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  • c#缓存

     /// <summary>
            /// 建立缓存
            /// </summary>
            public static object TryAddCache(string key, object value, CacheItemPriority priority)
            {
                if (HttpRuntime.Cache[key] == null && value != null)
                    return HttpRuntime.Cache.Add(key, value, null, Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration, priority, null);
                else
                    return null;
            }
     
            /// <summary>
            /// 建立定时不访问便移除的缓存
            /// </summary>
            public static object TryAddCache(string key, object value, TimeSpan slidingExpiration, CacheItemPriority priority)
            {
                if (HttpRuntime.Cache[key] == null && value != null)
                    return HttpRuntime.Cache.Add(key, value, null, Cache.NoAbsoluteExpiration, slidingExpiration, priority, null);
                else
                    return null;
            }
     
            /// <summary>
            /// 建立缓存,并在移除时执行事件
            /// </summary>
            public static object TryAddCache(string key, object value, DateTime absoluteExpiration, TimeSpan slidingExpiration, CacheItemPriority priority, CacheItemRemovedCallback onRemovedCallback)
            {
                if (HttpRuntime.Cache[key] == null && value != null)
                    return HttpRuntime.Cache.Add(key, value, null, absoluteExpiration, slidingExpiration, priority, onRemovedCallback);
                else
                    return null;
            }
     
     
            /// <summary>
            /// 移除缓存
            /// </summary>
            public static object TryRemoveCache(string key)
            {
                if (HttpRuntime.Cache[key] != null)
                    return HttpRuntime.Cache.Remove(key);
                else
                    return null;
            }
     
            /// <summary>
            /// 移除键中带某关键字的缓存
            /// </summary>
            public static void RemoveMultiCache(string keyInclude)
            {
                IDictionaryEnumerator CacheEnum = HttpRuntime.Cache.GetEnumerator();
                while (CacheEnum.MoveNext())
                {
                    if (CacheEnum.Key.ToString().IndexOf(keyInclude.ToString()) >= 0)
                        HttpRuntime.Cache.Remove(CacheEnum.Key.ToString());
                }
            }
     
            /// <summary>
            /// 移除所有缓存
            /// </summary>
            public static void RemoveAllCache()
            {
                IDictionaryEnumerator CacheEnum = HttpRuntime.Cache.GetEnumerator();
                while (CacheEnum.MoveNext())
                {
                    HttpRuntime.Cache.Remove(CacheEnum.Key.ToString());
                }
            }
    using System;
    using System.Collections.Generic;
    using System.Text;
    using System.Collections;
    using System.Web;
    using System.Web.Caching;
     
    namespace BLL
    {
        public class Caches
        {
            /// <summary>
            /// 建立缓存
            /// </summary>
            public static object TryAddCache(string key, object value, CacheItemPriority priority)
            {
                if (HttpRuntime.Cache[key] == null && value != null)
                    return HttpRuntime.Cache.Add(key, value, null, Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration, priority, null);
                else
                    return null;
            }
     
            /// <summary>
            /// 建立定时不访问便移除的缓存
            /// </summary>
            public static object TryAddCache(string key, object value, TimeSpan slidingExpiration, CacheItemPriority priority)
            {
                if (HttpRuntime.Cache[key] == null && value != null)
                    return HttpRuntime.Cache.Add(key, value, null, Cache.NoAbsoluteExpiration, slidingExpiration, priority, null);
                else
                    return null;
            }
     
            /// <summary>
            /// 建立缓存,并在移除时执行事件
            /// </summary>
            public static object TryAddCache(string key, object value, DateTime absoluteExpiration, TimeSpan slidingExpiration, CacheItemPriority priority, CacheItemRemovedCallback onRemovedCallback)
            {
                if (HttpRuntime.Cache[key] == null && value != null)
                    return HttpRuntime.Cache.Add(key, value, null, absoluteExpiration, slidingExpiration, priority, onRemovedCallback);
                else
                    return null;
            }
     
     
            /// <summary>
            /// 移除缓存
            /// </summary>
            public static object TryRemoveCache(string key)
            {
                if (HttpRuntime.Cache[key] != null)
                    return HttpRuntime.Cache.Remove(key);
                else
                    return null;
            }
     
            /// <summary>
            /// 移除键中带某关键字的缓存
            /// </summary>
            public static void RemoveMultiCache(string keyInclude)
            {
                IDictionaryEnumerator CacheEnum = HttpRuntime.Cache.GetEnumerator();
                while (CacheEnum.MoveNext())
                {
                    if (CacheEnum.Key.ToString().IndexOf(keyInclude.ToString()) >= 0)
                        HttpRuntime.Cache.Remove(CacheEnum.Key.ToString());
                }
            }
     
            /// <summary>
            /// 移除所有缓存
            /// </summary>
            public static void RemoveAllCache()
            {
                IDictionaryEnumerator CacheEnum = HttpRuntime.Cache.GetEnumerator();
                while (CacheEnum.MoveNext())
                {
                    HttpRuntime.Cache.Remove(CacheEnum.Key.ToString());
                }
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/shaoke123/p/5209276.html
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