nextjs-cache-architecture
Use this skill whenever the user wants to design or implement caching in a Next.js 16+ App Router project — setting up the "use cache" directive, building a cache tag registry, wiring mutations to invalidation utilities, structuring Suspense boundaries for partial prerendering, handling personalized content near cache boundaries, choosing cacheLife profiles, calling cacheTag / updateTag / revalidateTag correctly, migrating from unstable_cache, or debugging stale or incorrectly fresh data. Trigge
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About nextjs-cache-architecture
The nextjs-cache-architecture skill provides comprehensive guidance for implementing production-grade caching in Next.js 16+ App Router projects. It addresses the common problem of ad-hoc cache implementation by establishing a structured architecture from day one, focusing on three core components: a centralized tag registry, revalidation utilities, and proper cache placement on data-fetching functions rather than page components. This approach prevents cache inconsistency issues that arise when cache invalidation logic is scattered throughout the codebase.
The skill covers the complete caching lifecycle including setting up the "use cache" directive, building a cache tag registry for centralized tag management, wiring mutations to invalidation utilities, structuring Suspense boundaries for partial prerendering, and handling personalized content near cache boundaries. It provides guidance on choosing appropriate cacheLife profiles, correctly implementing cacheTag, updateTag, and revalidateTag functions, and debugging stale or incorrectly fresh data. The skill includes drop-in templates for the tag registry, revalidation utilities, and Suspense components that can be customized to match project-specific naming conventions.
This skill is designed for developers building Next.js applications who need to implement caching correctly from the start or refactor existing cache implementations. It's particularly valuable when migrating from unstable_cache, working with personalized content, or scaling a codebase where improper cache invalidation could lead to data consistency issues. The skill triggers when users describe their domain model and ask about proper caching strategies, making it accessible even to those unfamiliar with Next.js caching specifics.
FAQ
What version of Next.js does this skill support?
This skill is designed for Next.js 16 and later versions that support the App Router and the "use cache" directive. It requires enabling the cacheComponents flag in next.config.ts.
Can I use this skill to migrate from unstable_cache?
Yes, the skill includes specific guidance for migrating from unstable_cache through the references/migration-from-unstable-cache.md reference document, which provides migration patterns and strategies.
How does this skill handle personalized content that varies by user?
The skill includes dedicated guidance in references/personalized-content.md for caching content that depends on logged-in users, addressing the challenge of maintaining cache efficiency while respecting user-specific data.
What are the three core components of the caching architecture?
The three load-bearing pieces are: (1) a centralized tag registry in lib/cache/tags.ts with no raw tag strings elsewhere, (2) revalidation utilities in lib/cache/revalidate.ts where all updateTag calls live, and (3) proper cache placement on data-fetching functions rather than page components.
Does this skill provide ready-to-use code templates?
Yes, the skill includes drop-in templates in the assets directory for tags.ts, revalidate.ts, and SuspenseOnSearchParams.tsx components. These templates use placeholders that should be renamed to match your project's domain model.
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11 filesInstall nextjs-cache-architecture
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