There should be some implementation behind that "strategy" anyway.
That is the interesting part since I do not want reinvent CLHM stuff.
BTW. CLHM implements java.util.concurrent.ConcurrentMap, so I think it
is a safe interface for replacement in the future (e.g. to
https://github.com/ben-manes/caffeine when we have jdk8-minimum
builds)
PS. sorry for the strange reply with empty subject.
Vladimir