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From "Tim Cronin" <Tim.Cro...@autonomy.com>
Subject RE: JCS CONFIG Help
Date Tue, 22 Mar 2011 16:10:58 GMT
Here's the configuration (below code) I'm using. notice IsEternal and
MaxLifeSeconds.

We have variable cache times for component cache so we set these
programmatically.

  public void put(Key pKey, Object pValue, long pTTL)
  {
    try
    {
      mLock.writeLock().acquire();
      if (pTTL == 0)
      {
        mLogger.warn("putting uncached object in cache " + pKey);
        return;
      }

      IElementAttributes attribs = mCache.getDefaultElementAttributes();

      if( pTTL != -1 )
      {
        attribs.setMaxLifeSeconds(pTTL);
        attribs.setIsEternal(false);
      }
      mCache.put(pKey.toString(), pValue, attribs);
    }
    catch(Exception e)
    {
      throw new CacheException("could not add to JCS region", e);
    }
    finally
    {
      mLock.writeLock().release();
    }
  }


##################################################################
# JCS homepage:  http://jakarta.apache.org/jcs/
##################################################################

##################################################################
# mem cache settings
##################################################################
jcs.default=DC
jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttribut
es
jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory
.lru.LRUMemoryCache
jcs.default.cacheattributes.UseMemoryShrinker=true
jcs.default.cacheattributes.ShrinkerIntervalSeconds=300
jcs.default.cacheattributes.MaxSpoolPerRun=64

##################################################################
# element attributes
##################################################################
jcs.default.elementattributes=org.apache.jcs.engine.ElementAttributes
jcs.default.elementattributes.MaxLifeSeconds=-1
jcs.default.elementattributes.IdleTime=-1
jcs.default.elementattributes.IsEternal=true
jcs.default.elementattributes.IsSpool=true
jcs.default.elementattributes.IsRemote=false
jcs.default.elementattributes.IsLateral=false

##################################################################
# default disk cache settings
##################################################################
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.MaxPurgatorySize=64
jcs.auxiliary.DC.attributes.MaxKeySize=1024
jcs.auxiliary.DC.attributes.OptimizeAtRemoveCount=256
jcs.auxiliary.DC.attributes.OptimizeOnShutdown=true
jcs.auxiliary.DC.attributes.MaxRecycleBinSize=64
jcs.auxiliary.DC.attributes.EventQueueType=POOLED
jcs.auxiliary.DC.attributes.EventQueuePoolName=disk_cache_event_queue

##################################################################
# Disk Cache pool
##################################################################
thread_pool.disk_cache_event_queue.boundarySize=50
thread_pool.disk_cache_event_queue.useBoundary=true
thread_pool.disk_cache_event_queue.maximumPoolSize=30
thread_pool.disk_cache_event_queue.minimumPoolSize=4
thread_pool.disk_cache_event_queue.keepAliveTime=3500
thread_pool.disk_cache_event_queue.startUpSize=4
thread_pool.disk_cache_event_queue.whenBlockedPolicy=RUN

##################################################################
# Component cache pool disk cache attributes
# See runtime.cache.ComponentCachePool in cache-resource-config.xml for
configuring the pool size
##################################################################
# Following definitions are to be used by all component caches in this
pool
#
# Number of object PER cache, total number of memory objects is
(MaxObjects * cacheCount) in spring config
jcs.region.component=DC
jcs.region.component.cacheattributes.MaxObjects=40
##################################################################

##################################################################
# Following definitions are to be used by all page caches in this pool
#
# See runtime.cache.PageCachePool in cache-resource-config.xml for
configuring the pool size
###################################################################
# Number of object PER cache, total number of memory objects is
(MaxObjects * cacheCount) in spring config
jcs.region.page=DC
jcs.region.page.cacheattributes.MaxObjects=128
###################################################################

###################################################################
# Stylesheet settings
###################################################################
#disable disk caching if WAS doesn't provide serialized dom
#jcs.region.stylesheet=
jcs.region.component=DC
jcs.region.stylesheet.cacheattributes.MaxObjects=128
###################################################################

###################################################################
# Rules settings
###################################################################
jcs.region.component=DC
jcs.region.rulesenginevalues.cacheattributes.MaxObjects=128
###################################################################

-----Original Message-----
From: Bhandari, Shweta
[mailto:Shweta.Bhandari@morganstanleysmithbarney.com] 
Sent: Tuesday, March 22, 2011 10:33 AM
To: JCS Users List; Tim Cronin
Subject: RE: JCS CONFIG Help

 
Hello Tim, 

Thanks for your replu

It works fine with the same code if I increase this particular
parameter from  jcs.default.cacheattributes.MaxObjects=50
to jcs.default.cacheattributes.MaxObjects=500000 and reduce the
jcs.auxiliary.DC.attributes.MaxKeySize=200000
To jcs.auxiliary.DC.attributes.MaxKeySize=20

All I am trying to do is use disk based cache for majority of my
objects. Let me know if you need anything else. Contents of ccf are
provided below. 

jcs.default=DC
jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttribut
es
jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory
.lru.LRUMemoryCache
jcs.default.cacheattributes.MaxObjects=50
jcs.default.cacheattributes.UseMemoryShrinker=false
jcs.default.cacheattributes.MaxMemoryIdleTimeSeconds=10800
jcs.default.cacheattributes.ShrinkerIntervalSeconds=3600
jcs.default.elementattributes=org.apache.jcs.engine.ElementAttributes
jcs.default.elementattributes.IsEternal=false
jcs.default.elementattributes.MaxLifeSeconds=36000
jcs.default.elementattributes.IsSpool=true
jcs.default.elementattributes.IsRemote=false
jcs.default.elementattributes.IsLateral=false

##############################################################
##### AUXILIARY CACHES
# Indexed Disk Cache
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=/tmp/rms
jcs.auxiliary.DC.attributes.MaxKeySize=200000
jcs.auxiliary.DC.attributes.MaxPurgatorySize=200000
jcs.auxiliary.DC.attributes.ClearDiskOnStartup=true
cs.auxiliary.DC.attributes.MaxRecycleBinSize=10000



Thanks for your help, 
Shweta

-----Original Message-----
From: Tim Cronin [mailto:Tim.Cronin@autonomy.com] 
Sent: Tuesday, March 22, 2011 11:30 AM
To: JCS Users List
Subject: RE: JCS CONFIG Help

Do you have sample code of how you suing the cache?

-----Original Message-----
From: Bhandari, Shweta
[mailto:Shweta.Bhandari@morganstanleysmithbarney.com]
Sent: Tuesday, March 22, 2011 8:46 AM
To: jcs-users@jakarta.apache.org
Subject: JCS CONFIG Help

Hello Everyone,

I am new to JCS and I am trying to use JCS in my webapp. All I want to
use is diskbasedcache to reduce the memory usage on tomcat server.
Looks like my parameters in ccf are wrong . I perpetually get null
pointer exception for the object which I Put in the cache. It seems like
my object is lost Please advise.

Here are the contents of my  ccf file for your perusal Thanks, Shweta


jcs.default=DC
jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttribut
es
jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory
.lru.LRUMemoryCache
jcs.default.cacheattributes.MaxObjects=50
jcs.default.cacheattributes.UseMemoryShrinker=false
jcs.default.cacheattributes.MaxMemoryIdleTimeSeconds=10800
jcs.default.cacheattributes.ShrinkerIntervalSeconds=3600
jcs.default.elementattributes=org.apache.jcs.engine.ElementAttributes
jcs.default.elementattributes.IsEternal=false
jcs.default.elementattributes.MaxLifeSeconds=36000
jcs.default.elementattributes.IsSpool=true
jcs.default.elementattributes.IsRemote=false
jcs.default.elementattributes.IsLateral=false

##############################################################
##### AUXILIARY CACHES
# Indexed Disk Cache
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=/tmp/rms
jcs.auxiliary.DC.attributes.MaxKeySize=200000
jcs.auxiliary.DC.attributes.MaxPurgatorySize=200000
jcs.auxiliary.DC.attributes.ClearDiskOnStartup=true
cs.auxiliary.DC.attributes.MaxRecycleBinSize=10000
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Important Notice to Recipients:
 
The sender of this e-mail is an employee of Morgan Stanley Smith Barney
LLC. If you have received this communication in error, please destroy
all electronic and paper copies and notify the sender immediately.
Erroneous transmission is not intended to waive confidentiality or
privilege. Morgan Stanley Smith Barney reserves the right, to the extent
permitted under applicable law, to monitor electronic communications.
This message is subject to terms available at the following link:
http://www.morganstanley.com/disclaimers/mssbemail.html. If you cannot
access this link, please notify us by reply message and we will send the
contents to you. By messaging with Morgan Stanley Smith Barney you
consent to the foregoing.


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