ehcache logging?

wiverson · **Joined:** Fri Feb 27, 2004 6:17 pm **Posts:** 11

Try, try, try as I might, I can't seem to get ehcache to generate any logging information. I even implemented my own dummy version of Cache/CacheProvider that logs to log4j, and while that works (nicely illustrating Hibernate's cache behavior, by the way), switching back to ehcahce doesn't seem to work.

Hibernate does report that ehcache is loading, and as near as I can tell, ehcache even seems to be working, but no logging, no debug output, nothing...

According to the documentation, ehcache uses JDK 1.4 logging. Changes to the JAVA_HOME/jre/lib/logging.properties file don't seem to have any effect.

Apparently, I'm not the only one to have had this problem with JDK 1.4 logging...

link to mailing list with same problem

I've seen others on this forum who seem to have managed to get logging out of ehcache... is there a special trick?

I'm running inside of Eclipse M8, if that makes any difference.

java_dev_4 · **Joined:** Tue Feb 23, 2010 8:52 am **Posts:** 1

ehcache uses slf4j for loggin. You also need to include slf4j-log4j12 jar in your classpath.
If you are usign maven, you can add the following entry to your pom.xml:
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.5.8</version>
</dependency>

langmar · **Joined:** Fri Jul 09, 2010 7:03 am **Posts:** 1

Hello,

we also have a problem with ehcache logging. If we switch the hibernateProperties in applicationContext.xml from

Code:

<prop key="hibernate.cache.provider_class">net.sf.ehcache.hibernate.SingletonEhCacheProvider</prop>

to

Code:

<prop key="hibernate.cache.region.factory_class">net.sf.ehcache.hibernate.EhCacheRegionFactory</prop>

there are no more cache informations in our logfile :(

We use
- Hibernate 3.5.1
- Spring 2.5.6
- Log4j 1.2.14
- EhCache 2.1.0 (with slf4j-api-1.5.11.jar & slf4j-log4j12-1.5.11.jar in path)

Log4j Config:

Code:

<logger name="org.hibernate.cache">
        <level value="debug"/>
        <appender-ref ref="SQL"/>
</logger>

No changes made in ehcache.xml!

With SingletonEhCacheProvider it looks like:

Quote:

2010-07-09 14:08:44,947 DEBUG org.hibernate.cache.NonstrictReadWriteCache.get(NonstrictReadWriteCache.java:66) - Cache lookup: ch.xxxxx.Text#ch.xxxxxx.TextId@eaf230d9
2010-07-09 14:08:44,947 DEBUG net.sf.ehcache.hibernate.EhCache.get(EhCache.java:90) - key: ch.xxxxxxx.Text#ch.xxxxx.TextId@eaf230d9
2010-07-09 14:08:44,947 DEBUG org.hibernate.cache.NonstrictReadWriteCache.get(NonstrictReadWriteCache.java:71) - Cache hit

Anyone who can help? Missing Configuration somewhere?

Thanks in advance!

MaryD · **Joined:** Sun Mar 13, 2011 5:37 am **Posts:** 3

Hi all,
Though I don’t have a specific solution for these issues, here are some interesting facts regarding Ehcache logging, originally taken from the White Paper “Caching Use Cases in the Enterprise” by Teracotta Server, that you should take into account as an administrator, when determining an Ehcache logging strategy in the first place. Hope this will generate some thoughts that will point you in the right direction.
Mary

sanne.grinovero · **Posted:** Sun Mar 27, 2011 6:32 pm

to java_dev_4 : nice that you try to be helpful, but take in consideration that you're answering to a 6 years old thread. I'm sure SLF4J wasn't used then.

to langmar: configuration rules changed, you likely disabled the cache. Check the reference for the specific version of Hibernate and EHCache you're using. BTW I don't think EHCache2 was tested with hibernate 3.5

Mary, I appreciate help on the forums, but please keep spam and marketing material out of here.