Since we have significantly more RAM to spare than a few years ago and caching, almost by definition, is nothing but trading memory for cpu cycles. You want les

Since we have significantly more RAM to spare than a few years ago and caching, almost by definition, is nothing but trading memory for cpu cycles. You want less memory? No problem, just remove the cache and recompute everything all the time, but don't cry if it takes time. If 24-48MB is trivial completely depends on what is stored in this space, i.e. is there a more efficient representation for your stated goals? Context is king. Even 5MB could be non-trivial, depending on context.