Whenever I build my application I see all paths generated statically.

Route (app)                              Size     First Load JS
┌ ○ /_not-found                          887 B          86.8 kB
├ ● /[slug]/[id]                         142 B          86.1 kB
├   ├ /simone/42
├   └ /mario/43
├ ○ /foo                                 3.66 kB         123 kB
├ ○ /bar                                 2.02 kB         126 kB
├ ○ /cippalone                           7.05 kB         127 kB
├ ○ /trippa                              7.31 kB         131 kB
└ ○ /testarancio                         349 B          93.1 kB

But I can visit

• /simone/42
• /mario/43
• /paracarro/666

And I am never getting 404. What really is happening?

I expected that all the pages generated using generateStaticParams() will be saved somewhere BUT that new routes will…

• generate new contents dynamically or…
• return 404 due to the fact some content is not yet generated…

I do not really understand what is happening under the hood. Maybe prebuild pages avoiding building in realtime? Simply make fast the application building content before the requests… I dont really understand the purpose …