Rate Limit Exceeded - Too Many API Requests
API returns 429 Too Many Requests errors. Your app is making requests too quickly and hitting the rate limit.
Works initially then fails after rapid user actions.
Error Messages You Might See
Common Causes
- No throttling or debouncing on requests
- Multiple requests sent per keystroke (search, filter)
- Batch operations sending too many parallel requests
- Client-side retry loop without backoff
- Load testing or bot sending many requests
How to Fix It
Debounce requests: useDebounce(searchTerm, 500) for search/filter
Throttle API calls: max 1 request per X ms
Implement exponential backoff for retries: wait 1s, 2s, 4s, 8s...
Queue requests instead of parallel: process one at a time or in batches
Check API docs for rate limit: common is 100-1000 requests/minute
Real developers can help you.
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Mehdi Ben Haddou
- Founder of Chessigma (1M+ users) & many small projects
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Richard McSorley
Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures.
Daniel Vázquez
Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting.
Prakash Prajapati
I’m a Senior Python Developer specializing in building secure, scalable, and highly available systems. I work primarily with Python, Django, FastAPI, Docker, PostgreSQL, and modern AI tooling such as PydanticAI, focusing on clean architecture, strong design principles, and reliable DevOps practices. I enjoy solving complex engineering problems and designing systems that are maintainable, resilient, and built to scale.
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Yovel Cohen
I got a lot of experience in building Long-horizon AI Agents in production, Backend apps that scale to millions of users and frontend knowledge as well.
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Get HelpFrequently Asked Questions
How do I know the rate limit?
Check API docs or response headers: X-RateLimit-Limit, X-RateLimit-Remaining
What's debounce vs throttle?
Debounce: waits for pause then fires (search). Throttle: fires max every X ms (scroll)
Should I implement retry logic?
Yes, with exponential backoff. Don't retry immediately - wait 1s then 2s then 4s