What you need to know
A blog with a known set of articles can provide its slugs to generateStaticParams. That lets the build create each article route with its title and content already in the HTML.
How to apply it
Return one object per valid slug, keep the data source and route lookup aligned, and test an unknown slug so the page returns not found. Add every public article URL to the sitemap too.
Common mistake to avoid
Do not let malformed or duplicate slugs into the data list. Validate the source once, then use the same validated collection for static params, metadata, listings, and sitemap.