caching in .net system.runtime.caching example

 
using System.Runtime.Caching;
public class UseCacheSample {
        private static void UseCacheSampleMethod()
        {

            Demo demo;
            ObjectCache cache = MemoryCache.Default;
            if (cache.Contains("demo"))
            {
                demo = (Demo)cache.Get("demo");
            }
            else
            {
                demo = new Demo();
                demo.SetTimes();
                cache.Add("demo", demo, new CacheItemPolicy());
            }

        }
}