Redis Rate Limiter
- 5 installs
- 1 repo stars
- Updated March 10, 2026
- davidcastagnetoa/skills
Implement a sliding-window rate limiter in Redis using sorted sets to cap verification attempts per IP, device, and document number.
About
Builds a Redis sorted-set sliding-window rate limiter keyed by IP, device, or document to block brute-force attempts. A developer uses it when enforcing app-level attempt limits beyond gateway IP throttling.
- Sorted-set sliding window (ZADD/ZREMRANGEBYSCORE/ZCARD) with per-key expiry
- Standard X-RateLimit-* and Retry-After headers; Lua scripts for atomicity
Redis Rate Limiter by the numbers
- 5 all-time installs (skills.sh)
- Ranked #1,725 of 2,203 Security skills by installs in the Skillselion catalog
- Data as of Jul 8, 2026 (Skillselion catalog sync)
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| Installs | 5 |
|---|---|
| repo stars | ★ 1 |
| Last updated | March 10, 2026 |
| Repository | davidcastagnetoa/skills ↗ |
What it does
Implement a sliding-window rate limiter in Redis using sorted sets to cap verification attempts per IP, device, and document number.
Files
redis_rate_limiter
Implementa rate limiting con algoritmo de ventana deslizante (sliding window) en Redis para limitar el número de intentos de verificación por IP, dispositivo y número de documento.
When to use
Aplicar en el api_gateway_agent y antifraud_agent como primera línea de defensa contra ataques de fuerza bruta.
Instructions
1. Instalar: pip install redis. 2. Algoritmo sliding window con sorted sets de Redis:
- Key:
ratelimit:{type}:{identifier}(ej.ratelimit:ip:192.168.1.1). - Añadir timestamp actual:
ZADD key {now_ms} {now_ms}. - Eliminar entradas fuera de la ventana:
ZREMRANGEBYSCORE key 0 {now_ms - window_ms}. - Contar:
count = ZCARD key. - Si
count > limit: rechazar. Si no: proceder. - Expirar key:
EXPIRE key {window_seconds}.
3. Límites configurables: IP: 10 intentos/hora; device_id: 5 intentos/día; doc_number: 3 intentos/hora. 4. Devolver headers estándar: X-RateLimit-Limit, X-RateLimit-Remaining, Retry-After.
Notes
- Para alto rendimiento usar scripts Lua en Redis para atomicidad sin round-trips.
- Redis Sentinel garantiza que el rate limiter no sea SPOF.
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