File Storage Engine System Design with Indexing

System DesignSnowflakeLast reported November 2025Low Frequency

Reported: 2× across candidate reports
First seen: May 2025
Last reported: November 2025
Reported outcome: unknown

Problem Overview

Design a file storage engine (similar in spirit to Amazon S3) with indexing support. The system should handle file upload, retrieval, and indexing in a distributed environment. A key focus is on avoiding duplicate file…

4 candidate-reported follow-ups — the exact probes interviewers asked, with the trigger for each
The rest of the problem statement — full requirements, constraints, and edge cases
Approach and trade-offs — what passing candidates did, and the mistakes that sink people

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Verified Source

Every question is reconstructed from multiple independent candidate reports. Verbatim follow-ups, not invented ones.

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Interviewer Follow-ups

The exact follow-ups reported by candidates, with the trigger that prompts each one — plus the mistakes that sink people.