MaxObjects=10000 ?
On Fri, 2008-07-18 at 13:06 -0500, vinay b wrote:
> I seem to be losing about 90 % of my keys:
>
> 1. insert 500,000 elements in the cache via a loop
> 2. loop through and check whether all elements are accesable
>
> The results and code snippets follow:
>
> STATS:
>
> The stats I get (verified both via a counter I implement) and via the
> stats() method are
>
> Thanks in advance
>
> Vin B
>
> from my code debugs:
> found 45963 in 490001 tries
> end get, ... found 55962 in 500001 tries
>
>
> from the stats:
> Region Name = testCache1
> HitCountRam = 0
> HitCountAux = 55962
>
> ---------------------------LRU Memory Cache
> List Size = 9998
> Map Size = 9998
> Put Count = 555962 ==================================> ????
> Hit Count = 0
> Miss Count = 500000 =================================> why am I missing hits
> here
> ---------------------------Indexed Disk Cache
> Is Alive = true
> Key Map Size = 55962 ================================> ????
> Data File Length = 38544627
> Hit Count = 55962
> Bytes Free = 0
> Optimize Operation Count = 0
> Times Optimized = 0
> Recycle Count = 0
> Recycle Bin Size = 0
> Startup Size = 46431
> Purgatory Hits = 0
> Purgatory Size = 0
> Working = true
> Alive = true
> Empty = true
> Size = 0
> Jul 18, 2008 12:28:00 PM
> org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCache$ShutdownHook run
> WARNING: Region [testCache1] Disk cache not shutdown properly, shutting down
> now.
>
>
> CODE
> # DEFAULT CACHE REGION
>
> #jcs.default=DC,LTCP
> jcs.default=DC
> jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttributes
> jcs.default.cacheattributes.MaxObjects=10000
> jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory.lru.LRUMemoryCache
>
> # PRE-DEFINED CACHE REGIONS
>
> #jcs.region.testCache1=DC,LTCP
> jcs.region.testCache1=DC
> jcs.region.testCache1.cacheattributes=org.apache.jcs.engine.CompositeCacheAttributes
> jcs.region.testCache1.cacheattributes.MaxObjects=10000
> jcs.region.testCache1.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory.lru.LRUMemoryCache
> jcs.region.testCache1.cacheattributes.UseMemoryShrinker=true
> jcs.region.testCache1.cacheattributes.MaxMemoryIdleTimeSeconds=3600
> jcs.region.testCache1.cacheattributes.ShrinkerIntervalSeconds=600
> jcs.region.testCache1.cacheattributes.MaxSpoolPerRun=500
> jcs.region.testCache1.elementattributes=org.apache.jcs.engine.ElementAttributes
> jcs.region.testCache1.elementattributes.IsEternal=true
>
>
> # AVAILABLE AUXILIARY CACHES
> 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=c:/tmp
> jcs.auxiliary.DC.attributes.maxKeySize=1000000
>
>
>
> ///////////////////////////////////////////
> package com.interlegis.ehcachevsjcs;
>
> import org.apache.commons.logging.Log;
> import org.apache.commons.logging.LogFactory;
> import org.apache.jcs.JCS;
> import org.apache.jcs.access.exception.CacheException;
> import org.apache.jcs.engine.CompositeCacheAttributes;
> import org.apache.jcs.engine.behavior.ICompositeCacheAttributes;
> import org.apache.jcs.utils.struct.LRUMap;
>
> public class JCSApp {
>
> private static int MAX_NUM = 500000;
>
> private Log log = null;
> private JCS jcs = null;
>
> public void init() throws CacheException {
> log = LogFactory.getLog(LRUMap.class);
> jcs = JCS.getInstance("testCache1");
> }
>
> public void insert(int key) throws CacheException {
> jcs.put(Integer.toString(key), new MyObjectVO(Integer.toString(key),
> "some string" + Integer.toString(key)));
> }
>
> public void insertMany(int maxNum) throws CacheException {
> for (int i = 0; i < maxNum; i++) {
> insert(i);
>
> if ((i % 10000) == 0) {
> System.out.println("inserted " + i + " records");
> }
> }
> }
>
> public Object get(int key) {
> return jcs.get(Integer.toString(key));
> }
>
> public void getMany(int maxNum) {
> int count = 0;
> int i = 0;
> for (i = 0; i < maxNum; i++) {
> if (get(i) != null) {
> count++;
> }
>
> if ((i % 10000) == 0) {
> System.out.println("found " + count + " in " + (i + 1)
> + " tries");
> }
> }
>
> System.out.println("end get, ... found " + count + " in " + (i + 1)
> + " tries");
> }
>
> public void junk() {
>
> }
>
> public void printStats() {
> ;
> System.out.println(jcs.getStats());
> }
>
> public static void main(String[] args) {
> JCSApp jc = new JCSApp();
>
> try {
> jc.init();
> jc.insertMany(MAX_NUM);
> System.out.println("insert complete");
> jc.getMany(MAX_NUM);
> jc.printStats();
>
> } catch (CacheException e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> }
>
> }
> }
