mvcアプリケーションでキャッシュを使用する

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mvcWebアプリケーションのキャッシュについて質問があります。このように頻繁に使用される多くのリストを保存するためにキャッシュを使用したい

List<IncotermDTO> incoterm;
             string keyIncoterm = "listaIncoterm";
             if (!CacheHelper.Get(keyIncoterm, out incoterm))
            {
                incoterm = BLIncoterm.GetIncoterm(null, null);
                CacheHelper.Add(incoterm, keyIncoterm);
            }
            ViewBag.listaIncoterm = new SelectList(incoterm.OrderBy(x => x.DESCRIPTION), "ID", "DESCRIPTION");

この記事のヒントに従ってくださいhttp://johnnycoder.com/blog/2008/12/10/c-cache-helper-class/

これはクラスヘルパーです

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Caching;

namespace GestioneMovimentazioni
{
    public static class CacheHelper
    {
        /// <summary>
        /// Insert value into the cache using
        /// appropriate name/value pairs
        /// </summary>
        /// <typeparam name="T">Type of cached item</typeparam>
        /// <param name="o">Item to be cached</param>
        /// <param name="key">Name of item</param>
        public static void Add<T>(T o, string key)
        {
            // NOTE: Apply expiration parameters as you see fit.
            // I typically pull from configuration file.

            // In this example, I want an absolute
            // timeout so changes will always be reflected
            // at that time. Hence, the NoSlidingExpiration.
            HttpContext.Current.Cache.Insert(
                key,
                o,
                null,
                System.Web.Caching.Cache.NoAbsoluteExpiration,
                TimeSpan.FromSeconds(120));
        }

        /// <summary>
        /// Remove item from cache
        /// </summary>
        /// <param name="key">Name of cached item</param>
        public static void Clear(string key)
        {
            HttpContext.Current.Cache.Remove(key);
        }

        /// <summary>
        /// Check for item in cache
        /// </summary>
        /// <param name="key">Name of cached item</param>
        /// <returns></returns>
        public static bool Exists(string key)
        {
            return HttpContext.Current.Cache[key] != null;
        }

        /// <summary>
        /// Retrieve cached item
        /// </summary>
        /// <typeparam name="T">Type of cached item</typeparam>
        /// <param name="key">Name of cached item</param>
        /// <param name="value">Cached value. Default(T) if
        /// item doesn't exist.</param>
        /// <returns>Cached item as type</returns>
        public static bool Get<T>(string key, out T value)
        {
            try
            {
                if (!Exists(key))
                {
                    value = default(T);
                    return false;
                }

                value = (T)HttpContext.Current.Cache[key];
            }
            catch
            {
                value = default(T);
                return false;
            }

            return true;
        }


        public static T Get<T>(string key) where T : class
        {
            try
            {
                return (T)HttpContext.Current.Cache[key];
            }
            catch
            {
                return null;
            }
        }




    }
}