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From "Dattathreya H S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (JCS-51) lost objects
Date Mon, 21 May 2012 12:13:41 GMT

    [ https://issues.apache.org/jira/browse/JCS-51?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13280110#comment-13280110
] 

Dattathreya H S commented on JCS-51:
------------------------------------

Can one of you please post the updated configuration. I could not find any help on making
a Indexed cache block when purgatory is full. Thanks in Advance.
                
> lost objects 
> -------------
>
>                 Key: JCS-51
>                 URL: https://issues.apache.org/jira/browse/JCS-51
>             Project: Commons JCS
>          Issue Type: Question
>          Components: Indexed Disk Cache
>    Affects Versions: jcs-1.3
>         Environment: java 6 , windows xp
>            Reporter: Manfred Quasten
>            Assignee: Aaron Smuts
>            Priority: Blocker
>             Fix For: jcs-1.3
>
>
> We will use JCS to create a large number of (large) objects on disk with a smal javaheap
size. So I set MaxPurgatorySize=100 and wrote 100000 objects to the cache 
> id is the counter of the for loop as String. 
> jcs.putInGroup(id,"aGroup",object);
> After this, I tried to read this objects, in an other loop 
> final int x = (int) (100000*Math.random());
> jcs.getFromGroup( "" + x , "aGroup").
> get FromGroup will return null in 50% of the cases.  What is going wrong?!
> I get the cache  using
> jcs = JCS.getInstance("myRegion1");	
> I can't increase MaxPurgatorySize=100, because we will work (test working) with a minimum
of java heapsize. 
> Here is my configuration: 
> #############################################################
> ##### Default Region Configuration
> jcs.default=DC
> jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttributes
> jcs.default.cacheattributes.MaxObjects=100
> jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory.lru.LRUMemoryCache
> jcs.default.cacheattributes.UseMemoryShrinker=false
> jcs.default.cacheattributes.ShrinkerIntervalSeconds=60
> ##############################################################
> ##### CACHE REGIONS
> jcs.region.myRegion1=DC
> jcs.region.myRegion1.cacheattributes=org.apache.jcs.engine.CompositeCacheAttributes
> jcs.region.myRegion1.cacheattributes.MaxObjects=1000000
> jcs.region.myRegion1.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory.lru.LRUMemoryCache
> jcs.region.myRegion1.cacheattributes.DiskUsagePattern=UPDATE
> ##############################################################
> ##### AUXILIARY CACHES
> # Indexed Disk Cache
> jcs.auxiliary.DC=org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCacheFactory
> jcs.auxiliary.DC.attributes=org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCacheAttributes
> jcs.auxiliary.DC.attributes.DiskPath=dump
> jcs.auxiliary.DC.attributes.MaxPurgatorySize=100
> jcs.auxiliary.DC.attributes.MaxKeySize=-1
> jcs.auxiliary.DC.attributes.OptimizeAtRemoveCount=3000000
> jcs.auxiliary.DC.attributes.OptimizeOnShutdown=true
> jcs.auxiliary.DC.attributes.MaxRecycleBinSize=7500

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