/// <summary>
///
/// </summary>
/// <param name="key"></param>
/// <param name="waitTime"></param>
/// <returns></returns>
public static async Task <T> GetOrWaitCache <T>(object key, int waitTime = 30)
{
if (AppCache.ContainsKey(key))
{
object objCache = AppCache.GetCache <T>(key);
if (objCache != null)
{
return((T)objCache);
}
else
{
DateTime dtNow = DateTime.Now;
while ((DateTime.Now - dtNow).TotalSeconds < waitTime)
{
await Task.Delay(50);
objCache = AppCache.GetCache <T>(key);
if (objCache != null)
{
return((T)objCache);
}
}
return(default(T));
}
}
else
{
AppCache.Add(key, null);
return(default(T));
}
}
public static T GetCache <T>(object key)
{
var nkey = key.Equals(Thread.CurrentThread.ManagedThreadId) ? key : $"{key}_{DAO.DBNo}";
dicCache.TryGetValue(nkey, out CacheObject obj);
if (obj == null)
{
return(default(T));
}
if ((DateTime.Now - obj.CacheStartTime).TotalMinutes > obj.ExpireTime)
{
AppCache.Remove(nkey);
return(default(T));
}
return((T)obj.Value);
}
private static void CacheExpireMoni()
{
try
{
var v = dicCache.Values.OrderBy((itm) => { return(itm.ExpireTime); }).Take(20);
DateTime dtNow = DateTime.Now;
foreach (var c in v)
{
if ((dtNow - c.CacheStartTime).TotalMinutes > c.ExpireTime)
{
AppCache.Remove(c.Key);
}
}
}
catch { }
}
public static bool ContainsKey(object key)
{
var nkey = key.Equals(Thread.CurrentThread.ManagedThreadId) ? key : $"{key}_{DAO.DBNo}";
if (dicCache.ContainsKey(nkey))
{
CacheObject cobj;
if (dicCache.TryGetValue(nkey, out cobj))
{
if ((DateTime.Now - cobj.CacheStartTime).TotalMinutes > cobj.ExpireTime)
{
AppCache.Remove(nkey);
return(false);
}
}
}
return(dicCache.ContainsKey(nkey));
}
