另类的缓存技术（存储数据）

 1 using System;
 2 using System.Web;
 3 using System.Web.Caching;
 4 
 5 namespace Mysoft.Cache
 6 {
 7     /// <summary>
 8     /// 缓存生成类
 9     /// </summary>
10     public class CacheControl
11     {
12         //const double CacheDuration = 60.0;
13 
14         private static double _CacheDuration = 1800.0;
15 
16         public static double CacheDuration
17         {
18             get
19             {
20                 return _CacheDuration;
21             }
22             set
23             {
24                 _CacheDuration = value;
25             }
26         }
27         
28         private static string GetCacheKey(string cacheKey, string[] MasterCacheKeyArray)
29         {
30             return string.Concat(MasterCacheKeyArray[0], "-", cacheKey);
31         }
32 
33         public static object GetCacheItem(string rawKey, string[] MasterCacheKeyArray)
34         {
35             return HttpRuntime.Cache[GetCacheKey(rawKey, MasterCacheKeyArray)];
36         }
37 
38         public static void AddCacheItem(string rawKey, object value, string[] MasterCacheKeyArray)
39         {
40             System.Web.Caching.Cache DataCache = HttpRuntime.Cache;
41 
42             // Make sure MasterCacheKeyArray[0] is in the cache - if not, add it
43             if (DataCache[MasterCacheKeyArray[0]] == null)
44             {
45                 DataCache[MasterCacheKeyArray[0]] = DateTime.Now;
46             }
47             CacheDependency dependency = new CacheDependency(null, MasterCacheKeyArray);
48             DataCache.Insert(GetCacheKey(rawKey, MasterCacheKeyArray), value, dependency, DateTime.Now.AddSeconds(CacheDuration), System.Web.Caching.Cache.NoSlidingExpiration);
49         }
50 
51         public static void InvalidateCache(string[] MasterCacheKeyArray)
52         {
53             // Remove the cache dependency
54             HttpRuntime.Cache.Remove(MasterCacheKeyArray[0]);
55         }
56     }
57 }