diff --git a/free-programming-books-zh.md b/free-programming-books-zh.md
index d6d12e364..da8a2aeca 100644
--- a/free-programming-books-zh.md
+++ b/free-programming-books-zh.md
@@ -74,3 +74,4 @@
 
 ### Database
 * [The Little MongoDB Book 中文版](https://github.com/justinyhuang/the-little-mongodb-book-cn)
+* [Redis 设计与实现](http://www.redisbook.com)