I've built a full blogging system like Carrd / linktree on top of Notion and it's so refreshingly easy.
The only downside is their native JS API is so darn slow — sometimes easily 30s wait, so I have to create another cache layer on top of it with Cloudflare KV, which isn't ideal. How are you dealing with that aspect?
I have not seen 30s wait times but like another comment suggested, I use Redis then incrementally process the requests to Notion. If they fail, I add to a poison queue and retry