Ehcache and SLF4J error - configuration

Question

I am new to Ehcache and Slf4j .I am using ehcache-2.6.6
I have used
slf4j-api-1.6.1 jar
slf4j-jdk14-1.6.1 jar
When i extracted ehcache-2.6.6-distribution.tar these two jars were in folder lib .
This is my ehcache.xml
<?xml version="1.0" encoding="UTF-8"?>
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="ehcache.xsd"
updateCheck="true" monitoring="autodetect"
dynamicConfig="true">
<diskStore path="java.io.tmpdir"/>
<defaultCache
maxEntriesLocalHeap="10000"
eternal="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
diskSpoolBufferSizeMB="30"
maxEntriesLocalDisk="10000000"
diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU"
statistics="false">
<persistence strategy="localTempSwap"/>
</defaultCache>
<cache name="myCache1"
maxEntriesLocalHeap="10000"
maxEntriesLocalDisk="1000"
eternal="false"
diskSpoolBufferSizeMB="20"
timeToIdleSeconds="300"
timeToLiveSeconds="600"
memoryStoreEvictionPolicy="LFU"
transactionalMode="off">
<persistence strategy="localTempSwap"/>
</cache>
</ehcache>
This is my code
package cache;
import java.util.ArrayList;
import java.util.List;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Ehcache;
import net.sf.ehcache.Element;
public class EhcacheWrapper {
private static CacheManager cacheManager;
private static final String CACHE_NAME = "myCache1";
private static Ehcache getCache(String cacheName) {
if (cacheManager == null) {
cacheManager = CacheManager.create("ehcache.xml");
}
Ehcache cache = null;
if (cacheManager != null) {
cache = cacheManager.getEhcache(cacheName);
}
return cache;
}
public static <T> List<T> getListFromCache( String cacheName, String key, CacheCreation<T> cacheCreation){
List<T> all = new ArrayList<T>();
Ehcache cache = getCache(cacheName);
Element element = null;
if(cache!=null){
element = cache.get(key);
}
if(element==null){
System.out.println(" : CacheUtil.getListFromCache() : the element '"+key+"' has not been found in the cache ---> get the original data.");
all = cacheCreation.getAll();
cache.put(new Element(key, all));
System.out.println(" : CacheUtil.getListFromCache() : the original data for the element '"+key+"' has been added in the cache.");
}else{
System.out.println(" : CacheUtil.getListFromCache() : the element '"+key+"' has been found in the cache.");
all = (List<T>) element.getObjectValue();
}
return all;
}
public List<String> getAllData1(){
return getListFromCache( CACHE_NAME, "data1", new CacheCreation<String>(){
#Override
public List<String> getAll(){
System.out.println(" : UseCaseClass.getAllData1() : the target original method is called to get the values.");
List<String> list = new ArrayList<String>();
list.add("data1-value1");
list.add("data1-value2");
list.add("data1-value3");
list.add("data1-value4");
return list;
}
});
}
public static void main(String[] args) {
EhcacheWrapper wrappertest=new EhcacheWrapper();
wrappertest.getAllData1();
try {
Thread.sleep(1500);
} catch (InterruptedException e) {
}
wrappertest.getAllData1();
try {
Thread.sleep(1500);
} catch (InterruptedException e) {
}
wrappertest.getAllData1();
try {
Thread.sleep(1500);
} catch (InterruptedException e) {
}
}
}
When i run program i am getting following output
SLF4J: The requested version 1.6 by your slf4j binding is not compatible with [1.5.5, 1.5.6, 1.5.7, 1.5.8, 1.5.9, 1.5.10, 1.5.11]
SLF4J: See http://www.slf4j.org/codes.html#version_mismatch for further details.
May 15, 2013 1:52:36 PM net.sf.ehcache.DiskStorePathManager resolveAndLockIfNeeded
WARNING: diskStorePath 'C:\Users\toshiba\AppData\Local\Temp' is already used by an existing CacheManager either in the same VM or in a different process.
The diskStore path for this CacheManager will be set to C:\Users\toshiba\AppData\Local\Temp\ehcache_auto_created3199473242323720768diskstore.
To avoid this warning consider using the CacheManager factory methods to create a singleton CacheManager or specifying a separate ehcache configuration (ehcache.xml) for each CacheManager instance.
: CacheUtil.getListFromCache() : the element 'data1' has not been found in the cache ---> get the original data.
: UseCaseClass.getAllData1() : the target original method is called to get the values.
: CacheUtil.getListFromCache() : the original data for the element 'data1' has been added in the cache.
: CacheUtil.getListFromCache() : the element 'data1' has been found in the cache.
: CacheUtil.getListFromCache() : the element 'data1' has been found in the cache.
Though i am getting expected output but there is error in beginning saying :
SLF4J: The requested version 1.6 by your slf4j binding is not compatible with [1.5.5, 1.5.6, 1.5.7, 1.5.8, 1.5.9, 1.5.10, 1.5.11]
SLF4J: See http://www.slf4j.org/codes.html#version_mismatch for further details.
May 15, 2013 1:52:36 PM net.sf.ehcache.DiskStorePathManager resolveAndLockIfNeeded
WARNING: diskStorePath 'C:\Users\toshiba\AppData\Local\Temp' is already used by an existing CacheManager either in the same VM or in a different process.
The diskStore path for this CacheManager will be set to C:\Users\toshiba\AppData\Local\Temp\ehcache_auto_created3199473242323720768diskstore.
To avoid this warning consider using the CacheManager factory methods to create a singleton CacheManager or specifying a separate ehcache configuration (ehcache.xml) for each CacheManager instance.
I look in
slf4j-api version does not match that of the binding
for error but i could not get error for this
I saw similar error here EhCache: Simple Program not working
But it is taking about distributed cache.
For code i took reference from
Java/Ehcache: A simple example of use of Ehcache 2.6.2
Any help please why i am getting error in beginning?

Answer 1

As the warning says
To avoid this warning consider using the CacheManager factory methods to create a singleton CacheManager or specifying a separate ehcache configuration (ehcache.xml) for each CacheManager instance.
The following line using SingletonEhCacheProvider may fix your issue
<property name="hibernate.cache.provider_class">net.sf.ehcache.hibernate.SingletonEhCacheProvider</property>