Cursor performance

API Rate Limit Exceeded After Changes

After Cursor refactored your API request code, the application suddenly exceeds rate limits and receives 429 Too Many Requests errors. API calls that were working are now being rate limited.

The refactored code may be making redundant requests or not implementing proper batching.

Error Messages You Might See

429 Too Many Requests Rate limit exceeded Quota exceeded Too many requests from this IP
429 Too Many RequestsRate limit exceededQuota exceededToo many requests from this IP

Common Causes

  1. Removed request caching or memoization
  2. Loop making duplicate API calls instead of batch endpoint
  3. Removed debounce/throttle on frequently triggered requests
  4. Polling interval set too short or continuous
  5. Retrying failed requests too aggressively

How to Fix It

Implement caching: store responses and return within TTL. Use debounce for search/filter: debounce(fetch, 300). Batch requests to single endpoint. Reduce polling interval. Implement exponential backoff for retries: delay = baseDelay * 2^attemptCount.

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Frequently Asked Questions

What's debounce?

Waits for pause in activity before executing. Useful for search: only fetch after user stops typing for 300ms.

How do I cache API responses?

Store in variable with timestamp. Check if data is fresh before fetching. Clear on mutation (POST/PUT/DELETE).

Related Cursor Issues

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