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I try to configure a remote disk cache running on tomcat. Server and
client should run with a minimum java heapsize.
My configfiles are (server) :
# Registry used to register and provide the
# IRemoteCacheService service.
registry.host=localhost
registry.port=1102
# call back port to local caches.
remote.cache.service.port=1102
# cluster setting
remote.cluster.LocalClusterConsistency=true
remote.cluster.AllowClusterGet=true
##############################################################
##### CACHE REGIONS
jcs.region.myRegion1=DC
jcs.region.myRegion1.cacheattributes=org.apache.jcs.engine.CompositeCacheAttributes
jcs.region.myRegion1.cacheattributes.MaxObjects=-1
jcs.region.myRegion1.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory.lru.LRUMemoryCache
#jcs.region.myRegion1.cacheattributes.DiskUsagePattern=SWAP
##############################################################
##### 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=300000
jcs.auxiliary.DC.attributes.OptimizeOnShutdown=true
jcs.auxiliary.DC.attributes.MaxRecycleBinSize=7500
jcs.auxiliary.DC.attributes.EventQueueType=POOLED
jcs.auxiliary.DC.attributes.EventQueuePoolName=disk_cache_event_queue
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=15
thread_pool.disk_cache_event_queue.minimumPoolSize=1
thread_pool.disk_cache_event_queue.keepAliveTime=3500
thread_pool.disk_cache_event_queue.startUpSize=1
client:
jcs.auxiliary.RC=org.apache.jcs.auxiliary.remote.RemoteCacheFactory
jcs.auxiliary.RC.attributes=org.apache.jcs.auxiliary.remote.RemoteCacheAttributes
jcs.auxiliary.RC.attributes.FailoverServers=localhost:1102
jcs.auxiliary.RC.attributes.RemoveUponRemotePut=true
jcs.auxiliary.RC.attributes.GetOnly=false
jcs.region.myRegion1=RC
jcs.region.myRegion1.elementattributes.IsEternal=false
jcs.region.myRegion1.elementattributes.MaxLifeSeconds=60000
jcs.region.myRegion1.elementattributes.IsSpool=true
jcs.region.myRegion1.elementattributes.IsLateral=true
jcs.region.myRegion1.elementattributes.IsRemote=true
jcs.region.myRegion1.elementattributes.IsRemote=true
# DEFAULT CACHE REGION
jcs.default=RC
jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttributes
jcs.default.cacheattributes.MaxObjects=0
jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory.lru.LRUMemoryCache
jcs.auxiliary.RC.attributes.OptimizeOnShutdown=true
jcs.auxiliary.RC.attributes.MaxRecycleBinSize=7500
jcs.auxiliary.RC.attributes.MaxPurgatorySize=100
jcs.auxiliary.RC.attributes.EventQueueType=POOLED
jcs.auxiliary.RC.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=15
thread_pool.disk_cache_event_queue.minimumPoolSize=1
thread_pool.disk_cache_event_queue.keepAliveTime=3500000
thread_pool.disk_cache_event_queue.startUpSize=1
I write 50 000 objects into the cache (within a for loop) :
jcs.putInGroup(id, groupName , object);
after this, I try to read the keys back from cache and there are a lot
of objects lost
for ( int i=0 ; i < 50000 ; i++ ) {
final int x = (int) (50000*Math.random());
//System.out.println(x);
if ( cacheManager.getFromCache(""+ x) == null ) {
lost++;
}
if (( i % 1000 == 0 ) && (i > 0 ))
System.out.println(i);
}
This is the output from the servlet after the keys are written: The Key
Map Size is to smal , it is less than 50000
---------------------------
Region Name = myRegion1
HitCountRam = 0
HitCountAux = 38121
---------------------------LRU Memory Cache
List Size = 0
Map Size = 0
Put Count = 50000
Hit Count = 0
Miss Count = 50000
---------------------------Indexed Disk Cache
Is Alive = true
Key Map Size = 37986
Data File Length = 1438444745
Hit Count = 38121
Bytes Free = 37866
Optimize Operation Count = 6411
Times Optimized = 0
Recycle Count = 6410
Recycle Bin Size = 1
Startup Size = 0
Purgatory Hits = 0
Purgatory Size = 0
Working = true
Destroyed = false
Empty = true
Queue Size = 0
Queue Capacity = 50
Pool Size = 0
Maximum Pool Size = 15
---------------------------
Region Name = myRegion1
HitCountRam = 0
HitCountAux = 38121
---------------------------LRU Memory Cache
List Size = 0
Map Size = 0
Put Count = 50000
Hit Count = 0
Miss Count = 50000
---------------------------Indexed Disk Cache
Is Alive = true
Key Map Size = 37986
Data File Length = 1438444745
Hit Count = 38121
Bytes Free = 37866
Optimize Operation Count = 6411
Times Optimized = 0
Recycle Count = 6410
Recycle Bin Size = 1
Startup Size = 0
Purgatory Hits = 0
Purgatory Size = 0
Working = true
Destroyed = false
Empty = true
Queue Size = 0
Queue Capacity = 50
Pool Size = 0
Maximum Pool Size = 15
Where is the mistake ?
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