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--- a/README.md
+++ b/README.md
@@ -1,13 +1,15 @@
 # 技术分享PPT
-
 在公司内部及社区中分享的PPT.
 
 ## Download
 
 [download in github](https://github.com/rfyiamcool/share_ppt/tags)
 
-## MENU
+## Agenda
 
+- [网络编程那些事儿-meican](#网络编程那些事儿-meican)
+- [apache pulsar的设计实现原理](#ApachePulsar的设计实现原理)
+- [Qcon海量长连接消息推送系统实践](#Qcon海量长连接消息推送系统实践)
 - [网络编程那些事儿](#网络编程那些事儿)
 - [Golang项目实战](#Golang项目实战)
 - [Etcd的设计与实现](#Etcd的设计与实现)
@@ -42,6 +44,75 @@
 
 ## LIST
 
+### 网络编程那些事儿-meican
+
+#### 分享时间
+
+2023-12-20
+
+#### ppt地址
+
+[下载地址](network_skill.pdf)
+
+#### 截图
+
+<img src="http://github.com/images/network_skill_1.png" width="70%">
+<img src="http://github.com/images/network_skill_2.png" width="70%">
+<img src="http://github.com/images/network_skill_3.png" width="70%">
+<img src="http://github.com/images/network_skill_4.png" width="70%">
+
+### ApachePulsar的设计实现原理
+
+#### 分享时间
+
+2023-10-12
+
+#### 内容
+
+- Apache pulsar 的架构设计
+- Pulsar broker 的计算层设计
+- 系统 IO 的介绍 (page cache, buffered io, direct io ...)
+- Pulsar bookKeeper 的存储层设计
+- Pulsar 的高级功能设计
+- QA
+
+#### ppt地址
+
+[下载地址](apache-pulsar.pdf)
+
+#### 截图
+
+<img src="http://github.com/images/pulsar_1.jpg" width="70%">
+<img src="http://github.com/images/pulsar_2.jpg" width="70%">
+<img src="http://github.com/images/pulsar_3.jpg" width="70%">
+<img src="http://github.com/images/pulsar_4.jpg" width="70%">
+
+### Qcon海量长连接消息推送系统实践
+
+#### 分享时间
+
+2021-06-30
+#### 内容
+
+- 超百万的⻓连接接入
+- 每天近 100 亿条消息
+- 高峰值时每秒 70w+ 条消息 目标
+- 如何尽量保证消息的低延迟
+- 如何保证系统的高并发
+- 如何保证消息的可靠性
+- 如何保证系统的可用性
+- ...
+
+#### ppt地址
+
+[下载地址](qcon_push_service.pdf)
+
+#### 截图
+
+<img src="http://github.com/images/qcon_push_service01.jpg" width="70%">
+<img src="http://github.com/images/qcon_push_service02.jpg" width="70%">
+<img src="http://github.com/images/qcon_push_service03.jpg" width="70%">
+
 ### 网络编程那些事儿
 
 #### 分享时间
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