C# 緩存基本操作 CacheHelper.cs

CacheHelper.cs

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

namespace ZZAYwebservice.wechat
{
    public class CacheHelper
    {

        /// <summary>
        /// 讀取緩存數據
        /// </summary>
        /// <param name="cacheKey">鍵</param>
        /// <returns></returns>
        public static object GetCache(string cacheKey)
        {
            var objCache = HttpRuntime.Cache.Get(cacheKey);
            return objCache;
        }

        /// <summary>
        /// 設置緩存數據
        /// </summary>
        /// <param name="cacheKey">鍵</param>
        /// <param name="content">值</param>
        public static void SetCache(string cacheKey, object content)
        {
            var objCache = HttpRuntime.Cache;
            objCache.Insert(cacheKey, content);
        }

        /// <summary>
        /// 設置緩存數據並且設置默認過期時間
        /// </summary>
        /// <param name="cacheKey"></param>
        /// <param name="content"></param>
        /// <param name="timeOut"></param>
        public static void SetCache(string cacheKey, object content, int timeOut = 3600)
        {
            try
            {
                if (content == null)
                {
                    return;
                }
                var objCache = HttpRuntime.Cache;
                //設置絕對過期時間
                //絕對時間過期。DateTime.Now.AddSeconds(10)表示緩存在3600秒後過期，TimeSpan.Zero表示不使用平滑過期策略。
                objCache.Insert(cacheKey, content, null, DateTime.Now.AddSeconds(timeOut), TimeSpan.Zero, CacheItemPriority.High, null);
                //相對過期
                //DateTime.MaxValue表示不使用絕對時間過期策略，TimeSpan.FromSeconds(10)表示緩存連續10秒沒有訪問就過期。
                //objCache.Insert(cacheKey, objObject, null, DateTime.MaxValue, timeout, CacheItemPriority.NotRemovable, null); 
            }
            catch (Exception)
            {

                throw;
            }
        }

        /// <summary>
        /// 移除指定緩存
        /// </summary>
        /// <param name="cacheKey">鍵</param>
        public static void RemoveAllCache(string cacheKey)
        {
            var objCache = HttpRuntime.Cache;
            objCache.Remove(cacheKey);
        }

        /// <summary>
        /// 刪除全部緩存
        /// </summary>
        public static void RemoveAllCache()
        {
            var objCache = HttpRuntime.Cache;
            var cacheEnum = objCache.GetEnumerator();
            while (cacheEnum.MoveNext())
            {
                objCache.Remove(cacheEnum.Key.ToString());
            }
        }
    }
}

調用方法：

        /// <summary>
        /// 初始化，序列化
        /// </summary>
        public void Initialize()
        {
            object msg = CacheHelper.GetCache("NApptoken");
            if (msg == null)
            {
                var tokenResult = iSVOpenInterfaceProxy.GetAppToken(new com.tencent.healthcard.HealthOpenAuth.CommonIn
                {
                    requestId = System.Guid.NewGuid().ToString(),
                    hospitalId = LxAppConfig.GetHospitalId()
                }, new GetAppTokenReq
                {

                    appId = LxAppConfig.GetAppid()
                });
                var commonOut = (com.tencent.healthcard.HealthOpenAuth.CommonOut)
                    (tokenResult["commonOut"]);

                var rsp = (GetAppTokenRsp)tokenResult["rsp"];
                appToken = rsp.appToken;

                CacheHelper.SetCache("NApptoken", rsp.appToken, 7200);
            }
            else
            {
                appToken = msg.ToString();
            }

        }