You're building a type-ahead search feature in an Angular application. The user input should trigger API calls, but you want to avoid making unnecessary calls for every keystroke. Which RxJS operators can help optimize this?

  • filter and reduce
  • mergeMap and throttleTime
  • switchMap and debounceTime
  • take and pluck
To optimize the type-ahead search feature, you can use switchMap to cancel previous API calls and only return the latest result, and debounceTime to delay the API call until the user stops typing, avoiding unnecessary calls for every keystroke.
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