cache a httpmessage content

I would like to start caching some of the data in web API But I am getting some errors. I am using the HttpContent and storing it in cache using the CacheHelper.SaveTocache. On the next connection I am checking if it in cache then it’s creating a new httpmessage and setting the httpcontent for the new message but I am getting some errors ? How can I cache a httpmessage?

Errors when trying to get the data from cache

Error: read ECONNRESET
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Controller

    public class UserDataController : ApiController
    {
        [System.Web.Http.HttpGet]
        public IHttpActionResult GetUser(string accessKey, string id)
        {
   
           DateTime cacheDuration = DateTime.Now.AddSeconds(cacheDurationTime);
           string cacheKey = String.Format("{0}_{1}", accessKey, id);
           if (CacheHelper.GetObjectFromCach(cacheKey) != null){
              var cacheContent = CacheHelper.GetFromCache<HttpContent>(cacheKey);

              var response = this.Request.CreateResponse(HttpStatusCode.OK);
              response.Content = cacheContent;

              return ResponseMessage(response);

          else {
            var Results = User.UserFromId(id);

            CacheHelper.SaveTocache(cacheKey, Results.Content, cacheDuration);
            return ResponseMessage(Results);
       
          }
        }

    }

Helpers

   public static void SaveTocache(string cacheKey, object savedItem, DateTime absoluteExpiration)
   {
        MemoryCache.Default.Add(cacheKey, savedItem, absoluteExpiration);
   }


   public static T GetFromCache<T>(string cacheKey) where T : class
   {
        return MemoryCache.Default[cacheKey] as T;
   }