What are the different fallback options available in getStaticPaths, and how do they behave differently?

Setting fallback to false means any path not listed results in a 404 page, setting it to true shows a fallback loading state while generating the page on the first request and caching it afterward, and setting it to blocking waits to render the full page on the server before responding, without showing any fallback state at all.

export async function getStaticPaths() {
  return {
    paths: [{ params: { id: '1' } }],
    fallback: 'blocking'
  };
}