11. Design a Instance Messager

---

title: Notes of System Design No.05 — Design a Instance Messager
description: ‘Design a Messager’
date: 2022-05-14 13:45:37
tags: 系统设计
categories:

• 系统设计

---

01. Funtional Requirements

02. Non Functional Requirements

03.Assumption

04 API

05 High Level Design

06 Low Level Design

07 Scalability