.Net 5 Actor 并发模型

是一个利器，用来实现 模型通讯，并发执行。

 /// <summary>
    /// 无锁并行编程模型（暂时用来处理串行任务，任务串行执行）
    /// </summary>
    public interface IActor
    {
        /// <summary>
        /// 增加消息
        /// </summary>
        /// <returns></returns>
        (bool success, int size) AddMsg(object message);
        /// <summary>
        /// 启动服务
        /// </summary>
        /// <returns></returns>
        Task Start();
        /// <summary>
        /// 停止服务运行，等待毫秒数
        /// </summary>
        /// <param name="WatingTimeout"></param>
        /// <returns></returns>
        bool Stop(int WatingTimeout);
    }
    public abstract class Actor : IDisposable, IActor
    {
        readonly ILog log = Logger.LogManager.GetLogger("DefaultLog");
        public Actor(string name)
        {
            Name = name;
            MailBox = new BlockingCollection<object>();
        }
        /// <summary>
        /// 名称
        /// </summary>
        public string Name { get; set; }
        /// <summary>
        /// 是否启用
        /// </summary>
        public bool Active { get; private set; }
        /// <summary>
        /// 是否长时间运行。长时间运行任务使用独立线程，默认true
        /// </summary>
        public bool LongRunning { get; set; } = true;
        /// <summary>
        /// 处理的消息邮箱
        /// </summary>
        public BlockingCollection<object> MailBox { get; set; }
        /// <summary>
        /// 内置任务
        /// </summary>
        private Task _task;

        public virtual Task Start()
        {
            if (Active) return _task;
            Active = true;
            // 启动异步
            if (_task == null)
            {
                lock (this)
                {
                    if (_task == null)
                    {
                        _task = Task.Factory.StartNew(DoActorWork, LongRunning ? TaskCreationOptions.LongRunning : TaskCreationOptions.None);
                    }
                }
            }
            return _task;
        }

        public virtual bool Stop(int WatingTimeout)
        {
            MailBox?.CompleteAdding();
            Active = false;
            if (WatingTimeout == 0 || _task == null) return true;

            return _task.Wait(WatingTimeout);
        }
        public virtual (bool success, int size) AddMsg(object message)
        {
            // 自动开始
            if (!Active) Start();

            if (!Active)
            {
                return (false, MailBox.Count);
            }
            MailBox.Add(message);

            return (true, MailBox.Count);
        }
        /// <summary>
        /// 循环消费消息
        /// </summary>
        private void DoActorWork()
        {
            while (!MailBox.IsCompleted)
            {
                try
                {
                    var ctx = MailBox.Take();
                    var task = ProcessAsync(ctx);
                    if (task != null)
                    {
                        task.Wait();
                    }
                }
                catch (InvalidOperationException) { }
                catch (Exception ex)
                {
                    log.Error(ex.Message, ex);
                }
            }

            Active = false;
        }
        /// <summary>
        /// 处理消息
        /// </summary>
        /// <returns></returns>
        public abstract Task ProcessAsync(object msg);
        public void Dispose()
        {
            while (MailBox?.TryTake(out _) == true) { }
            MailBox = null;
        }
    }

/// <summary>
    /// 数据库处理
    /// </summary>
    public class ComputerActor : Actor
    {
        /// <summary>
        /// 串行处理
        /// </summary>
        /// <param name="TableName">表名</param>
        public ComputerActor(string TableName) : base(TableName)
        {
        }
        /// 如果已经有数据，那就不增加数据处理了
        /// </summary>
        /// <returns></returns>
        public override (bool success, int size) AddMsg(object message)
        {
            if (MailBox.Count > 0)
            {
                return (false, MailBox.Count);
            }
            return base.AddMsg(message);
        }
        /// <summary>
        /// <summary>
        /// 处理信息
        /// </summary>
        /// <returns></returns>
        public override Task ProcessAsync(object msg)
        {
            try
            {
				// todo
            }
            catch (Exception e)
            {
            }
            return Task.CompletedTask;
        }
    }

大致是这样的，具体的案例，可以自己写一个