August 5, 2010
ColdFusion 9.0.1 added a new function called cacheGetSession() that returns the underlying cache object for Ehcache. What's really cool about this is that it allows you to get at just about all of the features available in Ehcache that aren't directly exposed to ColdFusion through built-in functions.
I was recently working on some example code for an upcoming caching presentation when I ran into a situation where I wanted to get a list of all caches that had been created on the server, including custom caches I had created myself. One simple line of code is all it took:
What you should note here is that even though I'm telling cacheGetSession() to get the cache object for the default object cache, getCacheManager() exposes a method called getCacheNames() which returns an array of cache names for the instance of cache manager. In the case of ColdFusion's Ehcache implementation, ColdFusion instantiates cacheManager as a singleton such that all caches are managed by the single cache manager. When you call getCacheNames(), it will return you a list of all caches currently implemented on the instance of ColdFusion.
While this may not be an issue for many people, if you are on a shared server it may be a concern. The only way to disable this is to disable the cacheGetSession() function using sandbox security.