diff --git a/Docs/Jupyter笔记.2.5.原子操作.ipynb b/Docs/Jupyter笔记.2.5.原子操作.ipynb
index 160fe8c..de080da 100644
--- a/Docs/Jupyter笔记.2.5.原子操作.ipynb
+++ b/Docs/Jupyter笔记.2.5.原子操作.ipynb
@@ -120,7 +120,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Increment\n",
+    "### 原子递增 Interlocked.Increment()\n",
     "Interlocked.Increment 函数执行的原子操作属于 “获取-添加”分类,执行后变量的值增加1,返回的值是增加后的值,即增加前的值加1"
    ]
   },
@@ -178,6 +178,430 @@
     "\n",
     "//原子操作,多线程下多次执行结果相同"
    ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## 原子递减 Interlocked.Decrement()"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "属于 `获取-添加`分类,执行后变量的值减少1,返回值是减少后的值即原值减1"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "dotnet_interactive": {
+     "language": "csharp"
+    },
+    "polyglot_notebook": {
+     "kernelName": "csharp"
+    },
+    "vscode": {
+     "languageId": "polyglot-notebook"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "#region 原子递减\n",
+    "//原子递减\n",
+    "public class Counter4Decrement\n",
+    "{\n",
+    "    //总次数\n",
+    "    public static int TotalNumber = 0;\n",
+    "    \n",
+    "    //方法循环次数\n",
+    "    public static readonly int LoopNumber = 10000;\n",
+    "\n",
+    "    //执行\n",
+    "    public static void Decrement()\n",
+    "    {\n",
+    "        for (int i = 1; i <= LoopNumber; i++)\n",
+    "        {\n",
+    "            //原子操作:循环递减,返回递减后的值\n",
+    "            var decreValue = System.Threading.Interlocked.Decrement(ref TotalNumber);\n",
+    "        }\n",
+    "        Console.WriteLine($\"线程[{Thread.CurrentThread.Name}] 执行了递减 {LoopNumber} 次,结束时 TotalNumber = {TotalNumber}\");\n",
+    "    }\n",
+    "}\n",
+    "\n",
+    "//使用域隔离和代码折叠\n",
+    "{\n",
+    "    var threads =  new List<Thread>()\n",
+    "    {\n",
+    "        new Thread(Counter4Decrement.Decrement){Name=\"thread_a\"},\n",
+    "        new Thread(Counter4Decrement.Decrement){Name=\"thread_b\"}\n",
+    "    };\n",
+    "\n",
+    "    threads.ForEach(t => t.Start());\n",
+    "    threads.ForEach(t => t.Join());\n",
+    "\n",
+    "    //主线程信息\n",
+    "    Console.WriteLine($\"主(执行)线程[{Thread.CurrentThread.Name}] 结束时,TotalLoopNumber = {Counter4Decrement.TotalNumber}\");\n",
+    "}\n",
+    "\n",
+    "//原子操作:\n",
+    "//1、多线程下,每线程执行结束后共享变量可能不同\n",
+    "//2、所有线程结束, 主线程获取的变量值与最后完成的线程值相同\n",
+    "#endregion"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## 原子增加指定数量(负数为减) Interlocked.Add()"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Interlocked.Add 属于 `获取-添加`分类,执行后变量的值加等于第二个参数的值,返回值是增加后的值即原值加第二个参数值"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "dotnet_interactive": {
+     "language": "csharp"
+    },
+    "polyglot_notebook": {
+     "kernelName": "csharp"
+    },
+    "vscode": {
+     "languageId": "polyglot-notebook"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "//原子增加指定数量\n",
+    "public class Counter4Add\n",
+    "{\n",
+    "    //共享变量\n",
+    "    public static int ShareNumber = 0;\n",
+    "\n",
+    "    //执行\n",
+    "    public static void Add()\n",
+    "    {\n",
+    "        //随机休眠,打乱多线程执行顺序\n",
+    "        Thread.Sleep(Random.Shared.Next(100,500));\n",
+    "\n",
+    "        //原子操作:增加指定数量\n",
+    "        var decreValue = System.Threading.Interlocked.Add(ref ShareNumber,2);\n",
+    "        Console.WriteLine($\"线程[{Thread.CurrentThread.Name}] 递减2后, ShareNumber = {ShareNumber}\");\n",
+    "    }\n",
+    "}\n",
+    "\n",
+    "//使用域隔离和代码折叠\n",
+    "{\n",
+    "    var threads =  new List<Thread>()\n",
+    "    {\n",
+    "        new Thread(Counter4Add.Add){Name=\"thread_a\"},\n",
+    "        new Thread(Counter4Add.Add){Name=\"thread_b\"}\n",
+    "    };\n",
+    "\n",
+    "    threads.ForEach(t => t.Start());\n",
+    "    threads.ForEach(t => t.Join());\n",
+    "\n",
+    "    //主线程信息\n",
+    "    Console.WriteLine($\"主[执行]线程获共享变量 ShareNumber 最终的值 = {Counter4Add.ShareNumber}\");\n",
+    "}\n",
+    "\n",
+    "//原子操作:\n",
+    "//1、两个线程同时执行会输出: 2 4 或 4 2\n",
+    "//2、全局变量最终的值为 4"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## 原子替换 Interlocked.Exchange()"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Interlocked.Exchange() 属于 `测试-设置` 分类, 将变量的值修改为第二个参数的值,返回修改前的值"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "dotnet_interactive": {
+     "language": "csharp"
+    },
+    "polyglot_notebook": {
+     "kernelName": "csharp"
+    },
+    "vscode": {
+     "languageId": "polyglot-notebook"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "//原子替换\n",
+    "public class Counter4Exchange\n",
+    "{\n",
+    "    //共享变量\n",
+    "    public static int ShareNumber = 0;\n",
+    "\n",
+    "    //执行\n",
+    "    public static void Exchange()\n",
+    "    {\n",
+    "        //随机休眠,打乱多线程执行顺序\n",
+    "        Thread.Sleep(Random.Shared.Next(100,500));\n",
+    "\n",
+    "        //原子操作:替换\n",
+    "        var oldValue = System.Threading.Interlocked.Exchange(ref ShareNumber,1);\n",
+    "        Console.WriteLine($\"线程[{Thread.CurrentThread.Name}] 替换前的值为 {oldValue}\");\n",
+    "    }\n",
+    "}\n",
+    "\n",
+    "//使用域隔离和代码折叠\n",
+    "{\n",
+    "    var threads =  new List<Thread>()\n",
+    "    {\n",
+    "        new Thread(Counter4Exchange.Exchange){Name=\"thread_a\"},\n",
+    "        new Thread(Counter4Exchange.Exchange){Name=\"thread_b\"}\n",
+    "    };\n",
+    "\n",
+    "    threads.ForEach(t => t.Start());\n",
+    "    threads.ForEach(t => t.Join());\n",
+    "\n",
+    "    //主线程信息\n",
+    "    Console.WriteLine($\"主[执行]线程获共享变量 ShareNumber 最终的值 = {Counter4Exchange.ShareNumber}\");\n",
+    "}\n",
+    "\n",
+    "//原子替换:\n",
+    "//1、两个线程同时执行会输出: 0 1 或 1 0\n",
+    "//2、全局变量最终的值为 1"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## 原子比较替换 Interlocked.CompareExchange()"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Interlocked.CompareExchange() 属于 `比较-交换` 分类, 执行时如果变量的值等于第三个变量的值,则修改为第二个变量的值并返回修改前的值;否则直接返回现有值"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "dotnet_interactive": {
+     "language": "csharp"
+    },
+    "polyglot_notebook": {
+     "kernelName": "csharp"
+    },
+    "vscode": {
+     "languageId": "polyglot-notebook"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "//原子比较替换\n",
+    "public class Counter4CompareExchange\n",
+    "{\n",
+    "    //共享变量\n",
+    "    public static int ShareNumber = 0;\n",
+    "\n",
+    "    //执行\n",
+    "    public static void CompareExchange()\n",
+    "    {\n",
+    "        //随机休眠,打乱多线程执行顺序\n",
+    "        Thread.Sleep(Random.Shared.Next(100,500));\n",
+    "\n",
+    "        //原子操作:比较替换\n",
+    "        int y;\n",
+    "        while(true)\n",
+    "        {\n",
+    "            y = ShareNumber;\n",
+    "            int oldShareValue = System.Threading.Interlocked.CompareExchange(ref ShareNumber,y+1,y);\n",
+    "\n",
+    "            if(oldShareValue == y)\n",
+    "            {\n",
+    "                break;\n",
+    "            }\n",
+    "        }\n",
+    "\n",
+    "        Console.WriteLine($\"线程[{Thread.CurrentThread.Name}] 替换前的值为 {y+1}\");\n",
+    "    }\n",
+    "}\n",
+    "\n",
+    "//使用域隔离和代码折叠\n",
+    "{\n",
+    "    var threads =  new List<Thread>()\n",
+    "    {\n",
+    "        new Thread(Counter4CompareExchange.CompareExchange){Name=\"thread_a\"},\n",
+    "        new Thread(Counter4CompareExchange.CompareExchange){Name=\"thread_b\"}\n",
+    "    };\n",
+    "\n",
+    "    threads.ForEach(t => t.Start());\n",
+    "    threads.ForEach(t => t.Join());\n",
+    "\n",
+    "    //主线程信息\n",
+    "    Console.WriteLine($\"主[执行]线程获共享变量 ShareNumber 最终的值 = {Counter4CompareExchange.ShareNumber}\");\n",
+    "}\n",
+    "\n",
+    "//原子替换:\n",
+    "//1、两个线程同时执行会输出: 1 2 或 2 1\n",
+    "//2、全局变量最终的值为 2"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## 原子读取 Interlocked.Read()"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "从内存读取值通常都是原子的,除非32位平台读取64位数据,比如32位平台上读取 long 型数值。因为32位平台读取64位数据是分高位和低位两次读取操作的,所以不是原子操作。原子读取一般会与其它原子操作配合使用。"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "dotnet_interactive": {
+     "language": "csharp"
+    },
+    "polyglot_notebook": {
+     "kernelName": "csharp"
+    },
+    "vscode": {
+     "languageId": "polyglot-notebook"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "//原子读取\n",
+    "public class Counter4Read\n",
+    "{\n",
+    "    //共享变量,64位数据\n",
+    "    public static long ShareNumber = 0;\n",
+    "\n",
+    "    //循环次数\n",
+    "    public readonly static int LoopNumber = 10000;\n",
+    "\n",
+    "    //一个线程循环替换数据\n",
+    "    public static void Exchange()\n",
+    "    {\n",
+    "       for(int i=0; i< LoopNumber; i++)\n",
+    "       {\n",
+    "            System.Threading.Interlocked.Exchange(ref ShareNumber,0x7aaabbbbccccdddd);\n",
+    "       }\n",
+    "    }\n",
+    "    \n",
+    "    //一个线程循环读取\n",
+    "    //无论多少次读取的都是 0 或者 0x7aaabbbbccccdddd\n",
+    "    //不可能是 0x7aaabbbb00000000 或者 ccccdddd\n",
+    "    public static void Read()\n",
+    "    {\n",
+    "        for(int i=0; i< LoopNumber; i++)\n",
+    "        {\n",
+    "            long y = System.Threading.Interlocked.Read(ref ShareNumber);\n",
+    "\n",
+    "            //此条件应该永远不成立\n",
+    "            if(y==0x7aaabbbb00000000 || y==0x00000000ccccdddd)\n",
+    "            {   \n",
+    "                Console.WriteLine($\"线程[{System.Threading.Thread.CurrentThread.Name}], 读取到非原子值{y}\");\n",
+    "            }\n",
+    "        }\n",
+    "    }\n",
+    "}\n",
+    "\n",
+    "//使用域隔离和代码折叠\n",
+    "{\n",
+    "    var threads =  new List<Thread>()\n",
+    "    {\n",
+    "        new Thread(Counter4Read.Exchange){Name=\"thread_a\"},\n",
+    "        new Thread(Counter4Read.Read){Name=\"thread_b\"}\n",
+    "    };\n",
+    "\n",
+    "    threads.ForEach(t => t.Start());\n",
+    "    threads.ForEach(t => t.Join());\n",
+    "\n",
+    "    //主线程信息\n",
+    "    Console.WriteLine($\"主[执行]线程获共享变量 ShareNumber 最终的值 = {Counter4Read.ShareNumber}\");\n",
+    "}\n",
+    "\n",
+    "//原子读取:\n",
+    "//1、无论多少次读取的都是 0 或者 0x7aaabbbbccccdddd 不可能是 0x7aaabbbb00000000 或者 ccccdddd\n",
+    "//2、全局变量最终的值为 0x7aaabbbbccccdddd 即是 8839083633937276381 或者极概率是 0"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## 内存屏障 Interlocked.MemoryBarrier()"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "System.Threading.Interlocked 还提供了一些其它方法,比如内存屏障相关的 MemoryBarrier() 和 MemoryBarrierProcessWide() 和 新的 And() Or()方法等。"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "dotnet_interactive": {
+     "language": "csharp"
+    },
+    "polyglot_notebook": {
+     "kernelName": "csharp"
+    },
+    "vscode": {
+     "languageId": "polyglot-notebook"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "/*\n",
+    "System.Threading.Interlocked.MemoryBarrier();\n",
+    "System.Threading.Interlocked.MemoryBarrierProcessWide();\n",
+    "System.Threading.Interlocked.And();\n",
+    "System.Threading.Interlocked.Or();\n",
+    "*/"
+   ]
   }
  ],
  "metadata": {
diff --git a/MultiThreadingStudy.ConsoleApp/Program.cs b/MultiThreadingStudy.ConsoleApp/Program.cs
index baf876c..b007d48 100644
--- a/MultiThreadingStudy.ConsoleApp/Program.cs
+++ b/MultiThreadingStudy.ConsoleApp/Program.cs
@@ -12,8 +12,9 @@ namespace MultiThreadingStudy.ConsoleApp
            // ThreadLocalStorage.UseDataSlot();
            // ThreadLocalStorage.UseThreadStaticAttribute();
            // ThreadLocalStorage.UseThreadLocalClass();
-            ThreadLocalStorage.UseAsyncLocalClass();
+           // ThreadLocalStorage.UseAsyncLocalClass();
 
+            Console.WriteLine("选中的操作执行完成,主线程退出!");
         }
     }
 }
\ No newline at end of file