A live-search page sometimes shows results for an older query. How would you fix it?
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Model Answer & Deep-Dive Explanation
Responses can arrive out of order, so the last response received may belong to an earlier query. Track a monotonically increasing request identifier and update the UI only when it matches the current request. Abort previous requests where possible, but still guard against stale completions. Debounce input to reduce unnecessary requests, represent loading and error states for the current query, and clear invalid results deliberately. Test with artificial latency that makes earlier requests finish last. Debouncing alone does not solve the ordering problem.
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