tracker issue : CF-3669336

Problem Description:

When configured to overflow to disk, calling cachegetallids() is very slow with only a few thousand items in cache.  Review the ehcache configuration in the "Test Configuration" section.

Steps to Reproduce:
<cfset start = getTickCount()>
<cfset cacheids = cachegetallids('mycache')>
<cfdump var="#ArrayLen(cacheids)#" />
<cfdump var="#getTickCount() - start#" />

Actual Result:
With 4000 items in the cache, I'm benchmarking 23583ms response times.

Expected Result:
Using the workaround below on the same dataset and calling the ehcache java object directly, it responds in only 5ms.  I would expect the ColdFusion method to be comparable.

Any Workarounds:
Yes, call the getKeys() method off of the core ehcache java object: 
<cfset cache = cacheGetSession('mycache', 'true')>
<cfdump var="#ArrayLen(cache.getKeys())#"/>

----------------------------- Additional Watson Details -----------------------------

Watson Bug ID:	3669336

External Customer Info:
External Company:  
External Customer Name: mgrove40
External Customer Email:  
External Test Config: My Hardware and Environment details:



ehcache.xml configuration:

    	name="mycache"

        maxElementsInMemory="1"

        eternal="false"

        timeToIdleSeconds="86400"

        timeToLiveSeconds="86400"

        overflowToDisk="true"

        diskSpoolBufferSizeMB="30"

        maxElementsOnDisk="100000"

        diskPersistent="true"

        diskExpiryThreadIntervalSeconds="3600"

        memoryStoreEvictionPolicy="LRU"

        />

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