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What does `use cache` unlock in Next.js 15?

Q: What does `use cache` unlock in Next.js 15?

`'use cache'` marks an async function or component as cacheable — with `cacheLife` and `cacheTag` you control TTL and on-demand revalidation without wrapping fetch. 'use cache' directive → cacheLife → cacheTag + revalidateTag 'use cache' top of fn/component makes result cacheable replaces fetch cache <rect x="3

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Understand the problem

The new per-function cache directive that replaces manual unstable_cache and automatic fetch caching.

use-cachecachingnextjs-15

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Study the solution

'use cache' marks an async function or component as cacheable — with cacheLife and cacheTag you control TTL and on-demand revalidation without wrapping fetch.

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