private void _timer_Elapsed(object sender, ElapsedEventArgs e)
{
foreach (KeyValuePair <string, IVolatileToken> token in timeCache)
{
if (!token.Value.IsCurrent)
{
IVolatileToken _token = new AbsoluteExpirationToken(this, TimeSpan.Zero);
MemcachedHelper.GetInstance().Remove(token.Key);
timeCache.TryRemove(token.Key, out _token);
}
}
}