using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Web;

using System.Web.Caching;

namespace Utility

{

    /// <summary>

    /// 缓存操作,默认缓存1分钟

    /// </summary>

    public static class CacheHelper

    {

        static int cacheTime = 1;

        /// <summary>

        /// 读取缓存项

        /// </summary>

        /// <returns></returns>

        public static object CacheReader(string cacheKey)

        {

            return HttpRuntime.Cache[cacheKey];

        }

        /// <summary>

        /// 写入缓存项

        /// </summary>

        public static void CacheWriter(string cacheKey, object cacheValue, int cache_time = 0)

        {

            HttpRuntime.Cache.Insert(cacheKey, cacheValue, null,

                DateTime.Now.AddMinutes(cache_time <= 0 ? cacheTime : cache_time),

                Cache.NoSlidingExpiration);

        }

        /// <summary>

        /// 移除指定缓存项

        /// </summary>

        public static void CacheRemove(string cacheName)

        {

            HttpRuntime.Cache.Remove(cacheName);

        }

        /// <summary>

        /// 缓存对象泛型实现

        /// </summary>

        public static T ObjectReader<T>(string cacheKey = null)

            where T : class

        {

            string cachekey = typeof(T).GetHashCode() + StringHelper.ToString(cacheKey);

            var obj = CacheReader(cachekey) as T;

            return obj;

        }

        /// <summary>

        /// 缓存对象泛型实现

        /// </summary>

        public static void ObjectWriter<T>(T cacheValue, string cacheKey = null, int cache_time = 0)

            where T : class

        {

            string cachekey = typeof (T).GetHashCode() + StringHelper.ToString(cacheKey);

            CacheWriter(cachekey, cacheValue, cache_time);

        }

    }

}