Chat Application

We are going to apply the framework we discussed in the frontend system design guide, consider tradeoffs, and explore how we would build a system like a Chat Application a.k.a. WhatsApp Web UI from the frontend point of view.

Problem Statement

You are the frontend lead at a large organisation that plans to build a real-time web-based chat application, similar in scope to WhatsApp Web. So, how would you go about it?

Expectations

No one can effectively build a complete product like WhatsApp-like chat application in a 1-hour discussion. The idea with Frontend System Design interviews is not to make sure you t...