前段时间项目中要用到缓存已解决效率的问题，研究了一下.net中的Cache缓存，结果是研究了半天最后还是没有用这种方式，哎，很多问题从业务上就能优化，不说了

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Caching;

namespace Erp.Ship.Tool
{
    public class CacheHelper
    {
        /// <summary>
        /// 获取数据缓存
        /// </summary>
        /// <param name="cacheKey">键</param>
        public static object GetCache(string cacheKey)
        {
            var objCache = HttpRuntime.Cache.Get(cacheKey);
            return objCache;
        }
        /// <summary>
        /// 设置数据缓存
        /// </summary>
        public static void SetCache(string cacheKey, object objObject)
        {
            var objCache = HttpRuntime.Cache;
            objCache.Insert(cacheKey, objObject);
        }
        /// <summary>
        /// 设置数据缓存
        /// </summary>
        public static void SetCache(string cacheKey, object objObject, int timeout = 7200)
        {
            try
            {
                if (objObject == null) return;
                var objCache = HttpRuntime.Cache;
                //相对过期
                //objCache.Insert(cacheKey, objObject, null, DateTime.MaxValue, timeout, CacheItemPriority.NotRemovable, null);
                //绝对过期时间
                objCache.Insert(cacheKey, objObject, null, DateTime.Now.AddSeconds(timeout), TimeSpan.Zero, CacheItemPriority.High, null);
            }
            catch (Exception)
            {
                //throw;
            }
        }
        /// <summary>
        /// 移除指定数据缓存
        /// </summary>
        public static void RemoveAllCache(string cacheKey)
        {
            var cache = HttpRuntime.Cache;
            cache.Remove(cacheKey);
        }
        /// <summary>
        /// 移除全部缓存
        /// </summary>
        public static void RemoveAllCache()
        {
            var cache = HttpRuntime.Cache;
            var cacheEnum = cache.GetEnumerator();
            while (cacheEnum.MoveNext())
            {
                cache.Remove(cacheEnum.Key.ToString());
            }
        }
    }
}

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其实一提到缓存我就想到了redis缓存，所以特意了解了一下，这两者的区别，redis属于是分布式缓存，Cache只能是单体的，平常的业务管理系统，Cache够用了，redis肯定是功能更加强大的,我了解的也不多