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Rate Limiter Middleware with Redis for Express.js

Coding Backend & APIs Advanced 🤖 ChatGPT 👁 9 views

📝 The Prompt

Build a production-ready rate limiting middleware for an Express.js API using Redis. Requirements: (1) Implement sliding window rate limiting (not just fixed window). (2) Support different rate limits per route: /api/auth/* = 5 requests/minute, /api/public/* = 30 requests/minute, /api/premium/* = 100 requests/minute. (3) Identify clients by API key (from header X-API-Key) with IP address fallback. (4) Return proper 429 responses with headers: X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset (Unix timestamp). (5) Include a bypass whitelist for internal service IPs. (6) Add a "burst" allowance: allow 2x the normal limit in a 5-second burst. (7) Write the Redis Lua script for atomic increment-and-check. (8) Include unit tests using Jest and ioredis-mock. (9) Add graceful degradation: if Redis is down, allow requests but log warnings. Provide the complete code with TypeScript types.

🎯 What this prompt does

This AI prompt helps you rate limiter middleware with redis for express.js. Designed for backend & apis workflows in the coding category, it's a advanced-level prompt you can copy directly into ChatGPT to get instant, production-ready results.

Use it when you need a advanced prompt that produces clear, actionable output without wrestling with trial-and-error wording. Just copy, customize, and run.

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🚀 How to use this prompt

  1. Copy the prompt using the 📋 button above.
  2. Open ChatGPT (or Claude, Gemini, Perplexity, or your preferred LLM).
  3. Paste the prompt into a new chat. Add any extra context about your situation if helpful.
  4. Run the prompt and review the AI's response. Most outputs are usable immediately.
  5. Iterate if needed — if the tone, length, or structure isn't quite right, reply with "make it shorter", "use bullet points", or "make it more formal" and the AI will refine it.

💡 Tips for better results

  • Tailor the prompt to your specific context — the more detail you give, the better the output.
  • If the first output isn't quite right, ask the AI to refine, rewrite, or add more detail — iteration is key.
  • For long outputs, ask for a section at a time (e.g. 'start with the introduction only') to keep quality high.
  • Combine this with other coding prompts to build an end-to-end workflow.
  • Save your favorite variations — small wording tweaks often produce noticeably different results.
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✨ What you'll get

When you run this prompt, expect ChatGPT to return:

  • A directly usable backend & apis output tailored to the details you provided
  • Clear structure (headings, bullets, or numbered sections) that you can drop into your workflow
  • Content that matches your specified tone and context
  • Results in under 30 seconds — no manual drafting required

Need a different angle? Just ask follow-up questions. The AI will adjust without you starting over.

🔄 3 variations to try

1

Make it more formal

Add "Use a formal, professional tone suitable for enterprise clients" at the start of the prompt.

2

Ask for multiple options

Append "Give me 5 alternative versions, each with a different angle or approach." after the main instruction.

3

Request structured output

Add "Return the response as a markdown table (or bullet list, or JSON)" so you can paste the result directly into your docs or code.

🏷 Tags

🔎 Find more prompts like this

Browse 80 more coding prompts or search the full library.

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