20 July 2010: Ehcache 2.2 and Enterprise Ehcache 2.2 released

Ehcache 2.2 and Enterprise Ehcache 2.2 have been released. The new capabilities in this latest version of Ehcache are focused on improving the scalability, visibility, and management of the Terracotta-backed distributed cache for Ehcache. Enterprise Ehcache 2.2 enables customers to store over a terabyte of data and hundreds of millions of entries in a single cache. Designed to be a snap-in capability, this new terabyte-scale storage option can be turned on with a simple change to the ehcache configuration file.

New in Ehcache 2.2:

• Visibility and Control—Simplified and improved Ehcahe management console for distributed caches.
• New Common Runtime Library—Reduces memory usage and network connections and provides new common developer constructs; it also exposes an API that programmers can use alongside the Ehcache API to perform complex inter-process coordination tasks across multiple machines with just a few lines of code.

New in Enterprise Ehcache 2.2:

• Scale and Performance—New storage option for Ehcache that supports terabyte scale, radically decreases memory usage and increases the addressable cache size tenfold.
• Authentication and Authorization—Added Java Authentication and Authorization Service (JAAS) support provides LDAP authentication support for tight integration to corporate user management systems.

17 May 2010: Ehcache Monitor 1.0 released

This add-on tool for Ehcache provides enterprise-class monitoring and management capabilities for use in both development and production. It is intended to help understand and tune cache usage, detect errors, and provide an easy to use access point to integrate with production management systems. It also provides administrative functionality such as the ability to forcefully remove items from caches.

Note: Ehcache Monitor is not open source. It is available free for development use but must be licensed for production use. A production license is provided as part of the commercial versions of Ehcache, either DX, EX or FX.

Simply install the Monitor on an Operations server, add the Monitor Probe jar to your app, add a few lines of config in ehcache.xml and your done.

See the documentation for Ehcache Monitor, including a usage video from Ehcache founder Greg Luck, or download here.

17 May 2010: Ehcache 2.1.0 and new ehcache-nonstopcache and ehcache-unlockedreadsview released

Ehcache 2.1.0 rounds out Ehcache 2.0. JTA support has been added for standalone ehcache. JTA for Hibernate has been added which now means Ehcache supports all Hibernate strategies. ehcache-nonstopcache adds a new API with support for timeouts on Cache Operations and configurable actions on disconnection from a cluster. ehcache-unlockedreadsview adds support for a coherent cache to expose an unlocked view at the same time, for rapid response.

The maturity and depth of the integration between Ehcache and Terracotta server is now such that, for distributed caching, the two best way to use each technology is with each other. With that in mind Terracotta server is now distributed in the Ehcache download. Servers at dev time need to fit into the development process. Terracotta has a tc-maven-plugin that works as well and simply as the famed Jetty plugin. Instructions on its use are included in the download.

For more information on this release see Steve Harris's excellent blog article on it.

22 April 2010: Ehcache 2.1.0-beta, and new ehcache-nonstopcache and ehcache-unlockedreadsview betas released

Ehcache 2.1.0 will rounds out Ehcache 2.0. JTA support has been added for standalone ehcache. JTA for Hibernate has been added which now means Ehcache supports all Hibernate strategies. ehcache-nonstopcache adds a new API with support for timeouts on Cache Operations and configurable actions on disconnection from a cluster. ehcache-unlockedreadsview adds support for a coherent cache to expose an unlocked view at the same time, for rapid response.

The maturity and depth of the integration between Ehcache and Terracotta server is now such that, for distributed caching, the two best way to use each technology is with each other. With that in mind Terracotta server is now distributed in the Ehcache download. Servers at dev time need to fit into the development process. Terracotta has a tc-maven-plugin that works as well and simply as the famed Jetty plugin. Instructions on its use are included in the download.

Finally, the Architecture page has been updated with rich flash animations showing how Ehcache and Terracotta work together and illustrating the major APIs. Feedback on this material to gluck AT terracottatech.com is appreciated.

10 April 2010: Ehcache 2.0.1 and Ehcache Web 2.0.1 released

New bug fix versions of ehcache and ehcache-web are available.

23 March 2010: Ehcache Server 1.0 released

Ehcache Server and Standalone Server have been released to Sourceforge Downloads. The server provides RESTful and SOAP APIs to Ehcache. It is available as a WAR which works with all app servers, or standalone using Glassfish V3 embedded.

New in this release is integration with Terracotta Server Array for coherent, scalable and HA caching. Also the Ehcache core has been upgraded to version 2.0, Jersey to 1.1.5, Metro to 2.1.5 and for standalone, Glassfish to V3 embedded.

This release has been performance tested against memcache and gives comparable over-the-network performance. Coupled with the simplicity of coding in your HTTP client of choice in your programming language of choice and easily getting the benefits of Terracotta Server Array backing it, this is a killer combination.

See the Ehcache Server documentation to get started or download it now.

Due to an issue with external repository handling, these have not yet been released to Maven. Sonatype are completing a project for Sun whereby they will be adding their artifacts to the Central repository. This is expected to be completed this week or next, so the Maven artifacts will be released then.

8 March 2010: Ehcache 2.0 released

Ehcache 2.0 provides a new Hibernate 3.3 SPI caching plugin, JTA, Write-Behind, a new ultra-fast Bulk Loading API for clustered caches. and dynamic runtime cache reconfiguration.

Ehcache 2.0 is fully backward compatible with earlier versions of Ehcache.

The Terracotta Server Array ("TSA") has also been re-engineered to dovetail with Ehcache to provide these features with cluster coherence, high availability and persistence.

This release also introduces some improvements to ehcache which reduce memory use (over 1.6 and 1.7) by the cache and improve the eviction algorithms.

See the changelog for complete details of ehcache-core changes.

To provide an indicator in the documentation on what is new in 2.0, you will this icon: new_in_2.

3 February 2010: Ehcache 2.0 beta released

This is a preview of Ehcache 2.0, aka Project Darwin. Features are as per the GA release.

11 January 2010: ehcache-1.8, ehcache-core-1.7.2 and ehcache-terracotta-1.8

This is a final GA release of ehcache comprising ehcache, ehcache-core and ehcache-terracotta modules.

This release contains some bug fixes to ehcache-core, but the notable change is the upgrade of the ehcache-terracotta module to support Terracotta 3.2. Terracotta 3.2 is dramatically faster than 3.1. See the changelog for complete details of ehcache-core changes.

Note: If you experience different caching ergonomics you can enable the LinkedHashMap based engine with java -Dnet.sf.ehcache.use.classic.lru=true. This is the engine enabled up to 1.5.

22 December 2009: Ehcache OpenJPA plugin 0.2 released

Back in July we released the first plugin for OpenJPA. This version brings OpenJPA more into line with the Hibernate plugin and more fully implements the OpenJPA API. As with all of the modules we are releasing, this version adds the option, when paired with the ehcache-terracotta module of clustering via Terracotta.

See ehcache-openjpa.

15 December 2009: Ehcache Monitor Beta 2 released

We have had hundreds of people sign up for an play with beta 1 of the Ehcache Monitor. We have fixed over 15 bugs in Beta 1 and have released Beta 2. We have also created a roadmap for beta 3 which will add significant new features. See Ehcache Monitor Beta.

13 December 2009: Ehcache Web 2.0 released

Ehcache Web has been part of Ehcache for years. In this release the web caching is split into its own module. The web module provides a filter based PageCachingFilter and PageFragmentCachingFilter which can be used with any Java web framework for caching of HTML, SOAP, REST, JSON, XML and other types.

New in this release is integration with ehcache-terracotta 1.7.1 and higher, so that coherent, terabyte scale web caches can be created.

See ehcache-web.

9 December 2009: Ehcache welcomes Grails as a first-class supported framework

Grails 1.2RC1 and higher use Ehcache as the default Hibernate second level cache. However earlier versions of Grails ship with the Ehcache library and are very simple to enable.

A new Grails Chapter shows how to configure Grails to use Ehcache and how to tune it for production use.

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