Question

目前，我使用Hhcache将Hibernate配置为使用Ehcache作为二级缓存来运行2次测试（查询项目10000次以查看缓存如何工作），但缓存不起作用。与没有ehcache的测试相比，基准时间没有变化。统计数据显示，即使缓存的大小= 1（查询该项目），它根本没有被击中：

[  name = Location cacheHits = 0 onDiskHits = 0 offHeapHits = 0 inMemoryHits = 0 misses = 0 onDiskMisses = 0 offHeapMisses = 0 inMemoryMisses = 0 size = 1 averageGetTime = 0.0 evictionCount = 0 ]

Hibernate统计信息（sessionFactory.getStatistics（）。getSecondLevelCacheStatistics（“Location”））：

SecondLevelCacheStatistics[hitCount=0,missCount=0,putCount=0,elementCountInMemor‌y=1,elementCountOnDisk=1,sizeInMemory=760]

以下是我的配置：

Maven依赖项：

<dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-ehcache</artifactId>
      <version>4.1.3.Final</version>
    </dependency>
    <dependency>
      <groupId>net.sf.ehcache</groupId>
      <artifactId>ehcache-core</artifactId>
      <version>2.5.2</version>
    </dependency>
    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-core</artifactId>
      <version>4.1.3.Final</version>
    </dependency>

启用了ehcache的Hibernate配置：

    Configuration cfg = new Configuration()
        .addAnnotatedClass(Location.class)
        .setProperty("hibernate.connection.driver_class", dbConfig.getH2JdbcDriverName())
        .setProperty("hibernate.connection.url", dbConfig.getDbUrl())
        .setProperty("hibernate.connection.username", dbConfig.getUserName())
        .setProperty("hibernate.connection.password", dbConfig.getPassword())
        .setProperty("javax.persistence.validation.mode", "NONE")
        .setProperty("hibernate.cache.use_second_level_cache", "true")
        .setProperty("hibernate.cache.use_query_cache", "true")
        .setProperty("hibernate.cache.region.factory_class", "org.hibernate.cache.ehcache.EhCacheRegionFactory");

    sessionFactory = cfg.buildSessionFactory();

Ehcache xml配置：

<ehcache>
<diskStore path="c:/_cached"/>
<cache
    name="org.hibernate.cache.StandardQueryCache"
    maxEntriesLocalHeap="5"
    eternal="false"
    timeToLiveSeconds="120"
    overflowToDisk="true"/>

<cache
    name="org.hibernate.cache.UpdateTimestampsCache"
    maxEntriesLocalHeap="5000"
    eternal="true"
    overflowToDisk="true"/>

<cache
    name="Location"
    maxElementsInMemory="10000"
    eternal="false"
    timeToIdleSeconds="120"
    timeToLiveSeconds="120"
    overflowToDisk="true"
    diskPersistent="false"
    diskExpiryThreadIntervalSeconds="120"
    memoryStoreEvictionPolicy="LRU"/>
<defaultCache 
    maxElementsInMemory="10000"
    eternal="false"
    timeToIdleSeconds="120"
    timeToLiveSeconds="120"
    overflowToDisk="true"
    diskPersistent="false"
    diskExpiryThreadIntervalSeconds="120"
    memoryStoreEvictionPolicy="LRU"/>
</ehcache>

数据库类：

import org.hibernate.annotations.*;

import javax.persistence.*;
import javax.persistence.Entity;
import javax.persistence.Table;
import java.io.Serializable;

@Entity
@Table(name = "Location")
@org.hibernate.annotations.Cache(region = "Location", usage = CacheConcurrencyStrategy.READ_WRITE)
public class Location implements Serializable {
    @Id
    @GeneratedValue
    @Column(name = "Id")
    private int id;

    @Column(name = "Name", nullable = false)
    private String name;

    @Column(name = "Description")
    private String description;

    @Column(name = "Position", nullable = false)
    private Geometry position;

    //getters and setters are ommited 
}

测试代码：

@Test
public void testQueryCache(){
    int size = 10000;
    Location lo = null;
    long startTime = System.currentTimeMillis();
    Session currentSession = sessionFactory.openSession();
    for (int i = 0; i< size ; i++){
        Transaction transaction = currentSession.beginTransaction();
        lo = (Location) currentSession.createCriteria(Location.class)
            .add(Restrictions.eq("id", 86))
            .setCacheable(true)
            .uniqueResult();
        transaction.commit();
    }
    long stopTime = System.currentTimeMillis();
    Assert.assertNotNull(lo);
    System.out.println(String.format("\t %d ms", stopTime - startTime));

    Cache cache = CacheManager.getInstance().getCache("Location");
    System.out.println(cache.getStatistics().toString());

    SecondLevelCacheStatistics statistics = sessionFactory.getStatistics().getSecondLevelCacheStatistics("Location");
    System.out.println(statistics.toString());
}

@Test
public void testEhcacheWithGet(){
    int size = 10000;
    Location lo = null;
    long startTime = System.currentTimeMillis();
    for (int i = 0; i< size ; i++){
        Session currentSession = sessionFactory.openSession();
        Transaction transaction = currentSession.beginTransaction();
            lo = (Location) currentSession.get(Location.class, 86);
        transaction.commit();
        currentSession.close();
    }

    long stopTime = System.currentTimeMillis();
    Assert.assertNotNull(lo);
    System.out.println(String.format("\t %d ms", stopTime - startTime));

    Cache cache = CacheManager.getInstance().getCache("Location");
    System.out.println(cache.getStatistics().toString());

    SecondLevelCacheStatistics statistics = sessionFactory.getStatistics().getSecondLevelCacheStatistics("Location");
    System.out.println(statistics.toString());
}

@testQueryCache的控制台消息：

2012-06-15 15:07:03,953 DEBUG [org.jboss.logging] - Logging Provider: org.jboss.logging.Log4jLoggerProvider 
2012-06-15 15:07:04,917 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from ehcache.xml found in the classpath: file:/***PATH***/ehcache.xml 
2012-06-15 15:07:04,920 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from URL: file:/***PATH***/ehcache.xml 
2012-06-15 15:07:04,921 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from InputStream 
2012-06-15 15:07:05,085 DEBUG [net.sf.ehcache.config.DiskStoreConfiguration] - Disk Store Path: c:/_cached 
2012-06-15 15:07:05,125 DEBUG [net.sf.ehcache.util.PropertyUtil] - propertiesString is null. 
2012-06-15 15:07:05,139 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - No CacheManagerEventListenerFactory class specified. Skipping... 
2012-06-15 15:07:05,186 DEBUG [net.sf.ehcache.Cache] - No BootstrapCacheLoaderFactory class specified. Skipping... 
2012-06-15 15:07:05,186 DEBUG [net.sf.ehcache.Cache] - CacheWriter factory not configured. Skipping... 
2012-06-15 15:07:05,188 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - No CacheExceptionHandlerFactory class specified. Skipping... 
2012-06-15 15:07:05,190 DEBUG [net.sf.ehcache.Cache] - No BootstrapCacheLoaderFactory class specified. Skipping... 
2012-06-15 15:07:05,191 DEBUG [net.sf.ehcache.Cache] - CacheWriter factory not configured. Skipping... 
2012-06-15 15:07:05,191 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - No CacheExceptionHandlerFactory class specified. Skipping... 
2012-06-15 15:07:05,191 DEBUG [net.sf.ehcache.Cache] - No BootstrapCacheLoaderFactory class specified. Skipping... 
2012-06-15 15:07:05,192 DEBUG [net.sf.ehcache.Cache] - CacheWriter factory not configured. Skipping... 
2012-06-15 15:07:05,192 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - No CacheExceptionHandlerFactory class specified. Skipping... 
2012-06-15 15:07:05,192 DEBUG [net.sf.ehcache.Cache] - No BootstrapCacheLoaderFactory class specified. Skipping... 
2012-06-15 15:07:05,193 DEBUG [net.sf.ehcache.Cache] - CacheWriter factory not configured. Skipping... 
2012-06-15 15:07:05,193 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - No CacheExceptionHandlerFactory class specified. Skipping... 
2012-06-15 15:07:05,222 DEBUG [net.sf.ehcache.store.MemoryStore] - Initialized net.sf.ehcache.store.MemoryStore for org.hibernate.cache.UpdateTimestampsCache 
2012-06-15 15:07:05,230 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.UpdateTimestampsCache.index 
2012-06-15 15:07:05,242 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Matching data file missing (or empty) for index file. Deleting index file c:\_cached\org.hibernate.cache.UpdateTimestampsCache.index 
2012-06-15 15:07:05,243 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.UpdateTimestampsCache.index 
2012-06-15 15:07:05,252 DEBUG [net.sf.ehcache.Cache] - Initialised cache: org.hibernate.cache.UpdateTimestampsCache 
2012-06-15 15:07:05,252 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured. Skipping for 'org.hibernate.cache.UpdateTimestampsCache'. 
2012-06-15 15:07:05,253 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'org.hibernate.cache.UpdateTimestampsCache'. 
2012-06-15 15:07:05,253 DEBUG [net.sf.ehcache.store.MemoryStore] - Initialized net.sf.ehcache.store.MemoryStore for Location 
2012-06-15 15:07:05,258 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file Location.index 
2012-06-15 15:07:05,259 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Matching data file missing (or empty) for index file. Deleting index file c:\_cached\Location.index 
2012-06-15 15:07:05,259 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file Location.index 
2012-06-15 15:07:05,260 DEBUG [net.sf.ehcache.Cache] - Initialised cache: Location 
2012-06-15 15:07:05,260 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured. Skipping for 'Location'. 
2012-06-15 15:07:05,263 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'Location'. 
2012-06-15 15:07:05,264 DEBUG [net.sf.ehcache.store.MemoryStore] - Initialized net.sf.ehcache.store.MemoryStore for org.hibernate.cache.StandardQueryCache 
2012-06-15 15:07:05,265 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.StandardQueryCache.index 
2012-06-15 15:07:05,266 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Matching data file missing (or empty) for index file. Deleting index file c:\_cached\org.hibernate.cache.StandardQueryCache.index 
2012-06-15 15:07:05,267 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.StandardQueryCache.index 
2012-06-15 15:07:05,268 DEBUG [net.sf.ehcache.Cache] - Initialised cache: org.hibernate.cache.StandardQueryCache 
2012-06-15 15:07:05,268 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured. Skipping for 'org.hibernate.cache.StandardQueryCache'. 
2012-06-15 15:07:05,272 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'org.hibernate.cache.StandardQueryCache'. 
2012-06-15 15:07:05,482 WARN [org.hibernate.cache.ehcache.AbstractEhcacheRegionFactory] - HHH020003: Could not find a specific ehcache configuration for cache named [org.hibernate.cache.spi.UpdateTimestampsCache]; using defaults. 
2012-06-15 15:07:05,483 DEBUG [net.sf.ehcache.store.MemoryStore] - Initialized net.sf.ehcache.store.MemoryStore for org.hibernate.cache.spi.UpdateTimestampsCache 
2012-06-15 15:07:05,484 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.spi.UpdateTimestampsCache.index 
2012-06-15 15:07:05,486 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Matching data file missing (or empty) for index file. Deleting index file c:\_cached\org.hibernate.cache.spi.UpdateTimestampsCache.index 
2012-06-15 15:07:05,487 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.spi.UpdateTimestampsCache.index 
2012-06-15 15:07:05,488 DEBUG [net.sf.ehcache.Cache] - Initialised cache: org.hibernate.cache.spi.UpdateTimestampsCache 
2012-06-15 15:07:05,488 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'org.hibernate.cache.spi.UpdateTimestampsCache'. 
2012-06-15 15:07:05,491 WARN [org.hibernate.cache.ehcache.AbstractEhcacheRegionFactory] - HHH020003: Could not find a specific ehcache configuration for cache named [org.hibernate.cache.internal.StandardQueryCache]; using defaults. 
2012-06-15 15:07:05,492 DEBUG [net.sf.ehcache.store.MemoryStore] - Initialized net.sf.ehcache.store.MemoryStore for org.hibernate.cache.internal.StandardQueryCache 
2012-06-15 15:07:05,493 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.internal.StandardQueryCache.index 
2012-06-15 15:07:05,495 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Matching data file missing (or empty) for index file. Deleting index file c:\_cached\org.hibernate.cache.internal.StandardQueryCache.index 
2012-06-15 15:07:05,495 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.internal.StandardQueryCache.index 
2012-06-15 15:07:05,496 DEBUG [net.sf.ehcache.Cache] - Initialised cache: org.hibernate.cache.internal.StandardQueryCache 
2012-06-15 15:07:05,497 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'org.hibernate.cache.internal.StandardQueryCache'. 
2012-06-15 15:07:05,772 DEBUG [net.sf.ehcache.store.disk.Segment] - put added 0 on heap 
2012-06-15 15:07:05,783 DEBUG [net.sf.ehcache.store.disk.Segment] - put added 0 on heap 
2012-06-15 15:07:05,794 DEBUG [net.sf.ehcache.store.disk.Segment] - fault removed 0 from heap 
2012-06-15 15:07:05,794 DEBUG [net.sf.ehcache.store.disk.Segment] - fault added 0 on disk 
2012-06-15 15:07:05,795 DEBUG [net.sf.ehcache.store.disk.Segment] - fault removed 0 from heap 
2012-06-15 15:07:05,795 DEBUG [net.sf.ehcache.store.disk.Segment] - fault added 0 on disk 
2012-06-15 15:07:06,190 DEBUG [net.sf.ehcache.util.UpdateChecker] - Checking for update... 
     2586 ms
2012-06-15 15:07:08,152 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from ehcache.xml found in the classpath: file:/***PATH***/ehcache.xml 
2012-06-15 15:07:08,153 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from URL: file:/***PATH***/ehcache.xml 
2012-06-15 15:07:08,155 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from InputStream 
2012-06-15 15:07:08,159 DEBUG [net.sf.ehcache.config.DiskStoreConfiguration] - Disk Store Path: c:/_cached 
[  name = Location cacheHits = 0 onDiskHits = 0 offHeapHits = 0 inMemoryHits = 0 misses = 0 onDiskMisses = 0 offHeapMisses = 0 inMemoryMisses = 0 size = 1 averageGetTime = 0.0 evictionCount = 0 ]
2012-06-15 15:07:08,174 INFO [net.sf.ehcache.pool.sizeof.AgentLoader] - Located valid 'tools.jar' at 'C:\Program Files (x86)\Java\jdk1.6.0_31\jre\..\lib\tools.jar' 
2012-06-15 15:07:08,184 INFO [net.sf.ehcache.pool.sizeof.JvmInformation] - Detected JVM data model settings of: 32-Bit HotSpot JVM 
2012-06-15 15:07:08,240 INFO [net.sf.ehcache.pool.sizeof.AgentLoader] - Extracted agent jar to temporary file C:\Users\****\AppData\Local\Temp\ehcache-sizeof-agent6609755822520222855.jar 
2012-06-15 15:07:08,241 INFO [net.sf.ehcache.pool.sizeof.AgentLoader] - Trying to load agent @ C:\Users\****\AppData\Local\Temp\ehcache-sizeof-agent6609755822520222855.jar 
2012-06-15 15:07:08,247 INFO [net.sf.ehcache.pool.impl.DefaultSizeOfEngine] - using Agent sizeof engine 
SecondLevelCacheStatistics[hitCount=0,missCount=0,putCount=0,elementCountInMemory=1,elementCountOnDisk=1,sizeInMemory=760]

@testEhcacheWithGet的控制台消息：

2012-06-15 15:09:26,046 DEBUG [org.jboss.logging] - Logging Provider: org.jboss.logging.Log4jLoggerProvider 
2012-06-15 15:09:26,993 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from ehcache.xml found in the classpath: file:/***PATH***/ehcache.xml 
2012-06-15 15:09:26,995 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from URL: file:/***PATH***/ehcache.xml 
2012-06-15 15:09:26,997 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from InputStream 
2012-06-15 15:09:27,156 DEBUG [net.sf.ehcache.config.DiskStoreConfiguration] - Disk Store Path: c:/_cached 
2012-06-15 15:09:27,188 DEBUG [net.sf.ehcache.util.PropertyUtil] - propertiesString is null. 
2012-06-15 15:09:27,200 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - No CacheManagerEventListenerFactory class specified. Skipping... 
2012-06-15 15:09:27,247 DEBUG [net.sf.ehcache.Cache] - No BootstrapCacheLoaderFactory class specified. Skipping... 
2012-06-15 15:09:27,248 DEBUG [net.sf.ehcache.Cache] - CacheWriter factory not configured. Skipping... 
2012-06-15 15:09:27,249 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - No CacheExceptionHandlerFactory class specified. Skipping... 
2012-06-15 15:09:27,251 DEBUG [net.sf.ehcache.Cache] - No BootstrapCacheLoaderFactory class specified. Skipping... 
2012-06-15 15:09:27,252 DEBUG [net.sf.ehcache.Cache] - CacheWriter factory not configured. Skipping... 
2012-06-15 15:09:27,252 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - No CacheExceptionHandlerFactory class specified. Skipping... 
2012-06-15 15:09:27,252 DEBUG [net.sf.ehcache.Cache] - No BootstrapCacheLoaderFactory class specified. Skipping... 
2012-06-15 15:09:27,252 DEBUG [net.sf.ehcache.Cache] - CacheWriter factory not configured. Skipping... 
2012-06-15 15:09:27,256 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - No CacheExceptionHandlerFactory class specified. Skipping... 
2012-06-15 15:09:27,257 DEBUG [net.sf.ehcache.Cache] - No BootstrapCacheLoaderFactory class specified. Skipping... 
2012-06-15 15:09:27,257 DEBUG [net.sf.ehcache.Cache] - CacheWriter factory not configured. Skipping... 
2012-06-15 15:09:27,257 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - No CacheExceptionHandlerFactory class specified. Skipping... 
2012-06-15 15:09:27,285 DEBUG [net.sf.ehcache.store.MemoryStore] - Initialized net.sf.ehcache.store.MemoryStore for org.hibernate.cache.StandardQueryCache 
2012-06-15 15:09:27,292 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.StandardQueryCache.index 
2012-06-15 15:09:27,304 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Matching data file missing (or empty) for index file. Deleting index file c:\_cached\org.hibernate.cache.StandardQueryCache.index 
2012-06-15 15:09:27,305 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.StandardQueryCache.index 
2012-06-15 15:09:27,314 DEBUG [net.sf.ehcache.Cache] - Initialised cache: org.hibernate.cache.StandardQueryCache 
2012-06-15 15:09:27,314 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured. Skipping for 'org.hibernate.cache.StandardQueryCache'. 
2012-06-15 15:09:27,314 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'org.hibernate.cache.StandardQueryCache'. 
2012-06-15 15:09:27,316 DEBUG [net.sf.ehcache.store.MemoryStore] - Initialized net.sf.ehcache.store.MemoryStore for Location 
2012-06-15 15:09:27,318 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file Location.index 
2012-06-15 15:09:27,319 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Matching data file missing (or empty) for index file. Deleting index file c:\_cached\Location.index 
2012-06-15 15:09:27,319 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file Location.index 
2012-06-15 15:09:27,320 DEBUG [net.sf.ehcache.Cache] - Initialised cache: Location 
2012-06-15 15:09:27,320 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured. Skipping for 'Location'. 
2012-06-15 15:09:27,323 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'Location'. 
2012-06-15 15:09:27,324 DEBUG [net.sf.ehcache.store.MemoryStore] - Initialized net.sf.ehcache.store.MemoryStore for org.hibernate.cache.UpdateTimestampsCache 
2012-06-15 15:09:27,325 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.UpdateTimestampsCache.index 
2012-06-15 15:09:27,326 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Matching data file missing (or empty) for index file. Deleting index file c:\_cached\org.hibernate.cache.UpdateTimestampsCache.index 
2012-06-15 15:09:27,327 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.UpdateTimestampsCache.index 
2012-06-15 15:09:27,328 DEBUG [net.sf.ehcache.Cache] - Initialised cache: org.hibernate.cache.UpdateTimestampsCache 
2012-06-15 15:09:27,328 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured. Skipping for 'org.hibernate.cache.UpdateTimestampsCache'. 
2012-06-15 15:09:27,328 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'org.hibernate.cache.UpdateTimestampsCache'. 
2012-06-15 15:09:27,530 WARN [org.hibernate.cache.ehcache.AbstractEhcacheRegionFactory] - HHH020003: Could not find a specific ehcache configuration for cache named [org.hibernate.cache.spi.UpdateTimestampsCache]; using defaults. 
2012-06-15 15:09:27,531 DEBUG [net.sf.ehcache.store.MemoryStore] - Initialized net.sf.ehcache.store.MemoryStore for org.hibernate.cache.spi.UpdateTimestampsCache 
2012-06-15 15:09:27,533 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.spi.UpdateTimestampsCache.index 
2012-06-15 15:09:27,534 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Matching data file missing (or empty) for index file. Deleting index file c:\_cached\org.hibernate.cache.spi.UpdateTimestampsCache.index 
2012-06-15 15:09:27,534 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.spi.UpdateTimestampsCache.index 
2012-06-15 15:09:27,538 DEBUG [net.sf.ehcache.Cache] - Initialised cache: org.hibernate.cache.spi.UpdateTimestampsCache 
2012-06-15 15:09:27,539 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'org.hibernate.cache.spi.UpdateTimestampsCache'. 
2012-06-15 15:09:27,544 WARN [org.hibernate.cache.ehcache.AbstractEhcacheRegionFactory] - HHH020003: Could not find a specific ehcache configuration for cache named [org.hibernate.cache.internal.StandardQueryCache]; using defaults. 
2012-06-15 15:09:27,545 DEBUG [net.sf.ehcache.store.MemoryStore] - Initialized net.sf.ehcache.store.MemoryStore for org.hibernate.cache.internal.StandardQueryCache 
2012-06-15 15:09:27,546 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.internal.StandardQueryCache.index 
2012-06-15 15:09:27,548 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Matching data file missing (or empty) for index file. Deleting index file c:\_cached\org.hibernate.cache.internal.StandardQueryCache.index 
2012-06-15 15:09:27,548 DEBUG [net.sf.ehcache.store.disk.DiskStorageFactory] - Failed to delete file org.hibernate.cache.internal.StandardQueryCache.index 
2012-06-15 15:09:27,549 DEBUG [net.sf.ehcache.Cache] - Initialised cache: org.hibernate.cache.internal.StandardQueryCache 
2012-06-15 15:09:27,549 DEBUG [net.sf.ehcache.config.ConfigurationHelper] - CacheDecoratorFactory not configured for defaultCache. Skipping for 'org.hibernate.cache.internal.StandardQueryCache'. 
2012-06-15 15:09:27,835 DEBUG [net.sf.ehcache.store.disk.Segment] - put added 0 on heap 
2012-06-15 15:09:27,869 DEBUG [net.sf.ehcache.store.disk.Segment] - fault removed 0 from heap 
2012-06-15 15:09:27,870 DEBUG [net.sf.ehcache.store.disk.Segment] - fault added 0 on disk 
2012-06-15 15:09:28,251 DEBUG [net.sf.ehcache.util.UpdateChecker] - Checking for update... 
     4283 ms
2012-06-15 15:09:31,910 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from ehcache.xml found in the classpath: file:/***PATH***/ehcache.xml 
2012-06-15 15:09:31,911 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from URL: file:/***PATH***/ehcache.xml 
2012-06-15 15:09:31,912 DEBUG [net.sf.ehcache.config.ConfigurationFactory] - Configuring ehcache from InputStream 
2012-06-15 15:09:31,915 DEBUG [net.sf.ehcache.config.DiskStoreConfiguration] - Disk Store Path: c:/_cached 
[  name = Location cacheHits = 0 onDiskHits = 0 offHeapHits = 0 inMemoryHits = 0 misses = 0 onDiskMisses = 0 offHeapMisses = 0 inMemoryMisses = 0 size = 1 averageGetTime = 0.0 evictionCount = 0 ]
2012-06-15 15:09:31,932 INFO [net.sf.ehcache.pool.sizeof.AgentLoader] - Located valid 'tools.jar' at 'C:\Program Files (x86)\Java\jdk1.6.0_31\jre\..\lib\tools.jar' 
2012-06-15 15:09:31,942 INFO [net.sf.ehcache.pool.sizeof.JvmInformation] - Detected JVM data model settings of: 32-Bit HotSpot JVM 
2012-06-15 15:09:32,001 INFO [net.sf.ehcache.pool.sizeof.AgentLoader] - Extracted agent jar to temporary file C:\Users\****\AppData\Local\Temp\ehcache-sizeof-agent6451434728035591561.jar 
2012-06-15 15:09:32,002 INFO [net.sf.ehcache.pool.sizeof.AgentLoader] - Trying to load agent @ C:\Users\****\AppData\Local\Temp\ehcache-sizeof-agent6451434728035591561.jar 
2012-06-15 15:09:32,009 INFO [net.sf.ehcache.pool.impl.DefaultSizeOfEngine] - using Agent sizeof engine 
SecondLevelCacheStatistics[hitCount=0,missCount=0,putCount=0,elementCountInMemory=1,elementCountOnDisk=1,sizeInMemory=760]

请帮我弄清楚我做错了什么！：（

非常感谢!!!

Answer 1

迟到的回复，但

尝试在要跟踪的statistics="true"元素中添加<cache>。还添加 hibernate.cfg.xml中的<property name="hibernate.generate_statistics">true</property>

Answer 2

只是快速扫描一下，但你配置使用hibernate来使用net.sf.ehcache.hibernate.EhCacheRegionFactory，而不是singleton，但是然后使用CacheManager.getInstance() ...你试过监控缓存活动通过Hibernate统计？不知道你是否真的使用与Hibernate相同的CacheManage ...

Answer 3

你试过了吗？

sessionFactory.getCurrentSession().get(Location.class, 86);

而不是使用Criteria Query？据我所知，Hibernate只会通过@Id加载一个对象来达到二级缓存，所以在会话中使用get / load。

如果您使Criteria可缓存：

sessionFactory.getCurrentSession.createCriteria().setCacheable(true).uniqueResult();

并启用实体和查询缓存，只要执行该查询，您就会点击二级缓存。

在查询同一个项目时，Ehcache没有被击中

3 个答案: