Entity Framework - Second Level Caching with DbContext

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using SecondLevelCaching.Data;
using SecondLevelCaching.Data.Models;
using SecondLevelCachingExample.Models;

namespace SecondLevelCachingExample.Controllers
{
    public class HomeController : Controller
    {
        private readonly IDbContext dataContext;

        public HomeController(IDbContext context)
        {
            this.dataContext = context;
        }

        public ActionResult Index()
        {
            var model = GetHomeModel(string.Empty);
            return View(model);
        }

        [HttpPost]
        public ActionResult Index(string searchTerm)
        {
            var model = GetHomeModel(searchTerm);
            return View("Index", model);
        }

        private HomeViewModel GetHomeModel(string searchTerm)
        {
            var query = dataContext.Table<Customer>();
            if (!string.IsNullOrEmpty(searchTerm))
                query = from c in query
                        where c.ContactName.Contains(searchTerm)
                        select c;

            var customerList = (from c in query
                                orderby c.ContactName
                                select new CustomerModel
                                {
                                    Id = c.CustomerID,
                                    Name = c.ContactName
                                })
                                .ToList();

            var model = new HomeViewModel(customerList,
                EntityCache.Instance.CacheHits,
                EntityCache.Instance.CacheMisses,
                EntityCache.Instance.CacheItemAdds);

            return model;
        }
    }
}