C#数据源缓存

调用：

public List<ReRank> GetBoZhuRank(int category)
{
    return CacheHelper.TryGet("GetBoZhuRank" + category, () =>
    {
        try
        {
            return new BLL.CastRoomApi(webEntity).GetCastRoomRankList(category).Data; //调用接口获取数据
        }
        catch (Exception ex)
        {
            LogUtlilty.WriteLog(string.Format("错误：{0}", ex.Message), LogUtlilty.Level.ERROR);
        }
        return new List<ReRank>();
    }, DateTime.Now.AddMinutes(2), new List<ReRank>()); //缓存2分钟
}

 

CacheHelper帮助类：

using System;
using System.Web;
using System.Collections;

namespace LiveCast.Web.Common.Utility
{
    public class CacheHelper
    {
        /// <summary>
        /// 获取数据缓存
        /// </summary>
        /// <param name="CacheKey">键</param>
        public static object GetCache(string CacheKey)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            return objCache[CacheKey];
        }

        /// <summary>
        /// 设置数据缓存
        /// </summary>
        public static void SetCache(string CacheKey, object objObject)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject);
        }

        /// <summary>
        /// 设置数据缓存
        /// </summary>
        public static void SetCache(string CacheKey, object objObject, TimeSpan Timeout)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject, null, DateTime.MaxValue, Timeout, System.Web.Caching.CacheItemPriority.NotRemovable, null);
        }

        /// <summary>
        /// 设置数据缓存
        /// </summary>
        public static void SetCache(string CacheKey, object objObject, DateTime absoluteExpiration, TimeSpan slidingExpiration)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, objObject, null, absoluteExpiration, slidingExpiration);
        }

        /// <summary>
        /// 移除指定数据缓存
        /// </summary>
        public static void RemoveAllCache(string CacheKey)
        {
            System.Web.Caching.Cache _cache = HttpRuntime.Cache;
            _cache.Remove(CacheKey);
        }

        /// <summary>
        /// 移除全部缓存
        /// </summary>
        public static void RemoveAllCache()
        {
            System.Web.Caching.Cache _cache = HttpRuntime.Cache;
            IDictionaryEnumerator CacheEnum = _cache.GetEnumerator();
            while (CacheEnum.MoveNext())
            {
                _cache.Remove(CacheEnum.Key.ToString());
            }
        }

        public static object Get(string key, Func<object> getValueFunc, DateTime absoluteExpiration)
        {
            var val = GetCache(key);
            if (val == null)
            {
                val = getValueFunc();
                if (val != null)
                {
                    SetCache(key, val, absoluteExpiration, System.Web.Caching.Cache.NoSlidingExpiration);
                }
            }
            return val;
        }


        public static TResult TryGet<TResult>(string key, Func<TResult> getValueFunc, DateTime absoluteExpiration, TResult defaultVal)
        {
            TResult result;
            try
            {
                var val = Get(key, () => getValueFunc(), absoluteExpiration);
                if (val == null)
                {
                    val = defaultVal;
                }
                result = (TResult)val;
            }
            catch (Exception ex)
            {
                result = defaultVal;
                LogUtlilty.WriteLog(string.Format("Cache中异常:{0}", ex.Message), LogUtlilty.Level.ERROR);
            }
            return result;
        }

    }
}