System Design Interview: Design Whatsapp w/ a Ex-Meta Senior Manager

00:00 Intro
01:14 The Approach
02:10 Requirements
09:40 Core Entities
12:29 API
17:23 High-Level Design
31:53 Deep Dives
54:59 Conclusion

A step-by-step breakdown of the popular FAANG+ system design interview question, Design Whatsapp, which is asked at top companies like Meta, Google, Amazon, Microsoft, and more.

Stefan, a former Meta senior manager and current co-founder of Hello Interview, walks through the problem from the perspective of a candidate and an interviewer who has observed a number of engineers solving this problem.

Resources:
1. Detailed write up of the problem: www.hellointerview.com/learn/system-design/problem…
2. Real-Time Updates deep dive (connections, pub/sub, consistent hashing): www.hellointerview.com/learn/system-design/deep-di…
3. System Design In a Hurry: www.hellointerview.com/learn/system-design/in-a-hu…
4. Vote for the question you want us to do next: www.hellointerview.com/learn/system-design/in-a-hu…

Connect with me on LinkedIn: www.linkedin.com/in/stefanmai/

Preparing for your upcoming interviews and want to practice with top FAANG interviewers like Stefan? Book a mock interview at www.hellointerview.com.

Good luck with your upcoming interviews!