Any Java caches that can limit memory usage of in-memory cache, not just instance count?

Question

I am looking for a simple in-memory (and in-process) cache for short-term caching of query data (but short-term meaning beyond request/response, i.e. session boundary). EhCache

Answer 1

As well as guessing the memory usage of the object, for a reasonable algorithm you would also need to guess the cost of recreating it. A reasonable guess would be the cost of recreation is roughly proportional to memory size. So the factors cancel each other out and you need neither. A simple algorithm is probably going to work out better.