Timeout cache using .Net 4 and parallel collections

Question

How to implement a cache class that supports timeouts using new .Net 4 concurrent collections?

A cache class typically contains hundreds of thousands of records. A very large part of the cache can expire at the same time.

Unlike a typical web cache, which may decrease due to memory pressure, this class should automatically delete objects if they time out.

Answer 1

Why do you need to implement your own caching class? Isn't that a standard implementation? There's a whole new build designed for caching in .NET 4.0 . Example of caching a value for 10 minutes:

var cache = MemoryCache.Default;
cache.Add("key", new object(), DateTime.Now.AddMinutes(10));

Answer 2

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