Generic get/set operation for types that are stored in the <see cref="MemoryCache"/>

GetFromMemoryCache.cs

public static T GetFromMemoryCache<T>(string key, int cacheTime, Func<T> whenKeyNotFound)
{
    var items = MemoryCache.Default;

    if (items[key] != null)
    {
        // return from cache
        return (T)items[key];
    }

    // return new item from caller and add to cache
    var item = whenKeyNotFound();

    //add to cache            
    items.Add(key, item, DateTime.Now.AddMinutes(cacheTime));

    return item;
}