full/src/main/resources/ehcache.xml

<ehcache xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
       xsi:schemaLocation='http://ehcache.org/ehcache.xsd'>
    <defaultCache eternal='true' overflowToDisk='false'/>
    <!--maxBytesLocalHeap="200M"-->
    <diskStore path="./cache_store"/>
    
    <cache name='id_tokens'
           eternal='true'
           maxElementsOnDisk="10000000"
           memoryStoreEvictionPolicy="LRU"
           maxEntriesLocalHeap="50"
           overflowToDisk='true'/>

    <cache name='auth_codes'
           timeToIdleSeconds="600"
           eternal='false'
           memoryStoreEvictionPolicy="LRU"
           maxEntriesLocalHeap="100"
           overflowToDisk='false'/>

    <cache name='resources'
           eternal='false'
           overflowToDisk='false'
           maxEntriesLocalHeap="60"
           timeToIdleSeconds="172800"
           diskSpoolBufferSizeMB="30"
           diskExpiryThreadIntervalSeconds="120"
           memoryStoreEvictionPolicy="LRU"
           statistics="false"/>
           
           
    <!-- EM --> 
    <cache name='authorization'
           timeToLiveSeconds="1000"
           eternal='false'
           memoryStoreEvictionPolicy="LRU"
           maxEntriesLocalHeap="100"
           overflowToDisk='false'/>
           
    <cache name='access_token'
           timeToIdleSeconds="3600"
           timeToLiveSeconds="15000"
           eternal='false'
           memoryStoreEvictionPolicy="LRU"
           maxEntriesLocalHeap="500"
           overflowToDisk='false'/>          
</ehcache>