Caching using static members

There is an interesting post that has proved useful covering the use of static lists in static class to cache.

   public static partial class Store
   {
        private static StringDictionary cacheCollection;

        // The static constructor is used to load the list, static
        // constructor is called only once
        // If the 'collection' is to be modified after load, 
        // then careful consideration is required around thread safety!
        static Store()
        {
            LoadCacheCollection();
        }

        private static void LoadCacheCollection() {
            
            cacheCollection.Add(...);
            .
            .
            return;
        }

   }

This method could be refactored such that the code required to manage the collection exists in a base assembly and the collection itself and anything specific exists in an assembly inheriting from the base.
Note: A static variable can be copied to an instance variable without extra memory being allocated (i.e. the pointer is moved, without a copy being made).