Search Suggestions Can Show Stale Results When Typing Quickly

A frontend exercise shows how a search box can display suggestions that no longer match the current input when the user types faster than responses arrive. Two requests can both succeed, yet an older response may overwrite results for a newer query, even with debouncing in place. The core problem is that a completed request still answers a question the user has already moved past. The recommended fix is an ownership check: each input change increments a version counter, and only the latest version may publish results. Cancellation and debouncing help with efficiency but do not decide which response owns the interface.
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