'What does 'no cache': [pagename] in Vercel build log means?

I work on a pretty big headless WP site built with NextJS. It has a lot of posts.

Ever since a couple of days, I'm getting this message by the hundreds on the build log:

info  - Generating static pages (0/573)
no cache:  The page name, not relevant 

I'm not quite sure about the meaning of 'no cache' here. Does it mean that the build is (correctly) detecting a cached page and skipping generating the static pages OR that it's not cached, thus rebuilding it?

As there's a lot of pages, the build is now taking up to 20 minutes 😅



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