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POLightweight Java Object cache API
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copied!<h2>Question</h2> <p>I'm looking for a Java in-memory object caching API. Any recommendations? What solutions have you used in the past?</p> <h2>Current</h2> <p>Right now, I'm just using a Map:</p> <pre><code>Map cache = new HashMap<String, Object>(); cache.put("key", value); </code></pre> <h2>Requirements</h2> <p>I need to extend the cache to include basic features like:</p> <ul> <li>Max size</li> <li>Time to live</li> </ul> <p>However, I don't need more sophisticated features like:</p> <ul> <li>Access from multiple processes (caching server)</li> <li>Persistence (to disk)</li> </ul> <h2>Suggestions</h2> <p>In-Memory caching:</p> <ul> <li><a href="http://guava-libraries.googlecode.com" rel="nofollow noreferrer">Guava</a> CacheBuilder - active development. See this <a href="https://github.com/liubo404/it-ebooks/blob/master/pdf/JavaCachingwithGuava.pdf" rel="nofollow noreferrer">presentation</a>.</li> <li><a href="http://commons.apache.org/collections/apidocs/org/apache/commons/collections/map/LRUMap.html" rel="nofollow noreferrer">LRUMap</a> - Config via API. No TTL. Not purpose built for caching.</li> <li><a href="http://whirlycache.dev.java.net/" rel="nofollow noreferrer">whirlycache</a> - XML config. Mailing list. Last updated 2006.</li> <li><a href="http://cache4j.sourceforge.net/" rel="nofollow noreferrer">cache4j</a> - XML config. Documentation in Russian. Last updated 2006.</li> </ul> <p>Enterprise caching:</p> <ul> <li><a href="http://jakarta.apache.org/jcs" rel="nofollow noreferrer">JCS</a> - Properties config. Extensive documentation.</li> <li><a href="http://ehcache.sourceforge.net" rel="nofollow noreferrer">Ehcache</a> - XML config. Extensive documentation. By far the most popular according to Google hits.</li> </ul>

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