C#數據緩存介紹及Caching通用幫助類整理
阿新 • • 發佈:2017-05-29
能夠 eric article for generic arr stat ati cti
C#緩存主要是為了提高數據的讀取速度。由於server和應用client之間存在著流量的瓶頸,所以讀取大容量數據時,使用緩存來直接為client服務,能夠降低client與server端的數據交互。從而大大提高程序的性能。
下面為工作中經經常使用到的緩存操作公用類庫整理:
using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Caching; using System.Web.Hosting; namespace ECS.Utility { /// <summary> /// Caching 的摘要說明 /// </summary> public class Caching { /// <summary> /// 獲取當前應用程序指定CacheKey的Cache值 /// </summary> /// <param name="CacheKey"></param> /// <returns></returns>y public static object GetCache(string CacheKey) { System.Web.Caching.Cache objCache = HttpRuntime.Cache; return objCache[CacheKey]; } /// <summary> /// 設置當前應用程序指定CacheKey的Cache值 /// </summary> /// <param name="CacheKey"></param> /// <param name="objObject"></param> public static void SetCache(string CacheKey, object objObject) { System.Web.Caching.Cache objCache = HttpRuntime.Cache; objCache.Insert(CacheKey, objObject); } /// <summary> /// 設置當前應用程序指定CacheKey的Cache值 /// </summary> /// <param name="CacheKey"></param> /// <param name="objObject"></param> 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> /// 清除單一鍵緩存 /// </summary> /// <param name="key"></param> public static void RemoveKeyCache(string CacheKey) { try { System.Web.Caching.Cache objCache = HttpRuntime.Cache; objCache.Remove(CacheKey); } catch { } } /// <summary> /// 清除全部緩存 /// </summary> public static void RemoveAllCache() { System.Web.Caching.Cache _cache = HttpRuntime.Cache; IDictionaryEnumerator CacheEnum = _cache.GetEnumerator(); if (_cache.Count > 0) { ArrayList al = new ArrayList(); while (CacheEnum.MoveNext()) { al.Add(CacheEnum.Key); } foreach (string key in al) { _cache.Remove(key); } } } /// <summary> /// 以列表形式返回已存在的全部緩存 /// </summary> /// <returns></returns> public static ArrayList ShowAllCache() { ArrayList al = new ArrayList(); System.Web.Caching.Cache _cache = HttpRuntime.Cache; if (_cache.Count > 0) { IDictionaryEnumerator CacheEnum = _cache.GetEnumerator(); while (CacheEnum.MoveNext()) { al.Add(CacheEnum.Key); } } return al; } } }
C#數據緩存介紹及Caching通用幫助類整理