Cache

http://www.cnblogs.com/kissdodog/archive/2013/05/07/3064895.html

using System.Web;

public sealed class Cache : IEnumerable{}

namespace ConsoleApplication1
{
    class Person
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Person person = new Person { Id = 1, Name = "诸葛亮" };
            Cache cache = HttpRuntime.Cache;
           /* //cache = HttpContext.Current.Cache;
            cache.Insert("AA",person);
            cache.Insert("BB","字符串");

            Console.WriteLine(cache.Get("BB").ToString());
            Person p = cache["AA"] as Person;
            if (p!=null)
            {
                Console.WriteLine(p.Id+","+p.Name);
            }
            Console.WriteLine(cache.EffectivePercentagePhysicalMemoryLimit);
            Console.WriteLine(cache.EffectivePrivateBytesLimit);
            Console.WriteLine(cache.Count);
            Console.WriteLine(cache["BB"]);
            cache.Remove("BB");
            Console.WriteLine(cache["BB"]);
            foreach (var item in cache)
            {
                Console.WriteLine(item.GetType()+"\t");
            }
            Console.WriteLine("");

            cache.Insert("CC","依赖项测试",new CacheDependency(@"d:\123.txt"));
            Console.WriteLine(cache["CC"]);
            //Console.ReadLine();
            //Console.WriteLine(cache["CC"]);
            Console.ReadLine();
            Console.WriteLine(cache["CC"]);

            cache.Insert("DD","绝对过期时间测试",null,DateTime.Now.AddSeconds(2),System.Web.Caching.Cache.NoSlidingExpiration);
            Console.WriteLine(cache["DD"]);
            //Thread.Sleep(3*1000);
            //Console.WriteLine(cache["DD"]);
            Thread.Sleep(2 * 1000);
            Console.WriteLine(cache["DD"]);

            cache.Insert("EE", "滑动过期时间", null, System.Web.Caching.Cache.NoAbsoluteExpiration, TimeSpan.FromSeconds(2));
            Console.WriteLine(cache["EE"]);
           // Console.ReadLine();
            //Thread.Sleep(4*1000);
            System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
            //sw.Start();
            Console.WriteLine(cache["EE"]);
            Thread.Sleep(1*1000);
            Thread.Sleep(600);
            Console.WriteLine(cache["EE"]);
            //for (int i = 0; i < 5000; i++)
            //{
            //    Console.Write(i+",");
            //}
            //Console.WriteLine();
           // sw.Stop();
            //Console.WriteLine(sw.ElapsedMilliseconds);
            sw.Start();
            Console.WriteLine(cache["EE"]);
            Thread.Sleep(1*1000);
            Thread.Sleep(600);
            sw.Stop();
            Console.WriteLine(sw.ElapsedMilliseconds);
            Console.WriteLine(cache["EE"]);*/

            cache.Add("MyData", "缓存移除通知", null, DateTime.Now.AddSeconds(2), Cache.NoSlidingExpiration, CacheItemPriority.Low,
                (string key, object value, CacheItemRemovedReason reson) => { Cache ca = HttpRuntime.Cache; ca.Insert("MyData", "缓存被清空了"); });
            Console.WriteLine(cache["MyData"]);
            Thread.Sleep(2*1000);
            Console.WriteLine(cache["MyData"]);
            Console.ReadLine();
        }

    }
}