The Whatsapp system architecture is a common system design interview question. In this video, we will cover features like one to one messaging, sent/delivery/read receipts, and last online status. This design needs to be scalable, resilient and highly available, and secure.
In addition to the design, this whiteboard architecture is also implemented using AWS services.
0:00 Requirements and features
2:44 System Design
13:03 Sent/Deliver/Read Receipt
15:21 Last Online Status
18:14 Implementing Security
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