Hash tags make atomic leaderboard updates work in Redis Cluster, but they do not split one leaderboard across nodes. Here is the architecture and its honest scaling boundary.
"We use Redis Cluster" can mean two very different things:
Our dataset is distributed across Redis nodes.
Every individual data structure is distributed across Redis nodes.
The first can be true while the second is false.
That distinction matters for leaderboards.
Redis sorted sets make leaderboards easy, until two players have the same score. Here is how we made ties fair, deterministic,…
Welcome to another post in the "Under the Hood" series. The power of Redis lies in its simplicity....
We replaced Redis's arbitrary equal-score ordering with first-arrival wins, then measured the latency and memory bill instead of…
Replication, sharding, CAP tradeoffs, and a decision framework for choosing between PostgreSQL, MongoDB, and Cassandra in a…
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Table of Contents 1. High-Performance Rate Limiting (Sliding Window Log) 2. Reliable...
