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I'm using the ASP.net cache in a web project, and I'm writing a "status" page for it which shows the items in the cache, and as many statistics about the cache as I can find. Is there any way that I can get the total size (in bytes) of the cached data? The size of each item would be even better. I want to display this on a web page, so I don't think I can use a performance counter.
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The default data cache size is an absolute value, and the minimum size for the cache size is 256 times the logical page size; for 2KB, the minimum is 512KB: for 16KB, the minimum is 4MB. The default value is 8MB.
The maximum theoretical cache size is 2 GB.
The cached data is stored in server memory. Class Caching : Web pages or web services are compiled into a page class in the assembly, when run for the first time. Then the assembly is cached in the server.
I am looking at my performance monitor and under the ASP.NET Apps v2.0.50727 category I have the following cache related counters:
Cache % Machine Memory Limit Used
Cache % Process Memory Limit Used
There are also a lot of other cache related metrics under this category.
These should be able to get you the percentage, then if you can get the total allowed with Cache.EffectivePrivateBytesLimit or some other call you should be able to figure it out. I do not have personal experience with these counters so you will have to do some research and testing to verify.
Here is a quick start article on reading from performance counters: http://quickstart.developerfusion.co.uk/quickstart/howto/doc/PCRead.aspx
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