I have a new RFC up for route caching in Astro. It's our answer to ISR etc, but it has some important differences that I think would make it really powerful. If you saw my talk at ViteConf you will have seen a preview, but this has a lot more detail on implementation and API. I'd love feedback!
github.com
Route Caching by ascorbic · Pull Request #1245 · withastro/roadmap
Summary A platform-agnostic route caching API for Astro SSR pages that enables declarative cache control using web standards. Examples Basic route caching --- // src/pages/products/[id].astro impor...