📝 Writing docs.

crossoverJie · crossoverJie · commit a16789517642 · 2018-05-20T17:00:35.000+08:00
diff --git a/README.md b/README.md
@@ -48,11 +48,11 @@ Java 知识点，继续完善中。
 
 - [Spring Bean 生命周期](https://github.com/crossoverJie/Java-Interview/blob/master/MD/spring/spring-bean-lifecycle.md)
 - [Spring AOP 的实现原理](https://github.com/crossoverJie/Java-Interview/blob/master/MD/SpringAOP.md) 
+- 基于 Netty 的长连接心跳
 - SpringBoot 启动过程
 - Tomcat 类加载机制
 
 
-
 ### 架构设计
 - [秒杀系统设计](https://github.com/crossoverJie/Java-Interview/blob/master/MD/Spike.md)
 - [秒杀架构实践](http://crossoverjie.top/2018/05/07/ssm/SSM18-seconds-kill/)
