集中式方法来清空ASP.NET中的Cache对象

Question

I have to maintain an old asp.net application, and need to disable all access to the Cache object for debugging purposes. There are hundreds of pages that use the structure:

if (Cache["myobject"] != null)
{
   //get data from the cache
   //...
}
else
{
   //go to the DB, load the cache and send it to the client
}

I know I should refactor this code but, in the meantime, do you know of any simple and centralized way to empty (or disable) the Cache object?

Answer 1

Not sure if it will be of any help, but you can play with cache settings and set, say, privateBytesLimit to 1 and privateBytesPollTime to 00:00:01 . My guess is that ASP.NET should basically remove all entries as soon as they're added. However, this might not be the case.

Answer 2

我没有使用过，但是此帮助程序可能会给您带来帮助 。

Answer 3

If you just want to clear the cache once, you can use this:

   foreach ( System.Collections.DictionaryEntry entry in HttpContext.Current.Cache )
        HttpContext.Current.Cache.Remove( entry.Key as String );

Otherwise @Anton Gogolev solution looks good to prevent new entries.