Backend Engineering
Advanced Rate Limiting Algorithms with Redis
April 11, 2025
Simple rate limiting (100 requests per minute) allows for dangerous bursting behavior. If a user sends 100 requests in a single second, they can overwhelm the system before the counter resets.
Sliding Window Protocols
We implemented a highly efficient sliding window log in Redis. This ensures request volume is smoothed out over time, preventing sudden traffic spikes from degrading service for other API subscribers.