A series covering Next.js with App Router, React Server Components, server actions, and the production concerns around them.
Start with Cheatsheet 01 — Next.js Basics .
Cheatsheet: App Router, file-based routing, layouts, Link, navigation.
Cheatsheet: dynamic routes, catch-all, route groups, parallel and intercepted routes.
Cheatsheet: fetch options, ISR, revalidatePath/Tag, parallel fetching.
Cheatsheet: ‘use server’, form actions, useActionState, useFormStatus, errors.
Cheatsheet: middleware basics, matchers, NextResponse, edge runtime.
Cheatsheet: Auth.js v5, sessions, OAuth, custom login, protecting routes.
Cheatsheet: native form actions, useActionState, RHF + server actions.
Cheatsheet: route.ts files, HTTP methods, params, JSON, streaming responses.
Cheatsheet: four caches in Next, when each applies, how to invalidate.
Cheatsheet: next/image props, sizes, priority, font subsets, variable fonts.