Design a Way to Find Restaurants Quiet Enough to Talk at a Given Date and Time

Asked at Palantir · System Design for ML · Difficulty: Medium · Last asked Nov 5, 2026

Design a way for people to pick a restaurant where they will be able to talk without raising their voices, for one particular evening or lunchtime they have in mind. A user says where, when and for how many people, and gets a short list of places that should be quiet enough to talk at that moment, not just quiet on average. Decide who the user is, what the first version does, which data it relies on, how you would measure that it works, and what the system looks like.

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