nextjs-16

Teach image optimization configuration changes in Next.js 16. Use when configuring images, troubleshooting image loading, or migrating image settings.

Teach parallel routes and slot patterns in Next.js 16. Use when implementing parallel routes, working with @slot syntax, or encountering missing default.tsx errors.

Teach async request APIs in Next.js 16 - params, searchParams, cookies(), headers(), draftMode() are now async. Use when migrating from Next.js 15, fixing type errors, or working with request data.

Teach middleware.ts to proxy.ts migration in Next.js 16. Use when migrating middleware, encountering middleware errors, or implementing request proxying.

Review code for Next.js 16 compliance - security patterns, caching, breaking changes. Use when reviewing Next.js code, preparing for migration, or auditing for violations.

Teach Data Access Layer pattern to prevent CVE-2025-29927 middleware authentication bypass. Use when implementing authentication, authorization, protecting routes, or working with server actions that need auth.

Teach server action authentication and security patterns in Next.js 16. Use when implementing server actions, form handlers, or mutations that need authentication.

Teach Cache Components model with 'use cache' directive in Next.js 16. Use when implementing caching, optimizing performance, working with dynamic data, or migrating from Next.js 15 caching patterns.

Teach cache lifecycle APIs in Next.js 16 - cacheLife(), cacheTag(), updateTag(), refresh(), revalidateTag(). Use when managing cache invalidation, setting cache policies, or implementing cache tags.