Function Cache is Static - Bug or Expected Behavior?

dev
1

Function Cache (a-la cachedWithin) seems to ignore the state of an object. It seems that the key is based on the Component’s path and arguments, resulting in a “static” behavior, where all instances of the Component share the same cache key.

Consider the following:

/** FunctionCacheTest.cfc */
component {

	function init(uri){
		this.uri = arguments.uri;
	}

	function test() cachedWithin=createTimespan(0,0,1,0){
		http url=this.uri result="local.httpRes";
		return httpRes;
	}
}

And the following pseudo-code that calls the test() method on two different instances:

test1 = new FunctionCacheTest("https://www.google.com/");
test2 = new FunctionCacheTest("http://lucee.org/");

assertFalse(test1.test().fileContent == test2.test().fileContent);

I expected each instance to keep its own “cache”, but that’s not what happens. test2.test() returns the result from google.com

I opened a ticket for this as a bug, but TBH I’m not sure if it is a bug or if that is the expected behavior, or how ACF behaves on that (perhaps someone knows or has an ACF installation handy to test):
https://luceeserver.atlassian.net/browse/LDEV-1348