Design a News Aggregator (Google News)

Also reported as News Feed System Design

System DesignRipplingLast reported September 2026High Frequency
Reported
27× across candidate reports
First seen
October 2025
Last reported
September 2026
Reported outcome
mixed

Problem Overview

Design a news aggregator like Google News. The system pulls articles from many third-party publishers (one report names CNN and WSJ) through their APIs, feeds or a crawler, and stores only metadata: title, summary, category or topic id, and URL. It does not produce content. Requirements one candidate lists verbatim:…

  • 10 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.
Codex Fact-Checked
Technical claims, formulas, and scale numbers are reviewed against primary sources.
Interviewer Follow-ups
The exact follow-ups reported by candidates, with the trigger that prompts each one — plus the mistakes that sink people.
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