What you need to know
Search suggestions can trigger a request for every key press. Debouncing waits for a short quiet period before running the work, so rapid typing results in fewer requests and less server load.
How to apply it
Store and clear a timeout as input changes, choose a small delay based on the experience, and cancel stale requests when a newer query arrives. Keep the input responsive even while results load.
Common mistake to avoid
Do not debounce the visible text input itself. Debounce the expensive request or filtering work, and show a loading or empty state when appropriate.