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林上的MemoryCache在這裏工作是我的幾個代碼的C#的MemoryCache擅自改變數據
緩存類
private static string policy = "__";
public static void SaveTocache(string cacheKey, object savedItem,int hour = 43800)
{
if (!cacheKey.StartsWith(policy)) cacheKey = policy + cacheKey;
CacheItemPolicy cacheItemPolicy = new CacheItemPolicy();
cacheItemPolicy.AbsoluteExpiration = new DateTimeOffset(DateTime.Now.AddHours(hour));
RemoveFromCache(cacheKey);
MemoryCache.Default.Add(cacheKey, savedItem, cacheItemPolicy);
}
public static T GetFromCache<T>(string cacheKey) where T : class
{
if (!cacheKey.StartsWith(policy)) cacheKey = policy + cacheKey;
return MemoryCache.Default[cacheKey] as T;
}
public static void RemoveFromCache(string cacheKey)
{
if(!cacheKey.StartsWith(policy))cacheKey = policy + cacheKey;
foreach (string key in MemoryCache.Default.Where(obj=> obj.Key.StartsWith(cacheKey)).Select(obj=> obj.Key))
{
MemoryCache.Default.Remove(key);
}
}
public static bool IsInCache(string cacheKey)
{
if (!cacheKey.StartsWith(policy)) cacheKey = policy + cacheKey;
return MemoryCache.Default[cacheKey] != null;
}
所以我有一個叫做日誌當我添加一個新的日誌類那裏有一個bug,繼承人代碼
Models.Log l = new Models.Log();
l.LogId = Guid.NewGuid();
l.Topic = topic;
l.PIC = pic;
l.LogStatusId = logStatus;
l.LogRarityId = logRarity;
l.LogTypeId = logType;
l.SavedUser = savedUser;
l.RequestedUser = requestedUser;
l.Division = division;
l.InsertedDate = DateTime.Now;
l.Description = description;
List<Models.Log> list = getData();
Utility.Connect.Agla15Context.Logs.Add(l);
Utility.Connect.Agla15Context.SaveChanges();
string caches = cacheName;
list.Add(l);
Utility.CacheHelper.SaveTocache(caches, list);
該錯誤是例如myprevious對象(緩存的值): 3對象A,B,C 我的下一個對象(緩存值)例如: 4對象A,B,C,d
所以我想通過調用RemoveFromCache和添加對象(緩存值)A,取出對象A,B,C,B,C,d
當我走帶緩存通過調用GetFromCache有時我得到對象(緩存值)A,B,C,有時我得到對象(緩存值)A,B,C,D什麼發生在我的代碼。
或精簡一看這樣
List<String> a = new List<String>(){"A","B","C"};
Utility.CacheHelper.SaveTocache("MyKey",a);
List<String> b = Utility.CacheHelper.GetFromCache<List<String>>("MyKey");//A,B,C
b.add("D");
Utility.CacheHelper.SaveTocache("MyKey",b);
for(int i=0;i<100;i++)
{
List<String> b = Utility.CacheHelper.GetFromCache<List<String>>("MyKey");//Sometimes A,B,C sometimes A,B,C,D
}
「A,B,C」和「A,B,C,D」是什麼意思? – mjwills
所有這些'policy + cacheKey;'語句都不會增加問題,但會分散注意力。 –
不完整且不能令人信服。創建一個[mcve]。 –