Designing WhatsApp: A Comprehensive Guide

TLDRLearn how to design a chat-based application like WhatsApp, with features like group messaging, read receipts, image sharing, and more.

Key insights

📱WhatsApp's key features include group messaging and read receipts.

📷Image sharing is another essential feature of WhatsApp.

🕐WhatsApp uses timestamps to indicate when a message was sent, delivered, and read.

🔵WhatsApp displays an online status to indicate if a user is currently active.

🔴WhatsApp allows users to delete messages, making them temporary in nature.

Q&A

What are the key features of WhatsApp?

WhatsApp has group messaging, read receipts, image sharing, and online status indicators.

How does WhatsApp handle message timestamps?

WhatsApp uses timestamps to show when messages were sent, delivered, and read.

Can WhatsApp messages be permanently deleted?

WhatsApp allows users to delete messages, making them temporary in nature.

Does WhatsApp show if a user is online?

WhatsApp displays an online status to indicate if a user is currently active.

Is image sharing possible on WhatsApp?

Yes, WhatsApp allows users to share images with each other.

Timestamped Summary

00:00Introduction to designing WhatsApp as a chat-based application.

03:31Exploring the architecture and flow of messages in WhatsApp's system design.

09:58Understanding message delivery receipts and read receipts in WhatsApp.

11:02Discussing how WhatsApp handles user online status and last seen timestamps.

14:46Covering features like load balancing, service discovery, and authentication in WhatsApp's architecture.