ehcache warning message " No configuration found"

Question

I have got following warning when the application start up.

2009-05-13 09:19:41,171 WARN  net.sf.ehcache.config.Configurator - No configuration found. Configuring ehcache from ehcache-failsafe.xml found in the classpath:jar:file:/app/java/lib/ehcache-1.1.jar!/ehcache-failsafe.xml  

I found encache code in following url .. ConfigurationFactory Code

Application is trying to load ehcache.xml but could not find the file so then it loads ehcache-failsafe.xml.I would like to know does this cause any problem to application ? what is impact loading ehcache-failsafe.xml ?

Tramway

Answer 1

Loading ehcache-failsafe.xml doesn't cause a problem per se; however it most likely isn't optimal for your application.

There's no way for EhCache developers to know what you intend to cache; thus ehcache-failsafe.xml included in distribution attempts to provide some "lowest common denominator" settings that would work more or less OK in most cases. You get a warning as a reminder to specify configuration that would be more appropriate for your specific needs.

Debauchery

Answer 2

ehcache.xml should be introduced in your classpath and specifically in WEB-INF/classes/. Then, you can specify your needs in it according to your environment.

This is an example:

<?xml version="1.0" encoding="UTF-8"?>

<ehcache>
    <diskStore path="java.io.tmpdir"/>

    <cache name="org.hibernate.cache.UpdateTimestampsCache"
           maxElementsInMemory="50000"
           eternal="true"
           overflowToDisk="true"/>

    <cache name="org.hibernate.cache.StandardQueryCache"
           maxElementsInMemory="50000"
           eternal="false"
           timeToIdleSeconds="120"
           timeToLiveSeconds="120"
           overflowToDisk="true"
           diskPersistent="false"
               diskExpiryThreadIntervalSeconds="120"
           memoryStoreEvictionPolicy="LRU"
            />

    <defaultCache
            maxElementsInMemory="50000"
            eternal="false"
            timeToIdleSeconds="120"
            timeToLiveSeconds="120"
            overflowToDisk="true"
            diskPersistent="false"
            diskExpiryThreadIntervalSeconds="120"
            memoryStoreEvictionPolicy="LRU"
            />

</ehcache>

After 3 years, hope that my response can help others.

Unending

Answer 3

If you re using Ehcache as a second level cache provider for hibernate change : hibernate.cache.provider_configuration_file_resource_path with net.sf.ehcache.configurationResourceName Ehcache will be able to find your configuration then.

Tensimeter

This does not answer the original question though. The OP asked about the impact of the failsafe xml – Yurikoyursa