How does MemoryCache know how much memory it uses?

Question

The class MemoryCachein .netshould supplant elements whenever the amount of used memory exceeds a certain limit.

How does it determine the amount of memory that its elements use?

Answer 1

MemoryCachehas an internal CacheMemoryMonitorone that periodically requests its links, how large they are. It uses an internal type in mscorlib called SizedReference, which is a link that also keeps track of how much memory (approximately) its target uses.

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