From ae172f377092fcf3630d573469db7cdce56a8e41 Mon Sep 17 00:00:00 2001
From: Unisko PENG <unisko@gmail.com>
Date: Mon, 3 Apr 2023 10:11:14 +0800
Subject: [PATCH] Update Ch20 and optimize .gitignore

---
 .gitignore                                             |  1 +
 ...inal_Project_Building_a_Multithreaded_Web_Server.md | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/.gitignore b/.gitignore
index fcffd36..4d17e7b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 book
 target
 Cargo.lock
+*.html
diff --git a/src/Ch20_Final_Project_Building_a_Multithreaded_Web_Server.md b/src/Ch20_Final_Project_Building_a_Multithreaded_Web_Server.md
index b6ea69f..4a109f7 100644
--- a/src/Ch20_Final_Project_Building_a_Multithreaded_Web_Server.md
+++ b/src/Ch20_Final_Project_Building_a_Multithreaded_Web_Server.md
@@ -566,3 +566,13 @@ fn main() {
 ```
 
 *清单 20-11：为每个 TCP 流生成一个新线程*
+
+如同咱们在第 16 章中所学到的，`thread::spawn` 讲创建出一个新线程，并于随后在新线程中，运行那个闭包中的代码。当咱们运行此代码，并在浏览器中加载 `/sleep`，随后在另外两个浏览器 Tab 页中加载 `/`，咱们就会看到到 `/` 的请求就不必等待 `/sleep` 请求完毕了。不过，如同咱们曾提到过的，因为咱们正不带任何限制地构造新线程，而最终将使系统不堪重负。
+
+
+#### 创建有限数目的线程
+
+**Creating a Finite Number of Threads**
+
+
+