How do I explain race conditions in fetching?
Explain that if a user triggers multiple fetches, an earlier response can resolve after a later one and overwrite fresh data. Describe using abort signals to cancel stale requests so only the latest response is used.
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More FAQs in How to Talk About API Issues in a React Frontend Interview
Explain that CORS is a browser security feature, that the request reaches the server but the browser blocks the response without the right headers, and that the fix is a proxy or backend, not disabling CORS in the browser.
Describe how you handle loading, error, and empty states for every fetch, and mention cleanup flags or abort signals to avoid updating state after unmount. This shows you think beyond the happy path.
Mention caching, debouncing search input, and reducing request frequency as ways to stay under limits. This shows you treat the API as a shared resource, not something to hammer.
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