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1 public static class CustomCache 2 { 3 private static List<ConcurrentDictionary<string, DataModel>> cacheContainer = null;//缓存容器 4 5 private static readonly int cpuCount = Environment.ProcessorCount;//获取CPU个数 6 7 private static readonly int intervalTime = 900;//间隔时间 秒 8 9 private static readonly int expirationTime = 15;//过期时间 分 10 11 12 /// <summary> 13 /// 构造初始化 14 /// </summary> 15 static CustomCache() 16 { 17 cacheContainer = new List<ConcurrentDictionary<string, DataModel>>(); 18 for (int i = 0; i < cpuCount; i++) 19 { 20 cacheContainer.Add(new ConcurrentDictionary<string, DataModel>()); 21 } 22 AutoClaerCache(); 23 } 24 25 /// <summary> 26 /// 自动清理缓存 27 /// </summary> 28 private static void AutoClaerCache() 29 { 30 Task.Factory.StartNew(() => 31 { 32 while (true) 33 { 34 Thread.Sleep(intervalTime); 35 for (int i = 0; i < cacheContainer.Count; i++) 36 { 37 var cache = cacheContainer[i].Where(w => w.Value.LifeCycleType == LifeCycle.Temp); 38 foreach (var item in cache) 39 { 40 if (DateTime.Now > item.Value.CacheDateTime) 41 { 42 cacheContainer[i].TryRemove(item.Key, out DataModel dataModel); 43 } 44 } 45 } 46 } 47 }); 48 } 49 50 /// <summary> 51 /// 添加或更新缓存 52 /// </summary> 53 /// <param name="key">键</param> 54 /// <param name="keyValue">键值</param> 55 /// <param name="lifeCycle">生命周期</param> 56 /// <returns></returns> 57 public static DataModel AddOrUpdate(string key, object keyValue, LifeCycle lifeCycle) 58 { 59 var model = new DataModel { LifeCycleType = lifeCycle, CacheData = keyValue, CacheDateTime = lifeCycle == LifeCycle.Lasting ? DateTime.Now : DateTime.Now.AddMinutes(expirationTime) }; 60 return cacheContainer[Math.Abs(key.GetHashCode() % cpuCount)].AddOrUpdate(key, model, (k, v) => { return model; }); 61 } 62 63 /// <summary> 64 /// 删除缓存 65 /// </summary> 66 /// <param name="key">键</param> 67 /// <returns></returns> 68 public static bool Remove(string key) 69 { 70 return cacheContainer[Math.Abs(key.GetHashCode() % cpuCount)].TryRemove(key, out DataModel dataModel); 71 } 72 73 /// <summary> 74 /// 获取缓存数据 75 /// </summary> 76 /// <typeparam name="T"></typeparam> 77 /// <param name="key">键</param> 78 /// <returns></returns> 79 public static T GetCacheData<T>(string key) 80 { 81 if (IsExistsCacheData(key, out int i)) 82 { 83 var temp = cacheContainer[i][key]; 84 if (temp.CacheData == null)//如果缓存为Null值返回类型默认值 85 { 86 return default(T); 87 } 88 if (typeof(T) != temp.CacheData.GetType())//判断类型是否一致，不一致将抛出异常 89 { 90 throw new Exception("This key value specifies that the type does not match the container cache type."); 91 } 92 return (T)temp.CacheData; 93 } 94 return default(T);//键值不存在也将返回类型默认值 95 } 96 97 /// <summary> 98 /// 获取缓存数据 99 /// </summary> 100 /// <typeparam name="T"></typeparam> 101 /// <param name="key">键值</param> 102 /// <param name="func">委托</param> 103 /// <param name="lifeCycle">生命周期</param> 104 /// <returns></returns> 105 public static T GetCacheData<T>(string key, Func<T> func, LifeCycle lifeCycle) 106 { 107 if (IsExistsCacheData(key, out int i)) 108 { 109 var temp = cacheContainer[i][key]; 110 if (temp.CacheData == null)//如果缓存为Null值返回类型默认值 111 { 112 return default(T); 113 } 114 if (typeof(T) != temp.CacheData.GetType())//判断类型是否一致，不一致将抛出异常 115 { 116 throw new Exception("This key value specifies that the type does not match the container cache type."); 117 } 118 return (T)temp.CacheData; 119 } 120 T data = default(T); 121 try 122 { 123 data = func.Invoke(); 124 } 125 catch 126 { 127 throw new Exception("Func Invoke Exception."); ; 128 } 129 AddOrUpdate(key, data, lifeCycle); 130 return data; 131 } 132 133 /// <summary> 134 /// 是否存在缓存数据 135 /// </summary> 136 /// <param name="key">键</param> 137 /// <param name="containerIndex">容器索引</param> 138 /// <returns>返回 Bool</returns> 139 public static bool IsExistsCacheData(string key, out int containerIndex) 140 { 141 containerIndex = Math.Abs(key.GetHashCode() % cpuCount); 142 if (cacheContainer[containerIndex].ContainsKey(key)) 143 { 144 var cache = cacheContainer[containerIndex][key]; 145 if (cache.LifeCycleType == LifeCycle.Temp && DateTime.Now > cache.CacheDateTime) 146 { 147 cacheContainer[containerIndex].TryRemove(key, out DataModel dataModel); 148 return false; 149 } 150 return true; 151 } 152 return false; 153 } 154 }
1 public class DataModel 2 { 3 /// <summary> 4 /// 生命周期类型 5 /// </summary> 6 public LifeCycle LifeCycleType { get; set; } 7 8 /// <summary> 9 /// 缓存时间 10 /// </summary> 11 public DateTime CacheDateTime { get; set; } 12 13 /// <summary> 14 /// 缓存数据 15 /// </summary> 16 public object CacheData { get; set; } 17 }
1 public enum LifeCycle 2 { 3 Lasting = 0,//持久 4 Temp = 1//临时 5 }
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