好用的Cache辅助工具类

话不多说，直接上代码
  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Collections;
  6 using System.Web;
  7 using System.Web.Caching;
  8 
  9 namespace Tools
 10 {
 11     /// <summary>
 12     /// 缓存辅助类
 13     /// </summary>
 14     public static class CacheHelper
 15     {
 16         #region // 绝对缓存过期时间
 17         public static DateTime Absolute_Minute_1
 18         {
 19             get { return DateTime.Now.AddMinutes(1); }
 20         }
 21 
 22         public static DateTime Absolute_Minute_10
 23         {
 24             get { return DateTime.Now.AddMinutes(10); }
 25         }
 26 
 27         public static DateTime Absolute_Minute_30
 28         {
 29             get { return DateTime.Now.AddMinutes(30); }
 30         }
 31 
 32         public static DateTime Absolute_Hour_1
 33         {
 34             get { return DateTime.Now.AddHours(1); }
 35         }
 36 
 37         public static DateTime Absolute_Hour_2
 38         {
 39             get { return DateTime.Now.AddHours(2); }
 40         }
 41 
 42         public static DateTime Absolute_Hour_5
 43         {
 44             get { return DateTime.Now.AddHours(5); }
 45         }
 46 
 47         public static DateTime Absolute_Hour_12
 48         {
 49             get { return DateTime.Now.AddHours(12); }
 50         }
 51 
 52         public static DateTime Absolute_Day_1
 53         {
 54             get { return DateTime.Now.AddDays(1); }
 55         }
 56 
 57         public static DateTime Absolute_Day_7
 58         {
 59             get { return DateTime.Now.AddDays(7); }
 60         }
 61 
 62         public static DateTime Absolute_Day_14
 63         {
 64             get { return DateTime.Now.AddDays(14); }
 65         }
 66 
 67         public static DateTime Absolute_Day_15
 68         {
 69             get { return DateTime.Now.AddDays(15); }
 70         }
 71 
 72         public static DateTime Absolute_Month_1
 73         {
 74             get { return DateTime.Now.AddMonths(1); }
 75         }
 76         #endregion
 77 
 78         #region // 滑动缓存过期时间
 79         public static TimeSpan Sliding_Minute_1
 80         {
 81             get { return new TimeSpan(TimeSpan.TicksPerMinute); }
 82         }
 83 
 84         public static TimeSpan Sliding_Minute_10
 85         {
 86             get { return new TimeSpan(TimeSpan.TicksPerMinute * 10); }
 87         }
 88 
 89         public static TimeSpan Sliding_Minute_30
 90         {
 91             get { return new TimeSpan(TimeSpan.TicksPerMinute * 30); }
 92         }
 93 
 94         public static TimeSpan Sliding_Hour_1
 95         {
 96             get { return new TimeSpan(TimeSpan.TicksPerHour); }
 97         }
 98 
 99         public static TimeSpan Sliding_Hour_2
100         {
101             get { return new TimeSpan(TimeSpan.TicksPerHour * 2); }
102         }
103 
104         public static TimeSpan Sliding_Hour_5
105         {
106             get { return new TimeSpan(TimeSpan.TicksPerHour * 5); }
107         }
108 
109         public static TimeSpan Sliding_Hour_12
110         {
111             get { return new TimeSpan(TimeSpan.TicksPerHour * 12); }
112         }
113 
114         public static TimeSpan Sliding_Day_1
115         {
116             get { return new TimeSpan(TimeSpan.TicksPerDay); }
117         } 
118         #endregion
119 
120         /// <summary>
121         /// 缓存
122         /// </summary>
123         private static Cache cache = HttpRuntime.Cache;
124 
125         /// <summary>
126         /// 根据键获取缓存数据
127         /// </summary>
128         /// <param name="cacheKey">缓存的键</param>
129         /// <returns></returns>
130         private static object GetCache(string cacheKey)
131         {
132             return cache.Get(cacheKey);
133         }
134 
135         /// <summary>
136         ///  设置缓存
137         /// </summary>
138         /// <param name="cacheKey">缓存的键</param>
139         /// <param name="objValue">缓存的值</param>
140         private static void SetCache(string cacheKey, object objValue)
141         {
142             cache.Insert(cacheKey, objValue);
143         }
144 
145         /// <summary>
146         /// 设置缓存
147         /// </summary>
148         /// <param name="cacheKey">缓存的键</param>
149         /// <param name="objValue">缓存的值</param>
150         /// <param name="slidingExpiration">滑动过期时间</param>
151         private static void SetCache(string cacheKey, object objValue, TimeSpan slidingExpiration)
152         {
153             cache.Insert(cacheKey, objValue, null, Cache.NoAbsoluteExpiration, slidingExpiration);
154         }
155 
156         /// <summary>
157         /// 设置缓存
158         /// </summary>
159         /// <param name="cacheKey">缓存的键</param>
160         /// <param name="objValue">缓存的值</param>
161         /// <param name="absoluteExpiration">绝对过期时间</param>
162         private static void SetCache(string cacheKey, object objValue, DateTime absoluteExpiration)
163         {
164             cache.Insert(cacheKey, objValue, null, absoluteExpiration, Cache.NoSlidingExpiration);
165         }
166 
167         /// <summary>
168         /// 设置缓存
169         /// </summary>
170         /// <param name="cacheKey">缓存的键</param>
171         /// <param name="objValue">缓存的值</param>
172         /// <param name="dependency">文件依赖</param>
173         private static void SetCache(string cacheKey, object objValue, CacheDependency dependency)
174         {
175             cache.Insert(cacheKey, objValue, dependency, Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration);
176         }
177 
178         /// <summary>
179         /// 移除指定的缓存
180         /// </summary>
181         /// <param name="cacheKey">缓存的键</param>
182         public static void Remove(string cacheKey)
183         {
184             cache.Remove(cacheKey);
185         }
186 
187         /// <summary>
188         /// 移除全部缓存
189         /// </summary>
190         public static void Remove()
191         {
192             IDictionaryEnumerator CacheEnum = cache.GetEnumerator();
193             while (CacheEnum.MoveNext())
194             {
195                 Remove(CacheEnum.Key.ToString());
196             }
197         }
198 
199         /// <summary>
200         /// 删除以cacheKeyPrefix为前缀的缓存Key的缓存
201         /// </summary>
202         /// <param name="cacheKeyPrefix">缓存键前缀</param>
203         public static void RemoveByKeyStartsWith(string cacheKeyPrefix)
204         {
205             IDictionaryEnumerator CacheEnum = cache.GetEnumerator();
206             while (CacheEnum.MoveNext())
207             {
208                 var key = CacheEnum.Key.ToString();
209                 if (key != null && key.StartsWith(cacheKeyPrefix))
210                 {
211                     Remove(key);
212                 }
213             }
214         }
215 
216         /// <summary>
217         /// 从缓存中获取数据。缓存中不存在的时候，从回调方法getDate中获取，并设置进缓存。
218         /// </summary>
219         /// <typeparam name="T">缓存的数据类型</typeparam>
220         /// <param name="cacheKey">缓存的键</param>
221         /// <param name="getData">回调方法</param>
222         /// <returns>缓存中的数据</returns>
223         public static T Get<T>(string cacheKey, Func<T> getData)
224         {
225             var data = GetCache(cacheKey);
226             if (data == null)
227             {
228                 data = getData();
229                 SetCache(cacheKey, data);
230             }
231             return (T)data;
232         }
233 
234         /// <summary>
235         /// 从缓存中获取数据。缓存中不存在的时候，从回调方法getDate中获取，并设置进缓存。
236         /// </summary>
237         /// <typeparam name="T">缓存的数据类型</typeparam>
238         /// <param name="cacheKey">缓存的键</param>
239         /// <param name="slidingExpiration">滑动过期时间</param>
240         /// <param name="getData">回调方法</param>
241         /// <returns>缓存中的数据</returns>
242         public static T Get<T>(string cacheKey, TimeSpan slidingExpiration, Func<T> getData)
243         {
244             var data = GetCache(cacheKey);
245             if (data == null)
246             {
247                 data = getData();
248                 SetCache(cacheKey, data, slidingExpiration);
249             }
250             return (T)data;
251         }
252 
253         /// <summary>
254         /// 从缓存中获取数据。缓存中不存在的时候，从回调方法getDate中获取，并设置进缓存。
255         /// </summary>
256         /// <typeparam name="T">缓存的数据类型</typeparam>
257         /// <param name="cacheKey">缓存的键</param>
258         /// <param name="absoluteExpiration">绝对过期时间</param>
259         /// <param name="getData">回调方法</param>
260         /// <returns>缓存中的数据</returns>
261         public static T Get<T>(string cacheKey, DateTime absoluteExpiration, Func<T> getData)
262         {
263             var data = GetCache(cacheKey);
264             if (data == null)
265             {
266                 data = getData();
267                 SetCache(cacheKey, data, absoluteExpiration);
268             }
269             return (T)data;
270         }
271 
272         /// <summary>
273         /// 从缓存中获取数据。缓存中不存在的时候，从回调方法getDate中获取，并设置进缓存。
274         /// </summary>
275         /// <typeparam name="T">缓存的数据类型</typeparam>
276         /// <param name="cacheKey">缓存的键</param>
277         /// <param name="dependency">文件依赖</param>
278         /// <param name="getData">回调方法</param>
279         /// <returns>缓存中的数据</returns>
280         public static T Get<T>(string cacheKey, CacheDependency dependency, Func<T> getData)
281         {
282             var data = GetCache(cacheKey);
283             if (data == null)
284             {
285                 data = getData();
286                 SetCache(cacheKey, data, dependency);
287             }
288             return (T)data;
289         }
290 
291         /// <summary>
292         /// 从缓存中获取数据。缓存中不存在的时候，从回调方法getDate中获取，并设置进缓存。
293         /// </summary>
294         /// <typeparam name="T">缓存的数据类型</typeparam>
295         /// <param name="cacheKey">缓存的键</param>
296         /// <param name="filename">依赖的文件路径</param>
297         /// <param name="getData">回调方法</param>
298         /// <returns>缓存中的数据</returns>
299         public static T Get<T>(string cacheKey, string filename, Func<T> getData)
300         {
301             return Get<T>(cacheKey, new CacheDependency(filename), getData);
302         }
303 
304         /// <summary>
305         /// 从缓存中获取数据。缓存中不存在的时候，从回调方法getDate中获取，并设置进缓存。
306         /// </summary>
307         /// <typeparam name="T">缓存的数据类型</typeparam>
308         /// <param name="cacheKey">缓存的键</param>
309         /// <param name="filenames">依赖的文件路径</param>
310         /// <param name="getData">回调方法</param>
311         /// <returns>缓存中的数据</returns>
312         public static T Get<T>(string cacheKey, string[] filenames, Func<T> getData)
313         {
314             return Get<T>(cacheKey, new CacheDependency(filenames), getData);
315         }
316     }
317 }
posted @ 2016-06-16 10:31 唐亦凡阅读(1042) 评论(0) 编辑收藏举报
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好用的Cache辅助工具类

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