Hendrik LiebauandGitHub dbbda2fea3 [Cache Components] Fix caching in generateMetadata/generateViewport (#84228) ...

When using `'use cache'` in `generateMetadata` or `generateViewport`,
the caching did not work correctly, because we didn't apply the same
special handling for the `params` and `searchParams` props that we do
for layout and page components. This caused the following issues:

- `generateMetadata`/`generateViewport` for a page without params, or
with static params, yielded cache misses when resuming
- `generateMetadata` for a page/layout with unused params, became
dynamic when prerendering a fallback shell
- `generateMetadata` for a page with used search params, produced a
timeout error during prerendering
- `generateViewport` for a page/layout with unused params, produced a
build error (unless opting into fully dynamic rendering)

Still to be done in a follow-up: Omit unused `params` from cache keys,
and upgrade cache keys when they are used, to avoid unnecessary cache
misses when resuming.

closes NAR-321

2025-10-02 17:33:11 +02:00

..

search-params-caught

…

search-params-unused

…

search-params-used

…

search-params-used-generate-metadata

…

search-params-used-generate-viewport

…

layout.tsx

…