Sliding Window with Sorted Sets in Redis
Implement an accurate distributed sliding window rate limiter using Redis sorted sets, with atomic operations and automatic expiry of old entries.
From Theory to Production
You understand the sliding window log and counter conceptually. Now build one that works across many servers using Redis sorted sets, the most common production technique for accurate distributed rate limiting.
Why Sorted Sets
A Redis sorted set (ZSET) stores members ranked by a numeric score. By using the request timestamp as the score, we get an ordered log of recent requests we can trim and count efficiently.
All lessons in this course
- Sliding Window Log Implementation
- Sliding Window Counter Strategy
- Algorithm Comparison and Trade-offs
- Sliding Window with Sorted Sets in Redis