diff --git a/book/contents/SUMMARY.md b/book/contents/SUMMARY.md
index 7bdda15b..b7e3fcdb 100644
--- a/book/contents/SUMMARY.md
+++ b/book/contents/SUMMARY.md
@@ -213,9 +213,11 @@
     - [常用性能测试工具](performance/tools.md)
 
 - [编译器 todo](compiler/intro.md)
-    - [常见属性标记](compiler/attributes.md)
-    - [优化编译速度](compiler/speed-up.md)
-    
+    - [常见属性标记 todo](compiler/attributes.md)
+    - [提升编译速度 todo](compiler/speed-up.md)
+    - [编译器优化](compiler/optimization/intro.md)
+      - [Option枚举](compiler/optimization/option.md)
+
 - [日志和监控 todo](monitor/intro.md)
     - [日志](monitor/log.md)
     - [可观测性](monitor/observability.md)
diff --git a/book/contents/compiler/optimization/intro.md b/book/contents/compiler/optimization/intro.md
new file mode 100644
index 00000000..659cc68f
--- /dev/null
+++ b/book/contents/compiler/optimization/intro.md
@@ -0,0 +1,3 @@
+# 编译器优化
+
+在Rust中，一段很不起眼的代码中可能也隐藏着玄机，编译器在细无声的为我们做着各种优化，本章将记录这些优化，帮助大家更好的理解程序的性能。
\ No newline at end of file
diff --git a/book/contents/compiler/optimization/option.md b/book/contents/compiler/optimization/option.md
new file mode 100644
index 00000000..f65ae257
--- /dev/null
+++ b/book/contents/compiler/optimization/option.md
@@ -0,0 +1 @@
+# Option枚举
diff --git a/book/contents/img/.DS_Store b/book/contents/img/.DS_Store
index a720346e..79f25199 100644
Binary files a/book/contents/img/.DS_Store and b/book/contents/img/.DS_Store differ
diff --git a/exercise/README.md b/exercise/README.md
index 04d32df6..28d9be28 100644
--- a/exercise/README.md
+++ b/exercise/README.md
@@ -4,7 +4,8 @@ Rust练习题，是Rust学习教程的第二步，请在完成[第一步](https:
 本项目从[rustling](https://github.com/rust-lang/rustlings)fork而来，主要有以下改变：
 1. 翻译成中文
 2. 为<<精通Rust编程>>一书提供相应的配套练习题
-
+3. 未来提供一些更有针对性和更有难度的习题，官方的还是太简单了
+   
 ## 开始使用
 
 _注意: 如果你在使用MacOS，确保已经安装了Xcode以及相应的开发者工具 `xcode-select --install`._
diff --git a/pratice/mini-redis/README.md b/pratice/mini-redis/README.md
index 0ec91df1..cf83b516 100644
--- a/pratice/mini-redis/README.md
+++ b/pratice/mini-redis/README.md
@@ -1,5 +1,8 @@
 # mini-redis
 
+本项目从[tokio/mini-redis](https://github.com/tokio-rs/mini-redis)fork而来，作为rust course的练习项目之一，**文档和注释还未进行翻译**，欢迎大家贡献。
+
+
 `mini-redis` is an incomplete, idiomatic implementation of a
 [Redis](https://redis.io) client and server built with
 [Tokio](https://tokio.rs).