From 3f8c8a8b7a7102233af02ad689d1b8301dde993b Mon Sep 17 00:00:00 2001
From: SnailClimb <koushuangbwcx@163.com>
Date: Wed, 22 May 2019 22:23:47 +0800
Subject: [PATCH] =?UTF-8?q?Update=20=E8=AE=BE=E8=AE=A1=E6=A8=A1=E5=BC=8F.m?=
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 docs/system-design/设计模式.md | 2 +-
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diff --git a/docs/system-design/设计模式.md b/docs/system-design/设计模式.md
index 01f8b339..6af52e41 100644
--- a/docs/system-design/设计模式.md
+++ b/docs/system-design/设计模式.md
@@ -71,7 +71,7 @@
 - **迭代器模式：**
 - **中介者模式：** <https://design-patterns.readthedocs.io/zh_CN/latest/behavioral_patterns/mediator.html>
 - **备忘录模式：**
-- **观察者模式：** <https://design-patterns.readthedocs.io/zh_CN/latest/behavioral_patterns/observer.html>
+- **观察者模式：** <https://design-patterns.readthedocs.io/zh_CN/latest/behavioral_patterns/observer.html>、<https://juejin.im/post/5c712ab56fb9a049a7127114>
 - **状态模式：**<https://design-patterns.readthedocs.io/zh_CN/latest/behavioral_patterns/state.html>
 - **策略模式：**<https://design-patterns.readthedocs.io/zh_CN/latest/behavioral_patterns/strategy.html>