c#实现分组服务器，单一无重复生成ID

class Program
    {
        static void Main(string[] args)
        {
            List<Thread> threads = new List<Thread>();
            getID();
            Console.WriteLine("重复次数：" + ccount);
            Console.ReadLine();
        }

        public static void getID()
        {
            for (int j = 0; j < 20; j++)
            {
                for (int i = 0; i < 99999; i++)
                {
                    // GetDate();
                    Console.WriteLine(GetDate());
                }
                Thread.Sleep(980);
            }
        }

        static int serverID = 99;
        static ulong ID = 1;
        static HashSet<string> longset = new HashSet<string>();
        static int ccount = 0;

        public static string GetDate()
        {
            lock (typeof(ulong))
            {
                if (ID + 1 > 99999)
                {
                    ID = 0;
                }
                ID++;
                string _ulong = serverID + "" + System.DateTime.Now.ToString("yyMMddHHmmss") + ("" + ID).PadLeft(5, '0');
                if (longset.Contains(_ulong))
                {
                    ccount++;
                }
                longset.Add(_ulong);
                return _ulong;
            }
        }
    }

该程序用于生成的ID太强规则可言的，可实现分布式生成ID，在合并数据是无重复ID~！目前支持99组服务器同时运行，每秒9999个ID生成~！