In the ehcache.xml file you need to change the default cache time. The file is in the cfusion/lib directory. At the end of the xml file in the defaultcache section change the timeToIdleSeconds and timeToLiveSeconds both to "0". The current setting makes the cache timeout in a day. Once you change the file restart CF and you should be good to go. You may need to stop CF to edit the file in some occurances.
Thanks. I will give it a try. I was under the impression that the default timeout in cacheput (according to the documentation) is forever.
Unfortunately the documentation is wrong. The ehcache default is to not timeout but it was apparently changed.
I changed ehcache.xml and the cache has been running for a few days without timing out. So that's great. But one thing I still don't understand. I keep refreshing the cacheGetMetaData( "myObject" ) and I noticed that the cache_misscount number keeps increasing. According to the documentation, this is "Number of times the object was requested, but was not in the cache or was not up to date (was stale)". I didn't think that the object is stale since I had set the time out to eternity. And if the object isn't in the cache, may application would have thrown an error (which did not happen). So I am not quite sure what this number mean. Most importantly, does this suggest that caching is not 100% reliable in providing access to your stored variables?