KV Leaderboard and Matchmaker Queue → Lesson 3: Leaderboard leaderboard:season:12 sorted set score player's points KEY: leaderboard:season:12 VALUE: sorted set { player_42: 4750, player_7: 3390,...} —------------------------------------------------------ matchmaking:queue:ranked list: waiting queue ZADD leaderboard:season:12 4,750 player_42 ZRANGE leaderboard:season:12 0 99 REV 1) player_1042 2) player_42 3) player_7 … (ZREVRANGE is deprecated as of Redis 6.2) ZREVRANK leaderboard:season:12 player_42 position starting from zero; nil — player does not exist —------------------------------------------------------ (FIFO queue) RPUSH matchmaking:queue:ranked player_42 LPOP matchmaking:queue:ranked The rankings are updated after every match, and the top positions are viewed thousands of times per second