Creating Game Leaderboards with Redis
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The leaderboard adds a whole new dimension to your video game. It's a means of building rivalry between players and deepening their engagement with the game. But, like most things in gaming, building a leaderboard comes with its own technical challenges.
Creating Game Leaderboards with Redis
- 1. Creating Gaming Leaderboards Using Redis Ronny L坦pez Technical Lead Backend Ronny.lopez@socialpoint.es
- 2. Leaderboards Effective way to show where a user stands within a gamified system Absolute leaderboards incentivize Relative leaderboards avoid disengagement of players at lower end of rankings Several type of rankings (weekly, monthly, friends, ) 2
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- 6. Requirements Add member Remove member Update member score Find member score Find member rank Associate data to members (Name, Alliance, etc) Get slices of the ranking (for pagination) 6
- 7. Architecture Scalable to serve several million active users Performance is a must 7
- 8. Implementation Redis data structure server Sorted set data structure Different sorted sets for different kinds of rankings Redis hash data structure for member associated data Lua scripting for aggregating in-memory data (Sorted) Sets operations (union, intersection, etc) 8
- 9. Challenges Horizontal scaling It is not possible to shard a dataset with a single huge key like a very big sorted set Two-phase commits if you want to execute a transaction among different data stores 9
- 10. Summary Redis is the right tool for the job, but datasets can not be bigger than memory Exceptional performance (more than 8K leaderboard ops per second in a single instance) Easy to use and understand technology Mature and open source 10