next.js

e513488d - docs: clarify serverless runtime behavior for use cache (#92232)

docs: clarify serverless runtime behavior for use cache (#92232) ## Summary - add a prominent note in the App Router Caching guide about runtime behavior on serverless deployments - clarify that `use cache` runtime entries are in-memory and may not persist across requests when requests hit different instances - link directly to `use cache: remote` as the durable/shared runtime caching option Closes #91959 ## Verification - **Manual/source verification** - Confirmed before change there was no mention of serverless runtime cache persistence in `docs/app/getting-started/caching`. - Confirmed after change the new callout appears immediately under the existing “Good to know” note in `docs/01-app/01-getting-started/08-caching.mdx`. - **Evidence screenshots (before/after + verification)** - Before: https://raw.githubusercontent.com/wwenrr/pr-evidence-images/main/next.js/issue-91959/2026-04-01/before.png - After: https://raw.githubusercontent.com/wwenrr/pr-evidence-images/main/next.js/issue-91959/2026-04-01/after.png - Verification keyword check: https://raw.githubusercontent.com/wwenrr/pr-evidence-images/main/next.js/issue-91959/2026-04-01/verification.png ## Notes - Formatting toolchain was not run in this environment because `pnpm` is unavailable on host (`pnpm: not found`). - Change is a minimal docs-only edit (single file, two inserted lines in a callout block). --------- Co-authored-by: wwenrr <wwenrr@users.noreply.github.com> Co-authored-by: Joseph Chamochumbi <joseph.chamochumbi@vercel.com> Co-authored-by: Joseph <sephxd1234@gmail.com>