API Gateway Architecture: Redis Rate Limiting, Caching & WAF
By Academic Curriculum & Technical Education Board•
Curriculum Core Competency
Securing API surfaces: sliding-window rate limiting with Redis Lua scripts, edge reverse proxy caching with Nginx, and Web Application Firewall (WAF) policies.
The API Gateway provides the primary defensive boundary and traffic routing layer for multi-tenant backend ecosystems.
1. Gateway Security Capabilities
Sliding-Window Rate Limiting: Atomic Redis Lua scripts enforce burst and sustained request rate limits per client IP or API key.
Edge Micro-Caching: Short-lived proxy caching (e.g. 5-second cache) absorbs traffic spikes for read-heavy public endpoints.
WAF Inspection: Blocking SQL injection, cross-site scripting (XSS), and malicious scanner payloads before reaching backend worker processes.
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Academic Curriculum & Technical Education Board
Our faculty comprises Principal Cloud Solutions Architects, Staff Software Engineers, and SRE Leaders with extensive distributed systems and technical education experience across high-scale enterprise environments.
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