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Design a Real-time Gaming Leaderboard is a easy system design interview question covering Databases, redis, sorted sets, caching — the kind asked at FAANG (Facebook/Meta, Apple, Amazon, Netflix, Google) and AI-first companies like Anthropic, OpenAI, and Nvidia.
Design a leaderboard for 100 million players with 50,000 score updates per second. Queries: global top 100, a player's exact rank, the 10 players around them, friends-only boards, and daily/weekly/season windows that reset without downtime.
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