diff --git a/java/registry/zookeeper-all-in-one.md b/java/registry/zookeeper-all-in-one.md
index 9f9dacf..94e2563 100644
--- a/java/registry/zookeeper-all-in-one.md
+++ b/java/registry/zookeeper-all-in-one.md
@@ -6,16 +6,25 @@
 
 - [Zookeeper 一文通](#zookeeper-一文通)
     - [Zookeeper 网络模型](#zookeeper-网络模型)
+        - [Client <-> Server](#client---server)
+        - [Server node 之间](#server-node-之间)
     - [Zookeeper 存储模型](#zookeeper-存储模型)
     - [Zookeeper 数据多节点一致性保证](#zookeeper-数据多节点一致性保证)
     - [Zookeeper 经典应用场景](#zookeeper-经典应用场景)
+    - [Zookeeper 跨机房部署结构](#zookeeper-跨机房部署结构)
     - [参考](#参考)
 
 <!-- /TOC -->
 
 ## Zookeeper 网络模型
 
+### Client <-> Server
 
+NIO
+
+### Server node 之间
+
+TCP，直连
 
 ## Zookeeper 存储模型
 
@@ -23,4 +32,6 @@
 
 ## Zookeeper 经典应用场景
 
+## Zookeeper 跨机房部署结构
+
 ## 参考
\ No newline at end of file