As per the source code of IndexedDiskCache, keys can also be saved and retrieved to disk and not necessarily be maintained in memory.
Cache Manager which maintains cache is based on Singleton pattern and hence there can't be multiple instances pointing to same file and its running in Weblogic Portal Server sharing only one JVM. Files have got RW permissions and are in windows env. Please respond to "Turbine JCS Users List" <[EMAIL PROTECTED]> To: Turbine JCS Users List <[EMAIL PROTECTED]> cc: Subject: Re: Indexed Disk Cache Configuration All of the keys are kept in memory in JCS. That is why the keys file remains at 0. Is there more than one JVM instance pointing to this directory? When the JVM stops the problem usually goes away. Another question is what are the permissions on these files? ----- Original Message ----- From: <[EMAIL PROTECTED]> To: "Turbine JCS Users List" <[EMAIL PROTECTED]> Sent: Wednesday, January 14, 2004 8:48 PM Subject: Re: Indexed Disk Cache Configuration > Is there anything needs to be done in code for disk specific JCS > instance > like releasing file handle or something? > There are two files which got created automatically, one having > extension > ".data" and other ".key", but why ".key" extension file always has 0KB > size whereas ".data" one expands as I put more cache items > > > > Please respond to "Turbine JCS Users List" > <[EMAIL PROTECTED]> > To: Turbine JCS Users List <[EMAIL PROTECTED]> > cc: > > Subject: Re: Indexed Disk Cache Configuration > > I get this message when another jvm process has a reference to my > indexed > cache files. > ----- Original Message ----- > From: <[EMAIL PROTECTED]> > To: "Turbine JCS Users List" <[EMAIL PROTECTED]> > Sent: Wednesday, January 14, 2004 8:30 PM > Subject: Indexed Disk Cache Configuration > > > > I gotta use indexed disk caching and below is cache.ccf settings. > > > > When I restart my server, it gives following exception: > > [INFO] CompositeCache - -Constructed cache with name: > > eplatform_disk_cache > > [INFO] IndexedDiskCache - -Cache file root directory: c:\tmp > > [WARN] IndexedDisk - -Failed to delete eplatform_disk_cache.data 0 > > [WARN] IndexedDisk - -Failed to delete eplatform_disk_cache.data 1 > > [WARN] IndexedDisk - -Failed to delete eplatform_disk_cache.data 2 > > [WARN] IndexedDisk - -Failed to delete eplatform_disk_cache.data 3 > > [WARN] IndexedDisk - -Failed to delete eplatform_disk_cache.data 4 > > [WARN] IndexedDisk - -Failed to delete eplatform_disk_cache.data 5 > > [WARN] IndexedDisk - -Failed to delete eplatform_disk_cache.data 6 > > [WARN] IndexedDisk - -Failed to delete eplatform_disk_cache.data 7 > > [WARN] IndexedDisk - -Failed to delete eplatform_disk_cache.data 8 > > [WARN] IndexedDisk - -Failed to delete eplatform_disk_cache.data 9 > > [ERROR] IndexedDisk - -java.lang.IllegalStateException: Failed to > delete > > > > eplatform_disk_cache.data > > [ERROR] IndexedDiskCache - -Failure initializing for fileName: > > eplatform_disk_cache and root directory: c:\tmp <java.lan > > g.IllegalStateException: Failed to delete > > eplatform_disk_cache.data>java.lang.IllegalStateException: Failed to > > delete ep > > latform_disk_cache.data > > at > > > org.apache.jcs.auxiliary.disk.indexed.IndexedDisk.reset(IndexedDisk.java > > :316) > > at > > > org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache.<init>(IndexedDis > > kCache.java:155) > > at > > > org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCacheManager.getCache(I > > ndexedDiskCacheManager.java:174) > > at > > > org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCacheFactory.createCach > > e(IndexedDiskCacheFactory.java:88) > > at > > > org.apache.jcs.engine.control.CompositeCacheConfigurator.parseAuxiliary( > > CompositeCacheConfigurator.java:451) > > at > > > org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(Com > > positeCacheConfigurator.java:297) > > at > > > org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegion(Com > > positeCacheConfigurator.java:234) > > at > > > org.apache.jcs.engine.control.CompositeCacheConfigurator.parseRegions(Co > > mpositeCacheConfigurator.java:222) > > at > > > org.apache.jcs.engine.control.CompositeCacheConfigurator.doConfigure(Com > > positeCacheConfigurator.java:148) > > at > > > org.apache.jcs.engine.control.CompositeCacheManager.configure(CompositeC > > acheManager.java:244) > > at > > > org.apache.jcs.engine.control.CompositeCacheManager.configure(CompositeC > > acheManager.java:227) > > at > > > org.apache.jcs.engine.control.CompositeCacheManager.configure(CompositeC > > acheManager.java:185) > > at > > > org.apache.jcs.engine.control.CompositeCacheManager.getInstance(Composit > > eCacheManager.java:130) > > at org.apache.jcs.JCS.ensureCacheManager(JCS.java:135) > > at org.apache.jcs.JCS.getInstance(JCS.java:101) > > at > > > com.axa.eplatform.util.ecache.jcache.JCache.getCacheForRegion(JCache.jav > > a:44) > > at > > com.axa.eplatform.util.ecache.jcache.JCache.get(JCache.java:76) > > at jsp_servlet._util.__cache._jspService(__cache.java:92) > > at weblogic.servlet.jsp.JspBase.service(JspBase.java:27) > > at > > > weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(Se > > rvletStubImpl.java:1058) > > > > > > > > > > > > cache.ccf > > > > # Disk Cache > > jcs.region.eplatform_disk_cache=DC > > > jcs.region.eplatform_disk_cache.cacheattributes=org.apache.jcs.engine.Co > > mpositeCacheAttributes > > > > # object will not be held in memory, straight to disk > > jcs.region.eplatform_disk_cache.cacheattributes.MaxObjects=0 > > > > > #jcs.region.eplatform_disk_cache.cacheattributes.MemoryCacheName=org.apa > > che.jcs.engine.memory.lru.LRUMemoryCache > > > #jcs.region.eplatform_disk_cache.cacheattributes.UseMemoryShrinker=true > > > #jcs.region.eplatform_disk_cache.cacheattributes.MaxMemoryIdleTimeSecond > > s=30 > > > #jcs.region.eplatform_disk_cache.cacheattributes.ShrinkerIntervalSeconds > > =60 > > > jcs.region.eplatform_disk_cache.elementattributes=org.apache.jcs.engine. > > ElementAttributes > > jcs.region.eplatform_disk_cache.elementattributes.IsEternal=true > > #jcs.region.eplatform_disk_cache.elementattributes.MaxLifeSeconds=5 > > jcs.region.eplatform_disk_cache.elementattributes.IdleTime=1 > > jcs.region.eplatform_disk_cache.elementattributes.IsSpool=true > > jcs.region.eplatform_disk_cache.elementattributes.IsRemote=false > > jcs.region.eplatform_disk_cache.elementattributes.IsLateral=false > > > > > > # Primary Disk Cache -- faster than the rest because of memory key > > storage > > > jcs.auxiliary.DC=org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCacheF > > actory > > > jcs.auxiliary.DC.attributes=org.apache.jcs.auxiliary.disk.indexed.Indexe > > dDiskCacheAttributes > > jcs.auxiliary.DC.attributes.DiskPath=c:\\tmp > > > > > ************************************************************************ > > ********* > > Important Note > > This email (including any attachments) contains information which is > > confidential and may be subject to legal privilege. 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