EHCache - Where to cache other than Http Session?

Whats it?

Ehcache is a widely used java distributed cache for general purpose caching, Java EE and light-weight containers.

It features memory and disk stores, replicate by copy and invalidate, listeners, cache loaders, cache extensions, cache exception handlers, a gzip caching servlet filter and much more.

Ehcache is available under an Apache open source licence and is actively developed, maintained and supported.

Who is using?

Alfresco An Enterprise Content Management system
Cocoon. A web development framework.
Hibernate. An O/R mapping tool.
Spring. An IOC framework from Rod Johnson.
JPOX. A Java Persistent Objects frameworkd and JDO implementation.
Jofti. A cached object indexing and searching system.
Acegi. A security system for Spring.
Kosmos. Kosmos stands for Komposite Open Source Monitoring Suite..
Tudu Lists. Online list management.
Lutece. Lutece is an Open Source Java/ XML portal.

How to use?

//Get CacheManager through config
URL url = getClass().getResource("/anotherconfigurationname.xml");
CacheManager manager = new CacheManager(url);

CacheManager manager = new CacheManager("src/config/ehcache.xml");

//GetSingleton CacheManager
CacheManager singletonManager = CacheManager.create();

//Add Cache
singletonManager.addCache("testCache");
Cache test = singletonManager.getCache("testCache");

//Add Elements
Element element = new Element("key1", "value1");
test.put(element);

//Remove Cache
singletonManager.removeCache("testCache");

//Shutdown
CacheManager.getInstance().shutdown();
manager.shutdown();



More Info :

http://ehcache.sourceforge.net/