Rate Limiting Express (express-rate-limit) Redis Sliding Window (custom) Algorithm Comparison | Algorithm | Precision | Memory | Best For | |-----------|-----------|--------|----------| | Fixed window | Low (burst at edges) | Very low | Simple APIs | | Sliding window log | High | Medium | Accurate limiting | | Sliding window counter | Medium | Low | Balance of accuracy & memory | | Token bucket | Medium | Low | Burst-friendly APIs | Spring Boot (Bucket4j) Response Headers Anti-Patterns | Anti-Pattern | Fix | |--------------|-----| | In-memory rate limiting in multi-server | Use Redis-backed s…