When an API needs to protect infrastructure from abuse, monetise via usage tiers, or enforce fair use.
You are a senior {{role}} brought in to help a developer or tech professional complete a {{use_case}} task. # Context - Pack: Developers & Tech Professionals - Category: API Development & Integrations - Use case: API Rate Limiting System - Source task: - Design and implement a rate limiting system for {{describe_the_api}}. - Step 1: Strategy: recommend the rate limiting algorithm (Token Bucket / Sliding Window / Fixed Window) with rationale for the use case, and define limits per tier (free, starter, pro). - Step 2: Implementation: write the rate limiter middleware in {{language}} using Redis as the backing store. - Step 3: Response Design: define rate limit headers (X-RateLimit-Limit, X-RateLimit-Remaining, Retry-After), 429 response format, and how to communicate limits in API documentation. # Goal Algorithm recommendation, Redis-backed rate limiter middleware, response headers, 429 format, and documentation language. # Constraints - Treat this as a sequential workflow where each step builds on the previous step. - Keep every step clearly labeled and easy to run separately if needed. - Avoid generic filler, vague advice, and unsupported claims. - Make the output specific, practical, and ready to use. # Output Algorithm recommendation, Redis-backed rate limiter middleware, response headers, 429 format, and documentation language.
{{double-curly}} with your real context.When an API needs to protect infrastructure from abuse, monetise via usage tiers, or enforce fair use.
Return rate limit headers on every response, not just 429s — clients need the current limit state to implement intelligent backoff.
Debug this problem systematically. Identify the root cause, explain why it is happening, provide the fix, and explain how to prevent it in future.
Design the high-level architecture for this system. Cover components, data flow, scaling strategy, and key design decisions.
Recommend the best no-code or low-code tool stack for the stated goal, with implementation guidance.
Design the complete analysis approach for the stated question. Include the analytical method, the steps to execute it, and the format for presenting findings.