I am caching String (key) for Vector (value) ...
But I found somethings. Y have a disk cache. By disable it, I can improved
my speed when cache is empty. But if I fill cache with 1600 items, it take
about 1 min for looking for 100 items inside :(
Here is my cache.cff file, the code follow ...
I'm trying with Hashtable, but I really don't like it :(
# DEFAULT CACHE REGION
jcs.default=
jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttributes
jcs.default.cacheattributes.MaxObjects=1000
jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory.lru
.LRUMemoryCache
# System CACHE REGION
jcs.system.groupIdCache=
jcs.system.groupIdCache.cacheattributes=org.apache.jcs.engine.CompositeCache
Attributes
jcs.system.groupIdCache.cacheattributes.MaxObjects=10000
jcs.system.groupIdCache.cacheattributes.MemoryCacheName=org.apache.jcs.engin
e.memory.lru.LRUMemoryCache
# PRE-DEFINED CACHE REGIONS
jcs.region.testCache1=
jcs.region.testCache1.cacheattributes=org.apache.jcs.engine.CompositeCacheAt
tributes
jcs.region.testCache1.cacheattributes.MaxObjects=1000
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=60
jcs.region.HandlerDonnees=
jcs.region.HandlerDonnees.cacheattributes=org.apache.jcs.engine.CompositeCac
heAttributes
jcs.region.HandlerDonnees.cacheattributes.MaxObjects=1000
jcs.region.HandlerDonnees.cacheattributes.MemoryCacheName=org.apache.jcs.eng
ine.memory.lru.LRUMemoryCache
jcs.region.HandlerDonnees.cacheattributes.MaxMemoryIdleTimeSeconds=3600
jcs.region.HandlerDonnees.cacheattributes.ShrinkerIntervalSeconds=60
# AVAILABLE AUXILIARY CACHES
jcs.auxiliary.DC=org.apache.jcs.auxiliary.disk.indexed.IndexedDiskCacheFacto
ry
jcs.auxiliary.DC.attributes=org.apache.jcs.auxiliary.disk.indexed.IndexedDis
kCacheAttributes
jcs.auxiliary.DC.attributes.DiskPath=/tmp
Initialisation in constructor ... (Handler is different than HandlerDonnees)
private Handler()
{
try
{
//cache = JCS.getInstance("Handler");
hashCache = new Hashtable ();
}
catch (Exception e)
{
// Handle cache region initialization failure
e.printStackTrace();
}
}
Reading the cache :
Vector enCache = new Vector ();
Vector aTraiter = new Vector ();
try
{
System.out.println (new Date ());
for (int indexMot = 0; indexMot < mots.size(); indexMot++)
{
if (indexMot % 100 == 0)
System.out.println (indexMot + " = " + new Date
());
String mot = (String) mots.elementAt(indexMot);
Vector liste = (Vector) hashCache.get(mot + suffix);
if (liste == null)
aTraiter.addElement (mot);
else
enCache.addElement (mot);
}
System.out.println (new Date ());
}
catch (Exception e)
{
e.printStackTrace();
}
Writing in cache :
try
{
hashCache.put(motATraiter + suffix,
result.elementAt(indexATraiter));
}
catch (Exception e)
{
e.printStackTrace();
}
-----Original Message-----
From: Aaron Smuts [mailto:[EMAIL PROTECTED]
Sent: Tuesday, January 20, 2004 3:07 PM
To: 'Turbine JCS Users List'
Subject: RE: Is JCS slow ?
No, no one has ever asked if JCS is slow. Something is definitely
wrong. The cache is not significantly slower than a hashtable. Can you
give more details about your configuration (i.e. the cache.ccf file) and
what you are caching.
> -----Original Message-----
> From: Spaggiari, Jean-Marc [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, January 20, 2004 1:18 PM
> To: '[EMAIL PROTECTED]'
> Subject: Is JCS slow ?
>
> Hi all.
>
> Sorry if it's a question that you have always see, but i'm not able to
> look
> at the archives ...
>
> I'm using JCS in an application where i need to look 1600 time on the
> cache
> in a loop.
>
> The cache is empty at this time.
>
> For loop take about 160 seconds.
>
> Using hashtable instead of JCS take about 1s ...
>
> Where is my mistake ? Because I think I have do a mistake. It's not
> posible
> that JCS was 160 time slower than a Hashable ...
>
> An running JCS in a servlet on JBoss. Is it posible it come from here
?
>
> Thanks for your help.
>
> JMS.
>
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