弹簧连接的EhCache磁盘存储在多线程应用程序中创建冲突

直觉：它看起来有点像两个线程都尝试初始化基于磁盘的溢出缓存，并且其中一个失败。弹簧连接的EhCache磁盘存储在多线程应用程序中创建冲突

在这个应用程序中有两个线程。在以下日志摘录中，它们由ID 0000004a和0000003d表示。他们开始在同一时间：

[3/04/12 10:17:50:832 EST] 0000004a EhCacheManage I org.springframework.cache.ehcache.EhCacheManagerFactoryBean afterPropertiesSet Initializing EHCache CacheManager 
[3/04/12 10:17:50:832 EST] 0000003d EhCacheManage I org.springframework.cache.ehcache.EhCacheManagerFactoryBean afterPropertiesSet Initializing EHCache CacheManager

的Ehcache通过弹簧接线：

<ehcache:annotation-driven cache-manager="ehCacheManager"/> 
<bean id="ehCacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"/>

正是如此配置：

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd" updateCheck="false"> 
    <diskStore path="java.io.tmpdir/GMM_DAO_Caches"/> 

    <defaultCache eternal="false" maxElementsInMemory="1000" 
       overflowToDisk="false" diskPersistent="false" timeToIdleSeconds="0" 
       timeToLiveSeconds="300" memoryStoreEvictionPolicy="LRU"/> 

    <cache name="dao_results" eternal="false" maxElementsInMemory="1000" 
      overflowToDisk="true" diskPersistent="false" 
      timeToIdleSeconds="0" timeToLiveSeconds="3600" 
      memoryStoreEvictionPolicy="LRU"/> 

    <cache name="dao_results_shortlived" eternal="false" maxElementsInMemory="1000" 
      overflowToDisk="true" diskPersistent="false" 
      timeToIdleSeconds="0" timeToLiveSeconds="300" 
      memoryStoreEvictionPolicy="LRU"/> 

</ehcache>

错误：

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.googlecode.ehcache.annotations.config.internalEhCach 
eCachingAdvisor': Cannot resolve reference to bean 'com.googlecode.ehcache.annotations.impl.CacheStaticMethodMatcherPointcut#0' while setting bean property 
'pointcut'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.googlecode.ehcache.annotations 
.impl.CacheStaticMethodMatcherPointcut#0': Cannot resolve reference to bean 'com.googlecode.ehcache.annotations.impl.CacheAttributeSourceImpl#0' while sett 
ing bean property 'cacheAttributeSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.g 
ooglecode.ehcache.annotations.impl.CacheAttributeSourceImpl#0': Cannot resolve reference to bean 'ehCacheManager' while setting bean property 'cacheManager 
'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ehCacheManager' defined in class path resour 
ce [ApplicationContext-DAOs.xml]: Invocation of init method failed; nested exception is net.sf.ehcache.CacheException: Could not create cache directory "C: 
\DOCUME~1\JMAWSO~1.NT3\LOCALS~1\Temp\GMM_DAO_Caches\ehcache_auto_created_1333412270879". 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328) 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1325) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) 
    at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:86) 
    at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:100) 
    at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:86) 
    at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:68) 
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:359) 
    at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:322) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanF 
actory.java:407) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1426) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) 
     ... 35 more 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.googlecode.ehcache.annotations.impl.CacheStaticMetho 
dMatcherPointcut#0': Cannot resolve reference to bean 'com.googlecode.ehcache.annotations.impl.CacheAttributeSourceImpl#0' while setting bean property 'cac 
heAttributeSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.googlecode.ehcache.anno 
tations.impl.CacheAttributeSourceImpl#0': Cannot resolve reference to bean 'ehCacheManager' while setting bean property 'cacheManager'; nested exception is 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ehCacheManager' defined in class path resource [ApplicationContext 
-DAOs.xml]: Invocation of init method failed; nested exception is net.sf.ehcache.CacheException: Could not create cache directory "C:\DOCUME~1\JMAWSO~1.NT3 
\LOCALS~1\Temp\GMM_DAO_Caches\ehcache_auto_created_1333412270879". 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328) 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1325) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322) 
     ... 53 more 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.googlecode.ehcache.annotations.impl.CacheAttributeSo 
urceImpl#0': Cannot resolve reference to bean 'ehCacheManager' while setting bean property 'cacheManager'; nested exception is org.springframework.beans.fa 
ctory.BeanCreationException: Error creating bean with name 'ehCacheManager' defined in class path resource [ApplicationContext-DAOs.xml]: Invocation of ini 
t method failed; nested exception is net.sf.ehcache.CacheException: Could not create cache directory "C:\DOCUME~1\JMAWSO~1.NT3\LOCALS~1\Temp\GMM_DAO_Caches 
\ehcache_auto_created_1333412270879". 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328) 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1325) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322) 
     ... 63 more 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ehCacheManager' defined in class path resource [Applicat 
ionContext-DAOs.xml]: Invocation of init method failed; nested exception is net.sf.ehcache.CacheException: Could not create cache directory "C:\DOCUME~1\JM 
AWSO~1.NT3\LOCALS~1\Temp\GMM_DAO_Caches\ehcache_auto_created_1333412270879". 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1420) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) 
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322) 
     ... 73 more 
Caused by: net.sf.ehcache.CacheException: Could not create cache directory "C:\DOCUME~1\JMAWSO~1.NT3\LOCALS~1\Temp\GMM_DAO_Caches\ehcache_auto_created_1333 
412270879". 
    at net.sf.ehcache.store.compound.factories.DiskOverflowStorageFactory.getDataFile(DiskOverflowStorageFactory.java:89) 
    at net.sf.ehcache.store.compound.factories.DiskOverflowStorageFactory.<init>(DiskOverflowStorageFactory.java:71) 
    at net.sf.ehcache.store.compound.impl.OverflowToDiskStore.create(OverflowToDiskStore.java:63) 
    at net.sf.ehcache.Cache.initialise(Cache.java:969) 
    at net.sf.ehcache.CacheManager.addCacheNoCheck(CacheManager.java:967) 
    at net.sf.ehcache.CacheManager.addConfiguredCaches(CacheManager.java:608) 
    at net.sf.ehcache.CacheManager.init(CacheManager.java:339) 
    at net.sf.ehcache.CacheManager.<init>(CacheManager.java:280) 
    at org.springframework.cache.ehcache.EhCacheManagerFactoryBean.afterPropertiesSet(EhCacheManagerFactoryBean.java:115) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1477) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417) 
     ... 80 more

我怀疑两个线程都试图写入sa我的文件。时间戳不是制作独特文件名的好方法。在具有更多线程的应用程序中，此错误发生得更频繁。

如何避免这些碰撞？最好是，我想将线程ID或其他唯一标识符嵌入到文件名中。

来源

2012-04-03 Synesso

我以为你的设置可能只是看着配置工作。

一种选择是定义两个不同的缓存管理器，每个缓存管理器都有自己的磁盘存储。

或者，您可以使用CacheManager工厂方法创建单例CacheManager，从而消除由于两个缓存管理器访问同一个存储而导致的争用。 Ehcache应该处理这个案件，并给你一个警告;可能是特定于版本的问题。

最后，检查这是否是Windows权限问题。尝试其他位置。例如：

<diskStore path="ehcache.disk.store.dir2" />并将一个-D变量设置为您知道可写入的位置。例如：

-Dehcache.disk.store.dir2=C:/temp/ehcache

（假定C：/温度存在）

来源

2012-04-03 06:17:35 TechTrip

Righteo。我调用了[Spring的EhCacheManagerFactoryBean上的setShared]（http://static.springsource.org/spring/docs/2.0.x/api/org/springframework/cache/ehcache/EhCacheManagerFactoryBean.html#setShared（boolean））。这应该够了吧。 – Synesso 2012-04-30 01:24:58

弹簧连接的EhCache磁盘存储在多线程应用程序中创建冲突

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