Hi,

 Here's a MVC C# cache helper I found here https://stackoverflow.com/questions/343899/how-to-cache-data-in-a-mvc-application, but I've modified it to take in account all data types and not only classes...

public static class InMemoryCache
    {
        public static T GetOrSet<T>(string cacheKey, Func<T> getItemCallback)
        {
            if (HttpContext.Current == null || HttpContext.Current.Cache == null)
                return getItemCallback();
 
            bool cacheExists = HttpContext.Current.Cache[cacheKey] != null;
            T item;
            if (cacheExists)
                item = (T)HttpContext.Current.Cache[cacheKey];
            else {
                item = getItemCallback();
                if (item != null)
                    HttpContext.Current.Cache.Insert(cacheKey, item, null, DateTime.UtcNow.AddDays(1), Cache.NoSlidingExpiration);
            }
            return item;
        }
    }

public static Dictionary<string, string> getTipsCategory()
        {
            return InMemoryCache.GetOrSet("getTipsCategory", () =>
            {
                return db
                    .BlogCategory
                    .Where(c => c.BlogEntry.Count() > 0)                    
                    .ToDictionary(c=>c.Name, c=>c.url);                
            });            
        }