The page was served to me with `Last-Modified: Thu, 28 Dec 2023 04:02:49 GMT`, which to me implies either aggressive caching, or that the publishing system acts like a static site generator.
(I am the author of the linked-to article and also the author of the software it's running. Said software also has (on-disk) caching, but that's not why the last-modified is back in December of last year.)