Based with a full implementation of JSR107 JCACHE API.
  • Extensible:
    • Listeners may be plugged in.
    • Peer Discovery, Replicators and Listeners may be plugged in.
    • Cache Extensions may be plugged in.
    • Cache Loaders may be plugged in.
    • Cache Exception Handlers may be plugged in.
  • Application Persistence:
    • Persistent disk store which stores data between VM restarts.
    • Flush to disk on demand.
  • Listeners:
    • CacheManager listeners.
    • Cache event listeners.
  • JMX Enabled.
  • Distributed Caching.
  • Support for replication via RMI or JGroups:
    • Peer Discovery.
    • Reliable Delivery.
    • Synchronous Or Asynchronous Replication.
    • Copy Or Invalidate Replication.
    • Transparent Replication.
    • Extensible.
    • Bootstrapping from Peers.
  • Cache Server:
    • RESTful cache server.
    • SOAP cache server.
    • JCache style caching.
    • Comes as a WAR or as a complete server.
  • Java EE and Applied Caching:
    • Blocking Cache to avoid duplicate processing for concurrent operations.
    • SelfPopulating Cache for pull through caching of expensive operations.
    • Java EE Gzipping Servlet Filter.
    • Cacheable Commands.
    • Works with Hibernate.
    • Works with Google App Engine.
    • Transactional support through JTA.
  • High Quality:
    • High Test Coverage.
    • Automated Load, Limit and Performance System Tests.
    • Specific Concurrency Testing.
    • Production tested.
    • Fully documented.
    • Trusted by Popular Frameworks.
    • Conservative Commit policy.
    • Full public information on the history of every bug.
    • Responsiveness to serious bugs.

Support: Documentation
Developer: Terracotta, Inc
License: Apache License 2.0

Ehcache is written in Java. Learn Java with our recommended free books and free tutorials.

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