纯Java的进程内缓存框架-EhCache

Java缓存框架 EhCache  EhCache 是一个纯Java的进程内缓存框架，具有快速、精干等特点，是Hibernate中默认的CacheProvider。

 

JAVA实例：

package test.ehcache;import net.sf.ehcache.Cache;import net.sf.ehcache.CacheManager;import net.sf.ehcache.Element;public class TestCache {public static void main(String[] args) {/** * Create a singleton CacheManager using defaults, then list caches. */CacheManager.create();String[] cacheNames = CacheManager.getInstance().getCacheNames();System.out.println(cacheNames.length);/** * Create one CacheManager with a configuration, and list the caches in each. */CacheManager manager2 = CacheManager.newInstance("ehcache1.xml");String[] cacheNames2 = manager2.getCacheNames();System.out.println(cacheNames2.length);/** * Create a Cache and add it to the CacheManager, then use it.  * Note that Caches are not usable until they have been added to a CacheManager. */CacheManager singletonManager = CacheManager.create();Cache memoryOnlyCache = new Cache("testCache", 5000, false, false, 5, 2);singletonManager.addCache(memoryOnlyCache);Cache cache = singletonManager.getCache("testCache");Element element = new Element("key1","value1");cache.put(element);Element value = cache.get("key1");System.out.println(value.getObjectValue());//value1System.out.println(value.toString());//[ key = key1, value=value1, version=1, hitCount=1, CreationTime = 1359130974484, LastAccessTime = 1359130974500 ]}}

配置文件ehcache1.xml：

<?xml version="1.0" encoding="UTF-8"?><ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:noNamespaceSchemaLocation="ehcache.xsd" updateCheck="true"monitoring="autodetect" dynamicConfig="true"><diskStore path="user.dir" /><defaultCache name="default-cache"maxElementsInMemory="10000" maxElementsOnDisk="0"eternal="false" overflowToDisk="true" timeToIdleSeconds="1200"timeToLiveSeconds="1200"></defaultCache><cache name="my-cache"  maxElementsInMemory="10000"maxElementsOnDisk="0" eternal="false"  overflowToDisk="true"diskSpoolBufferSizeMB="20" timeToIdleSeconds="300" timeToLiveSeconds="600"memoryStoreEvictionPolicy="FIFO"></cache></ehcache><!--Default Cache configuration. These will applied to caches programmatically created through the CacheManager.      The following attributes are required for defaultCache:        maxInMemory       - Sets the maximum number of objects that will be created in memory              eternal           - Sets whether elements are eternal. If eternal,  timeouts are ignored and the element                            is never expired.                                  timeToIdleSeconds - Sets the time to idle for an element before it expires. Is only used                            if the element is not eternal. Idle time is now - last accessed time        timeToLiveSeconds - Sets the time to live for an element before it expires. Is only used                            if the element is not eternal. TTL is now - creation time        overflowToDisk    - Sets whether elements can overflow to disk when the in-memory cache                            has reached the maxInMemory limit.  -->