Notification Service System Design Interview Question to handle Billions of users & Notifications

Solution for System Design Interview Question - "Design a Notification Service, that would be used to send Email/ SMS/ Push notifications to billions of users."

This is being asked by a lot of companies lately like Twitter, Uber, Google, Amazon, etc.

Prerequisites:
How to select the right Database for a Large Scale System:    • Database Design Tips | Choosing the B...  

Summary of the video: https://www.codekarle.com/system-desi...

Architecture diagram: https://github.com/codekarle/system-d...

Author:   / sandeep1904  

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PS: This is not the real architecture of any such platform. This is my take on how I would answer that problem.

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