Performance Counters to track specifics instance of MemoryCache

Hello,

I use multiple instance of MemoryCache in my application.

I like to track typical Cache related performance counters such as Cache Hit Ratio for each instance of MemoryCache. How can I do that?

Please note that MemoryCache is new in .NET 4.0 and this question is not related classic ASP.NET cache counters.

Thank you,