Your question is Online Block Diagram Editor. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Design an online block diagram maker application featuring real-time collaborative updates for multiple users and handling of an infinite canvas.
Asked in the Systems design stage.
Explain the end-to-end design, including client-server communication, operation ordering, conflict resolution, persistence, viewport-aware rendering, reconnection, and failure handling. Clarify assumptions about collaboration semantics, durability, access control, and performance before proposing the architecture.