Examples of net.sf.ehcache.Cache

net.sf.ehcache.Cache
Cache is the central class in ehcache. Caches have {@link Element}s and are managed by the {@link CacheManager}. The Cache performs logical actions. It delegates physical implementations to its {@link net.sf.ehcache.store.Store}s.
A reference to a Cache can be obtained through the {@link CacheManager}. A Cache thus obtained is guaranteed to have status {@link Status#STATUS_ALIVE}. This status is checked for any method which throws {@link IllegalStateException} and the same thrown if it is not alive. This would normallyhappen if a call is made after {@link CacheManager#shutdown} is invoked.
Cache is threadsafe.
Statistics on cache usage are collected and made available through the {@link #getStatistics()} methods.
Various decorators are available for Cache, such as BlockingCache, SelfPopulatingCache and the dynamic proxy ExceptionHandlingDynamicCacheProxy. See each class for details. @author Greg Luck @version $Id: Cache.java 793 2008-10-07 07:28:03Z gregluck $

      final CacheManager manager = getCacheManager();
      synchronized(manager)
      {
        if (manager.cacheExists(BUNDLES_CACHE_NAME) == false)
        {
          final Cache libloaderCache = new Cache(BUNDLES_CACHE_NAME,   // cache name
                                                 500,         // maxElementsInMemory
                                                 false,       // overflowToDisk
                                                 false,       // eternal
                                                 600,         // timeToLiveSeconds
                                                 600,         // timeToIdleSeconds

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      final CacheManager manager = getCacheManager();
      synchronized(manager)
      {
        if (manager.cacheExists(FACTORY_CACHE_NAME) == false)
        {
          final Cache libloaderCache = new Cache(FACTORY_CACHE_NAME,   // cache name
                                                 500,         // maxElementsInMemory
                                                 false,       // overflowToDisk
                                                 false,       // eternal
                                                 600,         // timeToLiveSeconds
                                                 600,         // timeToIdleSeconds

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    LogManager.getLogger(FsDirectory.class).setLevel(Level.WARN);
    CacheManager mgr = CacheManager.create();
    synchronized(mgr) {
      cache = mgr.getCache("dfsin");
      if (cache == null) {
        cache = new Cache("dfsin", 2000, MemoryStoreEvictionPolicy.LFU,
                true, diskCacheDir, false, 1800, 600, false, 300, null);
        mgr.addCache(cache);
        cache = mgr.getCache("dfsin");
        LOG.info("Created cache: " + cache.toString());
      }

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        if (value != null) {
            final CacheManager cm = CacheManager.create();
            final int maxElements = NumbersUtil.parseInt(value, 0);
            final int live = NumbersUtil.parseInt((String)params.get("cache.time.to.live"), 300);
            final int idle = NumbersUtil.parseInt((String)params.get("cache.time.to.idle"), 300);
            _cache = new Cache(getName(), maxElements, false, live == -1, live == -1 ? Integer.MAX_VALUE : live, idle);
            cm.addCache(_cache);
            s_logger.info("Cache created: " + _cache.toString());
        } else {
            _cache = null;
        }

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            String cachesize = _configDao.getValue(Config.ApiLimitCacheSize.key());
            if ( cachesize != null ){
                maxElements = Integer.parseInt(cachesize);
            }
            CacheManager cm = CacheManager.create();
            Cache cache = new Cache("api-limit-cache", maxElements, false, false, timeToLive, timeToLive);
            cm.addCache(cache);
            s_logger.info("Limit Cache created with timeToLive=" + timeToLive + ", maxAllowed=" + maxAllowed + ", maxElements=" + maxElements );
            cacheStore.setCache(cache);
            _store = cacheStore;

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     * Initialize the CacheManager and created the Cache.
     */
    public void initialize() throws Exception {
        URL configFileURL = Thread.currentThread().getContextClassLoader().getResource(CONFIG_FILE);
        this.cacheManager = CacheManager.create(configFileURL);
        this.cache = new Cache(this.cacheName, this.maxObjects, this.overflowToDisk, true, 0, 0, true, 120);
        this.cacheManager.addCache(this.cache);
        this.storeJanitor.register(this);
    }

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                LOG.trace("Cache " + config.getCacheName() + " currently contains "
                        + cacheManager.getCache(config.getCacheName()).getSize() + " elements");
            }
            cache = cacheManager.getCache(config.getCacheName());
        } else {
            cache = new Cache(config.getCacheName(),
                    config.getMaxElementsInMemory(),
                    config.getMemoryStoreEvictionPolicy(),
                    config.isOverflowToDisk(),
                    config.getDiskStorePath(),
                    config.isEternal(),

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        if (cacheManager.cacheExists(config.getCacheName())) {
            cache = cacheManager.getCache(config.getCacheName());
            cache.getCacheEventNotificationService().registerListener(cacheEventListener);
        } else {
            cache = new Cache(config.getCacheName(), 
                    config.getMaxElementsInMemory(),
                    config.getMemoryStoreEvictionPolicy(), 
                    config.isOverflowToDisk(), 
                    config.getDiskStorePath(), 
                    config.isEternal(),

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            } else {
                cacheManager = CacheManager.create(configFileURL);
            }
        }
        if (!cacheManager.cacheExists(key)) {
            cache = new Cache(key, 50000, true, false, DEFAULT_TTL, DEFAULT_TTL);
            cacheManager.addCache(cache);
        } else {
            cache = cacheManager.getCache(key);
        }
    }

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            }
        }
        
        if (!cacheManager.cacheExists(key)) {
            // Cannot overflow to disk as SecurityToken Elements can't be serialized
            cache = new Cache(key, MAX_ELEMENTS, false, false, DEFAULT_TTL, DEFAULT_TTL);
            cacheManager.addCache(cache);
        } else {
            cache = cacheManager.getCache(key);
        }
    }

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