Global
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.SessionState;

using Memcached.ClientLibrary;
using log4net;

namespace Forum.UI
{
    public class Global : System.Web.HttpApplication
    {
        protected static ILog AppLog = LogManager.GetLogger(typeof(Global));

        public override void Init()
        {
            this.Error += new EventHandler(Application_Error);
            base.Init();
        }


        protected void Application_Error(object sender, EventArgs e)
        {
#if !DEBUG
            Exception ex = Server.GetLastError();
            AppLog.Error(ex.Message, ex);
            Server.ClearError();
            Response.Redirect("~/error/500.htm", true);
#endif
        }

        protected void Application_Start(object sender, EventArgs e)
        {
            SetupMemcachedClient();
        }

        protected void Application_End(object sender, EventArgs e)
        {
            ShutdownMemecachedClient();
        }


        RemoteCache#region RemoteCache
        private static MemcachedClient mc = null;
        private const string MEMCACHED_INSTANCE_NAME = "Memcached-Forum";


        /**//// <summary>
        /// 返回MemcachedClient是否可用
        /// </summary>
        public bool IsRemoteCacheAvailable
        {
            get
            {
                return mc != null;
            }
        }


        /**//// <summary>
        /// 外部访问入口
        /// </summary>
        public MemcachedClient RemoteCache
        {
            get
            {
                return mc;
            }
        }

        /**//// <summary>
        /// 关闭占用的tcp端口资源
        /// </summary>
        private void ShutdownMemecachedClient()
        {
            SockIOPool pool = SockIOPool.GetInstance(MEMCACHED_INSTANCE_NAME);
            if (pool != null) pool.Shutdown();
        }

        /**//// <summary>
        /// 启动memcachedClient，给client赋予指定参数
        /// </summary>
        private void SetupMemcachedClient()
        {
            string memcachedServers = ConfigurationManager.AppSettings["memcachedServers"];
            string[] servers = memcachedServers.Split(';');
            SockIOPool pool = SockIOPool.GetInstance(MEMCACHED_INSTANCE_NAME);
            pool.SetServers(servers);

            pool.InitConnections = 3;
            pool.MinConnections = 3;
            pool.MaxConnections = 5;

            pool.SocketConnectTimeout = 1000;
            pool.SocketTimeout = 3000;

            pool.MaintenanceSleep = 30;
            pool.Failover = true;

            pool.Nagle = false;
            pool.Initialize();

            mc = new MemcachedClient();
            mc.PoolName = MEMCACHED_INSTANCE_NAME;
            mc.EnableCompression = false;
        }
        #endregion


    }
}

PageBase
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Web.Caching;
using Memcached.ClientLibrary;
using System.Collections.Generic;

using log4net;
using Forum.Models;
using Forum.UI.Proxy;

namespace Forum.UI
{
    public class PageBase : Page
    {
        #region RemoteCache & IsRemoteCacheAvailable

protected MemcachedClient RemoteCache
        {
            get
            {
                if (HttpContext.Current.ApplicationInstance == null) return null;
                Global appInstance = HttpContext.Current.ApplicationInstance as Global;
                if (appInstance == null) return null;

return appInstance.RemoteCache;
            }
        }

protected bool IsRemoteCacheAvailable
        {
            get
            {
                return RemoteCache != null;
            }
        }
        #endregion
        
    }
}