[工具类]缓存辅助类

写在前面

在项目中的统计模块中，查询耗费的时间，实在是太长了，通过优化sql语句或者添加缓存来提高查询的速度，自己就弄了一个缓存的辅助类，方便操作缓存中的数据。

CacheHelper

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Web.Caching;
namespace WebSite.Statistics.Core.Utilities
{
    /// <summary>
    /// 缓存辅助类
    /// </summary>
    public static class CacheHelper
    {
        /// <summary>
        /// 根据键获取缓存数据
        /// </summary>
        /// <param name="cacheKey"></param>
        /// <returns></returns>
        public static object GetCache(string cacheKey)
        {
            Cache objCache = HttpRuntime.Cache;
            return objCache.Get(cacheKey);
        }
        /// <summary>
        ///  设置缓存
        /// </summary>
        /// <param name="cacheKey">缓存键</param>
        /// <param name="objValue">缓存键</param>
        public static void SetCache(string cacheKey, object objValue)
        {
            Cache cache = HttpRuntime.Cache;
            cache.Insert(cacheKey, objValue);
        }
        /// <summary>
        /// 设置缓存
        /// </summary>
        /// <param name="cacheKey">缓存键</param>
        /// <param name="objValue">缓存的值</param>
        /// <param name="timeout">过期时间</param>
        public static void SetCache(string cacheKey, object objValue, TimeSpan timeout)
        {
            Cache cache = HttpRuntime.Cache;
            cache.Insert(cacheKey, objValue, null, DateTime.MaxValue, timeout, System.Web.Caching.CacheItemPriority.NotRemovable, null);
        }
        /// <summary>
        /// 设置缓存
        /// </summary>
        /// <param name="cacheKey">缓存键</param>
        /// <param name="objValue">缓存的value</param>
        /// <param name="absoluteExpiration">绝对过期时间</param>
        /// <param name="slidingExpiration">滑动过期时间</param>
        public static void SetCache(string cacheKey, object objValue, DateTime absoluteExpiration, TimeSpan slidingExpiration)
        {
            Cache cache = HttpRuntime.Cache;
            cache.Insert(cacheKey, objValue, null, absoluteExpiration, slidingExpiration);
        }
        /// <summary>
        /// 移除指定的缓存
        /// </summary>
        /// <param name="cacheKey"></param>
        public static void RemoveCache(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());
            }
        }
    }
}

总结

缓存用到的地方很多，封装的这个类，也算很基础的东西了，算是记录一下，以后用到的时候，方便查找。