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While this loads — worth knowing
Redis has data structures — sorted sets, counters, pub/sub. Memcached has plain keys and nothing else.
Loading…
While this loads — worth knowing
Redis has data structures — sorted sets, counters, pub/sub. Memcached has plain keys and nothing else.
Loading the challenge…
While this loads — worth knowing
Redis has data structures — sorted sets, counters, pub/sub. Memcached has plain keys and nothing else.
A mobile puzzle game with four million daily players shows a global leaderboard and one per country, both updated the instant a player finishes a level. Players open the leaderboard constantly to see their own rank and the ten players either side of them, so reads must come back in a few milliseconds even at peak. The team wants one managed store that keeps scores in sorted order natively and holds them durably, so that a node failure never resets anyone's rank and there is no separate database to keep in step. The game already calls an HTTPS API, and the backend should scale with players without servers to manage.
Signing in is what lets the tool remember what you built and what you found hard. One challenge is free to try without an account.