How to cache data on server in asp.net mvc 4?

I'm using MemoryCache to store query results, and it's working fine so far.
Here are a few links that I've used to implement it.
- Using MemoryCache in .NET 4.0 (codeproject)
- Using MemoryCache in .NET 4.0 (blog entry)

As I read them now, I find them not that clear, so maybe there is a better link that I've lost somewhere.
Here is a sample of my code which I hope is clear enough so that you see how it works

public static class AgencyCacheManager
{
    private static MemoryCache _cache = MemoryCache.Default;

    public static List<RefAgency> ListAgency
    {
        get
        {
            if (!_cache.Contains("ListAgency"))
                RefreshListAgency();
            return _cache.Get("ListAgency") as List<Agency>;
        }
    }

    public static void RefreshListAgency()
    {
        var listAgency = GetAllComplete();

        CacheItemPolicy cacheItemPolicy = new CacheItemPolicy();
        cacheItemPolicy.AbsoluteExpiration = DateTime.Now.AddDays(1);

        _cache.Add("ListAgency", listAgency, cacheItemPolicy);
    }
}

And to retrieve the list from cache

public Agency FindBy(string agencyId)
{
    return AgencyCacheManager.ListAgency.SingleOrDefault(x => x.AgencyPartnerCode == agencyId);
}