使用泛型的聪明缓存？

Question

Are there any clever layers out there to sit on top of the System.Web.Caching.Cache class to handle simple scenarios to fetch items using generics.

I'd like to maybe provide a delegate function to retrieve an item, and be able to fetch an item with a strongly typed GetItem and a delegate function to retrieve an item if it isnt found.

For instance

 CleverCache<K, T> 
 T GetItem(K)

 RegisterDelegate(FetchItemDelegate<K,T>)

I'd also like a nice way to handle a cache that only ever handles a single object.

The ASP.NET Cache object just seems really primitive. It just seems like a hashtable with a timeout. They may as well just call it HashtableWithTimeout for all I care. I want some better astraction. Is this the kind of thing that the caching application block will do for me?

Yes I know this is fairly simple code, i just dont have time for any wheel reinventing right now.

Answer 1

You may want to look into some more sophisticated cache providers that can wrap the ASP.NET cache, such as the Enterprise Library 's caching block. It provides a much more robust and rich caching story for object lifecycle, invalidation, retrieval, etc.

The ASP.NET cache deserves more credit than you give it - it's actually a very powerful base. Alone, it doesn't do anything complex as you have pointed out, but it is well-designed and robust enough to support some pretty cool stuff.

Answer 2

You may want to look into SharedCache and Microsoft Velocity as improvements to the basic caching available in ASP.NET. I don't know how extensively strong typing is designed into either - but from the samples and documentation I've seen it's better than the ASP.NET Cache.