Pattern series
Top-K Ranking
3 System Design questions share this exact tag. Use the closely related series below for a fuller drill.
- 01Preview
Game Leaderboard
Design a real-time game leaderboard that ranks millions of players by score, supports regional and time-windowed boards, and serves both top-N and a g...
Strava - 02Preview
Search Bar Autocomplete
Design the autocomplete/typeahead system behind a search bar that returns the top-K query suggestions for a partial prefix within a sub-50ms budget, a...
Meta - 03Free guide
Top K Songs (Spotify)
Design Spotify's Top-K most-played songs feature — compute top charts over sliding time windows at listening-event scale.
Spotify / Meta