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

1 using System; 2 using System.Collections; 3 using System.Collections.Generic; 4 using System.Linq; 5 using System.Text; 6 using System.Threading.Tasks; 7 using System.Web; 8 using System.Web.Caching; 9 namespace WebSite.Statistics.Core.Utilities10 {11     /// 
12     /// 缓存辅助类13     /// 
14     public static class CacheHelper15     {16         /// 
17         /// 根据键获取缓存数据18         /// 
19         /// 20         /// 
     21         public static object GetCache(string cacheKey)22         {23             Cache objCache = HttpRuntime.Cache;24             return objCache.Get(cacheKey);25         }26         /// 
27         ///  设置缓存28         /// 
29         /// 缓存键30         /// 缓存键31         public static void SetCache(string cacheKey, object objValue)32         {33             Cache cache = HttpRuntime.Cache;34             cache.Insert(cacheKey, objValue);35         }36         /// 
37         /// 设置缓存38         /// 
39         /// 缓存键40         /// 缓存的值41         /// 过期时间42         public static void SetCache(string cacheKey, object objValue, TimeSpan timeout)43         {44             Cache cache = HttpRuntime.Cache;45             cache.Insert(cacheKey, objValue, null, DateTime.MaxValue, timeout, System.Web.Caching.CacheItemPriority.NotRemovable, null);46         }47         /// 
48         /// 设置缓存49         /// 
50         /// 缓存键51         /// 缓存的value52         /// 绝对过期时间53         /// 滑动过期时间54         public static void SetCache(string cacheKey, object objValue, DateTime absoluteExpiration, TimeSpan slidingExpiration)55         {56             Cache cache = HttpRuntime.Cache;57             cache.Insert(cacheKey, objValue, null, absoluteExpiration, slidingExpiration);58         }59         /// 
60         /// 移除指定的缓存61         /// 
62         /// 63         public static void RemoveCache(string cacheKey)64         {65             System.Web.Caching.Cache cache = HttpRuntime.Cache;66             cache.Remove(cacheKey);67         }68         /// 
69         /// 移除全部缓存70         /// 
71         public static void RemoveAllCache()72         {73             System.Web.Caching.Cache cache = HttpRuntime.Cache;74             IDictionaryEnumerator CacheEnum = cache.GetEnumerator();75             while (CacheEnum.MoveNext())76             {77                 cache.Remove(CacheEnum.Key.ToString());78             }79         }80     }81 }

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。