Grokking the AI System Design Interview

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Capstone: People You May Know

1. The Exercise

This is a fresh problem, and it shows up word for word in real interview loops. LinkedIn and Meta both ask variants of it. It was picked deliberately because it is none of the five designs you just studied, and yet the whole answer assembles itself from their parts.

"Design 'People You May Know' for a professional network: 900 million members, the suggestion module appears on the home page and after sign-up. Suggest people the member is likely to know and connect with."

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