2.应用数据缓存-Cache

Posted 2022-12-16 jsll

2.应用数据缓存-Cache

1.引入CacheHelper.cs
CacheHelper.cs文件源码在下面;
2.介绍用法:

//键
string ips = "键";
//值;得到当前时间
long Now_time = DateTime.Now.ToFileTime();
//存;设置过期缓存时间2s;键值对形式存入;Insert方法存入
CacheHelper.SetCache(ips, Now_time,TimeSpan.FromSeconds(2));    
//取;通过键取值,取出来的是object类型,我这里进行了强转Convert.ToInt64;
long Get_time = Convert.ToInt64(CacheHelper.GetCache(ips));
//清除全部缓存
CacheHelper.RemoveAllCache();

Ps:CacheHelper.cs文件源码

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

namespace JJQ_Model

    /// <summary>
    /// Cache缓存帮助类
    /// </summary>
    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
        /// 向 Cache 对象插入项，该项带有一个缓存键引用其位置，并使用 CacheItemPriority 枚举提供的默认值。
        /// </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());