Design a Video Streaming for Uber
Last updated: March 25, 2026
Quick Overview
Design a scalable video streaming system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Uber
March 25, 2026391
15
2,407 solved
Design a scalable video streaming system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Uber asks this during the Onsite to assess your architectural thinking. They want to see how you decompose a complex problem, choose appropriate technologies, and reason about failure modes. Strong candidates proactively discuss monitoring, alerting, and operational concerns.
What the Interviewer Expects
- Clearly define functional and non-functional requirements
- Propose a reasonable high-level architecture with core components
- Choose appropriate data storage solutions with basic justification
- Discuss basic scaling strategies (horizontal scaling, caching)
- Identify potential bottlenecks and suggest simple solutions
Key Topics to Cover
How to Approach This
- Start by clarifying functional and non-functional requirements with the interviewer.
- Estimate the scale: QPS, storage, bandwidth. This drives your design decisions.
- Draw a high-level architecture first, then deep dive into 1-2 critical components.
- Discuss trade-offs explicitly (e.g., consistency vs availability, SQL vs NoSQL).
- Address failure scenarios, monitoring, and how the system handles 10x traffic spikes.
Possible Follow-up Questions
- How would you handle a 10x increase in traffic overnight?
- How do you ensure data consistency across multiple services?
- What happens if one of your database nodes goes down?
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Requirements
Functional Requirements
- User Uploads: Allow users to upload videos with metadata (title, description, tags).
- Video Streaming: Support adaptive bitrate streaming for varying network c...
Capacity Estimation
Assuming Uber has a user base of roughly 100 million users:
- Daily Active Users (DAU): 10% of total users = 10 million DAU.
- Video Uploads: Assuming each user uploads 1 video per month, we h...
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