Cache refresh is showing error with @cacheable annotation

[Kesha Shah]

Hi all,

Can someone help me to debug this error ?

2015-03-11 14:59:03,844 [cachename.data] ERROR n.s.e.store.disk.DiskStorageFactory - Disk Write of -351643849550012 failed: 

java.io.NotSerializableException: com.googlecode.ehcache.annotations.RefreshableCacheEntry

at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164) ~[na:1.6.0_45]

at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518) ~[na:1.6.0_45]

at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:422) ~[na:1.6.0_45]

at net.sf.ehcache.Element.writeObject(Element.java:867) ~[ehcache-2.8.1.jar:2.8.1]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.6.0_45]

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) ~[na:1.6.0_45]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ~[na:1.6.0_45]

at java.lang.reflect.Method.invoke(Method.java:597) ~[na:1.6.0_45]

at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:940) ~[na:1.6.0_45]

at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469) ~[na:1.6.0_45]

at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400) ~[na:1.6.0_45]

at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158) ~[na:1.6.0_45]

at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330) ~[na:1.6.0_45]

at net.sf.ehcache.util.MemoryEfficientByteArrayOutputStream.serialize(MemoryEfficientByteArrayOutputStream.java:97) ~[ehcache-2.8.1.jar:2.8.1]

at net.sf.ehcache.store.disk.DiskStorageFactory.serializeElement(DiskStorageFactory.java:399) ~[ehcache-2.8.1.jar:2.8.1]

at net.sf.ehcache.store.disk.DiskStorageFactory.write(DiskStorageFactory.java:381) ~[ehcache-2.8.1.jar:2.8.1]

at net.sf.ehcache.store.disk.DiskStorageFactory$DiskWriteTask.call(DiskStorageFactory.java:473) ~[ehcache-2.8.1.jar:2.8.1]

at net.sf.ehcache.store.disk.DiskStorageFactory$PersistentDiskWriteTask.call(DiskStorageFactory.java:1067) [ehcache-2.8.1.jar:2.8.1]

at net.sf.ehcache.store.disk.DiskStorageFactory$PersistentDiskWriteTask.call(DiskStorageFactory.java:1051) [ehcache-2.8.1.jar:2.8.1]

at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [na:1.6.0_45]

at java.util.concurrent.FutureTask.run(FutureTask.java:138) [na:1.6.0_45]

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98) [na:1.6.0_45]

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206) [na:1.6.0_45]

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) [na:1.6.0_45]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) [na:1.6.0_45]

at java.lang.Thread.run(Thread.java:662) [na:1.6.0_45]

I am using cache refresh with @cacheable annotation:

CacheFetchDao.java 

@Cacheable(cacheName = "cachename",refreshInterval=10000, decoratedCacheType= DecoratedCacheType.REFRESHING_SELF_POPULATING_CACHE)

//@Cacheable( value = "cachename", key = "#key")

public List<Account> getAccounts(String key) {

//call to database

return res;

}

CachefetchEndpoint.java

        @GET

@Path("/Accounts")

@WebMethod(operationName = "Accounts")

public List<Account> Accounts() {

return dao.getAccounts("accounts");

}

ehcache.xml

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:noNamespaceSchemaLocation="ehcache.xsd" 

updateCheck="true"

monitoring="autodetect" 

dynamicConfig="true">

 

    <diskStore path="java.io.tmpdir"/>  

    

    <defaultCache    

        maxElementsInMemory="100"  

        eternal="false"    

        timeToIdleSeconds="120"    

        timeToLiveSeconds="120"    

        overflowToDisk="true"    

        diskSpoolBufferSizeMB="30"    

        maxElementsOnDisk="10000000"    

        diskPersistent="false"    

        diskExpiryThreadIntervalSeconds="120"    

        memoryStoreEvictionPolicy="LRU"/>  

  

    <!-- The cache configuration for our Currency cache -->  

    <cache name="cachename"  

        maxElementsInMemory="3000"  

        eternal="false" 

        timeToIdleSeconds="120"  

        timeToLiveSeconds="120"  

        <persistence strategy="localTempSwap"/>

    </cache>  

</ehcache>  

and config.xml

 <ehcache:annotation-driven cache-manager="ehcache" />

    

<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">

<property name="cacheManager" ref="ehcache" />

</bean>

<bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean" >

<property name="configLocation" value="ehcache.xml" />

</bean>  

Thanks !

Regards,

Kesha Shah  

[Eric Dalquist]

refreshable cache annotations can't be used with persistent or replicated caches.

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[Kesha Shah]

Hi Eric,

Thanks. But can you please elaborate a little as to why is that condition imposed by spring ? I am not able to catch the rationale behind it.

My requirement is multiple clients would be calling cachefetchendpoint.java and I don't want any client to wait while the cache is being refreshed. I am ok to send them a stale data (expired data).

So for that I think I would need a local persistant copy of the old cache to be returned when the UI is trying to access the cache which is currently being refreshed from database, right ?

Regards,

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Kesha Shah.

keshashah.com

[Ella Baila Sola]

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