Fake Speed When Actual Speed Isn't Possible

If you can't make something fast, make it feel fast with optimistic UI, skeletons, or progress indicators.

Incorrect (blank screen during load):

function Page() {
  const { data, isLoading } = useFetch("/api/data");
  if (isLoading) return null;
  return <Content data={data} />;
}

Correct (skeleton during load):

function Page() {
  const { data, isLoading } = useFetch("/api/data");
  if (isLoading) return <Skeleton />;
  return <Content data={data} />;
}