C# Cache缓存读取 C# Cache缓存读取的设置方法
每天进步多一点 人气:9想了解C# Cache缓存读取的设置方法的相关内容吗,每天进步多一点在本文为您仔细讲解C# Cache缓存读取的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:c#,缓存读取,c#,Cache,下面大家一起来学习吧。
先创建一个CacheHelper.cs类,代码如下:
using System; using System.Web; using System.Collections; using System.Web.Caching; public class CacheHelper { /// <summary> /// 获取数据缓存 /// </summary> /// <param name="cacheKey">键</param> public static object GetCache(string cacheKey) { var objCache = HttpRuntime.Cache.Get(cacheKey); return objCache; } /// <summary> /// 设置数据缓存 /// </summary> public static void SetCache(string cacheKey, object objObject) { var objCache = HttpRuntime.Cache; objCache.Insert(cacheKey, objObject); } /// <summary> /// 设置数据缓存 /// </summary> public static void SetCache(string cacheKey, object objObject, int timeout = 7200) { try { if (objObject == null) return; var objCache = HttpRuntime.Cache; //相对过期 //objCache.Insert(cacheKey, objObject, null, DateTime.MaxValue, timeout, CacheItemPriority.NotRemovable, null); //绝对过期时间 objCache.Insert(cacheKey, objObject, null, DateTime.Now.AddSeconds(timeout), TimeSpan.Zero, CacheItemPriority.High, null); } catch (Exception) { //throw; } } /// <summary> /// 移除指定数据缓存 /// </summary> public static void RemoveAllCache(string cacheKey) { var cache = HttpRuntime.Cache; cache.Remove(cacheKey); } /// <summary> /// 移除全部缓存 /// </summary> public static void RemoveAllCache() { var cache = HttpRuntime.Cache; var cacheEnum = cache.GetEnumerator(); while (cacheEnum.MoveNext()) { cache.Remove(cacheEnum.Key.ToString()); } } }
然后是调用:
public IEnumerable<CompanyModel> FindCompanys() { var cache = CacheHelper.GetCache("commonData_Company");//先读取 if (cache == null)//如果没有该缓存 { var queryCompany = _base.CompanyModel();//从数据库取出 var enumerable = queryCompany.ToList(); CacheHelper.SetCache("commonData_Company", enumerable);//添加缓存 return enumerable; } var result = (List<CompanyModel>)cache;//有就直接返回该缓存 return result; }
测试结果:
首次加载进来是为null,然后读取数据库,添加进缓存,当前返回前台的是从数据库中取出的数据。
刷新页面,发现缓存中已经有了读出的30条数据,
然后接下来走,返回缓存中的数据:
加载全部内容