Architect a high-throughput File Storage Engine
Last updated: May 17, 2026
Quick Overview
Design a high-throughput file storage system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
OpenAI
May 17, 202639
5
2,175 solved
Design a high-throughput file storage system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
OpenAI asks this during the Technical Screen to assess your depth in software engineering. They want to see understanding of design patterns, system architecture, and the trade-offs involved in different technical approaches.
What the Interviewer Expects
- Apply engineering principles to a realistic design scenario
- Discuss trade-offs between different approaches with concrete examples
- Demonstrate understanding of testability, maintainability, and extensibility
- Connect theoretical concepts to production engineering practices
- Discuss how the approach scales with team and codebase size
Key Topics to Cover
How to Approach This
- Apply SOLID principles. Single Responsibility makes code testable, Open/Closed makes it extensible.
- Choose data structures based on access patterns, not familiarity.
- Prefer immutable data and message passing over shared mutable state for concurrency.
- Design APIs with RESTful conventions, versioning, meaningful errors, and pagination from day one.
Possible Follow-up Questions
- How would you document this for other engineers?
- How would you measure the performance of this component in production?
- How would this design change if the team size doubled?
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Core Design Principles
For the high-throughput file storage system, key design principles include:
- CAP Theorem: We must balance consistency, availability, and partition tolerance. Given the requirements for high thr...
Architecture
The recommended architecture for OpenAI's file storage engine would be a microservices-based architecture with the following components:
- File Storage Service: Handles file uploads and downloads...
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