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我在Spring框架中使用Hibernate，并尝试缓存通过CriteriaAPI编写的查询。我已经启用了查询缓存和二级缓存。我还在该特定查询中将setCacheable设置为true。问题在于，hibernate会话统计数据显示，它对于我多次运行的相同查询而言，都会触发数据库的所有内容。休眠缓存始终未命中
这里的功能与标准查询
@Override
public Collection<Article> findLatestArticle(int count) {
// TODO Auto-generated method stub
Criteria criteria = this.getSession()
.createCriteria(Article.class)
.setCacheable(true)
.setCacheRegion(CACHE_REGION)
.add(Restrictions.eq("isVisible", 1))
//.createCriteria("Count")
//.add(Restrictions.eq("Count", count))
.setFirstResult(0)
.setMaxResults(count);
return criteria.list();
}
这里的调用函数
@Test
public void t1(){
List<Article> articleList = (List<Article>) articleDao.findLatestArticle(1);
//Article a = articleDao.findById(articlePk);
for(int i=0; i<19; i++)
articleDao.findLatestArticle(1);
Statistics stats = sessionFactory.getCurrentSession().getSessionFactory().getStatistics();
//System.out.println("2nd Lvl Stats: " + stats.getSecondLevelCacheStatistics(CACHE_REGION));
stats.logSummary();
System.out.println("Empty: " + articleList.isEmpty());
assertTrue(!articleList.isEmpty());
//assertNotNull(a);
}
弹簧休眠上下文文件
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
<prop key="hibernate.cache.use_second_level_cache">true</prop>
<prop key="hibernate.cache.use_query_cache">true</prop>
<prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</prop>
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.cache.use_structured_entries">true</prop>
<prop key="net.sf.Ehcache.configurationResourceName">ehcache.xml</prop>
</props>
</property>
本类的Ehcache部分
<cache name="com.contento3.cms.article.model.Article"
maxElementsInMemory="10000"
eternal="false"
timeToIdleSeconds="300"
timeToLiveSeconds="60"
overflowToDisk="true"/>
日志摘录：
2012-11-14 21:05:03,020 [main] INFO org.hibernate.cfg.SettingsFactory - Second-level cache: enabled
2012-11-14 21:05:03,020 [main] INFO org.hibernate.cfg.SettingsFactory - Query cache: enabled
2012-11-14 21:05:03,969 [main] INFO org.hibernate.cache.StandardQueryCache - starting query cache at region: com.contento3.cms.article.model.Article
2012-11-14 21:05:03,998 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 10ms, rows: 1
2012-11-14 21:05:04,010 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 1ms, rows: 1
2012-11-14 21:05:04,019 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 8ms, rows: 1
2012-11-14 21:05:04,022 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 2ms, rows: 1
2012-11-14 21:05:04,024 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 2ms, rows: 1
2012-11-14 21:05:04,026 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 2ms, rows: 1
2012-11-14 21:05:04,033 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 7ms, rows: 1
2012-11-14 21:05:04,035 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 2ms, rows: 1
2012-11-14 21:05:04,038 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 2ms, rows: 1
2012-11-14 21:05:04,041 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 2ms, rows: 1
2012-11-14 21:05:04,050 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 3ms, rows: 1
2012-11-14 21:05:04,059 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 9ms, rows: 1
2012-11-14 21:05:04,062 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 3ms, rows: 1
2012-11-14 21:05:04,067 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 4ms, rows: 1
2012-11-14 21:05:04,074 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 5ms, rows: 1
2012-11-14 21:05:04,077 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 2ms, rows: 1
2012-11-14 21:05:04,079 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 1ms, rows: 1
2012-11-14 21:05:04,081 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 1ms, rows: 1
2012-11-14 21:05:04,083 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 2ms, rows: 1
2012-11-14 21:05:04,085 [main] INFO org.hibernate.stat.Statistics - HQL: from Article as a, time: 2ms, rows: 1
2012-11-14 21:05:04,085 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - Logging statistics....
2012-11-14 21:05:04,085 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - start time: 1352909103053
2012-11-14 21:05:04,085 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - sessions opened: 1
2012-11-14 21:05:04,085 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - sessions closed: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - transactions: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - successful transactions: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - optimistic lock failures: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - flushes: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - connections obtained: 1
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - statements prepared: 21
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - statements closed: 21
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - second level cache puts: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - second level cache hits: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - second level cache misses: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - entities loaded: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - entities updated: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - entities inserted: 1
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - entities deleted: 0
2012-11-14 21:05:04,086 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - entities fetched (minimize this): 0
2012-11-14 21:05:04,087 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - collections loaded: 0
2012-11-14 21:05:04,087 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - collections updated: 0
2012-11-14 21:05:04,087 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - collections removed: 0
2012-11-14 21:05:04,087 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - collections recreated: 0
2012-11-14 21:05:04,087 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - collections fetched (minimize this): 0
2012-11-14 21:05:04,087 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - queries executed to database: 20
2012-11-14 21:05:04,087 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - query cache puts: 20
2012-11-14 21:05:04,087 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - query cache hits: 0
2012-11-14 21:05:04,087 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - query cache misses: 20
2012-11-14 21:05:04,087 [main] INFO org.hibernate.stat.ConcurrentStatisticsImpl - max query time: 10ms
我是相当新的Spring和Hibernate。我已经阅读了至少十几篇关于这个问题的文章，并尽我所能。另外，我使用createQuery方法编写了一个类似的查询，结果是一样的。任何帮助，将不胜感激。
为文章对象打上@Cache注解？ – chrislhardin
@chrislhardin：是的，我已经加入了他们。公共类文章实现了Serializable {....'实体= CacheConcurrencyStrategy.READ_WRITE） @Table（name =“ARTICLE”） public class Article实现Serializable {....' –