Rate Limiting APIs Overview Implement sophisticated rate limiting using sliding window, token bucket, and fixed window counter algorithms with Redis-backed distributed state. Configure per-endpoint, per-user, and per-API-key limits with tiered quotas, burst allowances, and standard response headers that communicate limit status to API consumers. Prerequisites - Redis 6+ for distributed rate limit state (required for multi-instance deployments) - Rate limiting library: (Node.js), (Python/FastAPI), or Bucket4j (Java) - API key or user identification mechanism for per-consumer tracking - Monitor…