Good examples of value types

[via Digitalmars-d]

On Wednesday, 6 May 2015 at 02:07:40 UTC, deadalnix wrote:
> Let me tell you an actual war story of mine.
>
> We have this program that is computationally intensive written 
> in java. Somewhere in the core of the program, we have a LRU 
> cache, with some entries sticking in there, and most entry 
> getting evicted soon enough (typical pareto kind of thing).
>
> Problem is, all these entries needs to be value types (we are 
> in java) and, by the time things gets evicted from the LRU 
> cache, they have moved to the old generation.
>
> The whole damn thing generate a ton of garbage.
>
> The obvious solution is to use value types in the cache, but 
> that not possible. I won't go in the details, but that was a 
> really hard problem to solve, that kept us busy for for longer 
> then it should have because of language limitations.
>
> Long story short: value types are useful.

That's sounds like a great story! What kind of "values" were you 
caching?