System Design - Chat Service

Hi, everyone. In today's video, I will attempt to design a system for a chat service. My goal is to meet the following requirements:

Chat Service System Design:

Ensure scalability for both one-on-one and group chats while maintaining low-latency message delivery.

Support a high number of concurrent user connections.

Implement features such as read receipts, typing indicators, and access to historical messages.

Anticipate a user base growth to 5M+ and scale accordingly with the volume of messages.

Please remember to verify the information presented in this video. While I bring my system design experience to the table, there are many skilled professionals with more profound expertise. My approach may contain oversights.

I welcome your thoughts, comments, and constructive feedback. I am on a journey of learning and improvement and would greatly appreciate your input!