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The Framework proposed in this space (Alex Xu) is applied to propose a design : Getting started - a framework to propose...

Introduction

A notification alerts a user with important info like events, … It’s more than just mobile push notifications.

There are 3 types of notification formats are : mobile push notification, SMS message and Email.

On this page.

Table of Contents

Step 1 - Understand the problem and establish the scope

Types of notifications to support ?

Push notifications, SMS Message and Email

Real-time System ?

Real-time, but a delay is acceptable.

Supported devices ?

iOS devices, android devices and laptop/desktop.

Triggers ?

Triggered by client app and scheduled on the server-side.

Users be able to opt-out ?

Chose to opt-out means no longer receive notifications.

How many notifications per day ?

10 million for Mobile push notif., 1 million for SMS, 5 millions for emails.

Step 2 - High-level design

No need to propose a high-level design with a single server setup because of the following reasons :

  • One single notification server, so a single point of failure.

  • Challenging to scale (limitations).

  • Processing and sending notifications could be resource intensive.

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Step 3 - Design deep dive

Step 4 - Pros & Cons