Design a News Aggregator

A news aggregator like Google News collects articles from thousands of publishers and serves personalized feeds to millions of users. With 50,000+ publishers producing 5 million articles daily and 10 million monthly active users, this system design question tests your understanding of data ingestion pipelines, caching strategies, and personalization at scale.

This walkthrough follows the Interview Framework and focuses on what you'd actually present in a 45-60 minute interview.