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System design interview question · Backend

Design a chat system

Create a real-time messaging experience for millions of people.

Intermediate 45 minutesMessaging Plus
More Backend questions

Concepts this round covers

  • WebSocket connections
  • Message ordering
  • Offline delivery
  • Messaging

This is a Plus round

The brief, the scale to design for, the questions interviewers ask and the common mistakes for this round are available to Plus members. Plus is coming soon.

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