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System design interview question · Backend

Design a collaborative document editor

Let multiple people edit and comment on the same document in real time.

Advanced 60 minutesCollaboration Plus
More Backend questions

Concepts this round covers

  • Conflict-free editing
  • Presence and reconnects
  • Version history
  • Collaboration

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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More Backend system design interview questions

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Design a URL shortener

Build a service that turns long links into short, shareable URLs.

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Design a chat system

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

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Design a news feed

Deliver a relevant, fresh feed as people and publishers post.

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Backend·Storage

Design cloud file storage

Sync large files reliably across devices and collaborators.

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Design an API rate limiter

Protect a public API without slowing down well-behaved clients.

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Design video streaming

Stream adaptive-quality video to a global audience.

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