Note: This was originally a Next.js 13 tutorial. But since there are no API changes in Next.js 14, it's still completely up-to-date. Learn & understand all important features and caching strategies of the new Next.js app router as fast as possible. You will learn: -the difference between React server components and client components and when to use which -how to fetch, cache, and revalidate data in the new Next.js 13 app router (static rendering, dynamic rendering, and incremental static regeneration) -how to use the new routing system and special files (loading.tsx, error.tsx, not-found.tsx, layout.tsx, route.tsx, and page.tsx) -how to set up API route handlers (GET, POST, etc.) and how to use NextRequest and NextResponse in your backend -how to use useRouter, useSearchParams, and usePathname from next/navigation -how the Next.js pages directory compares to the new app router -the app router equivalents of getStaticProps, getServerSideProps, getStaticPaths, next/Head, and dynamic routes -how to make component libraries like Bootstrap work with server components -how to set up (dynamic) metadata like page titles, descriptions, opengraph images, favicons, and more -how to deploy your project to Vercel In this tutorial, you will build an image gallery app using the Unsplash API. Get the starting code: https://github.com/codinginflow/nextjs-13.4-image-gallery/tree/0-Starting-Point ⭐ Get my full-stack Next.js with Express & TypeScript course: https://codinginflow.com/nextjs ✅ Get my free React Best Practices course: https://www.codinginflow.com/reactbestpractices 💌 Join my newsletter for regular web dev tips: https://codinginflow.com/newsletter 💬 Join our developer community on Discord: https://codinginflow.com/discord 📣 Follow Coding in Flow on social media: Twitter: https://twitter.com/codinginflow Instagram: https://instagram.com/codinginflow TikTok: https://tiktok.com/@codinginflow Facebook: https://facebook.com/codinginflow Timestamps: 0:00 - Intro & prerequisites 16:42 - Project setup & overview 22:13 - Next.js routing system, special files (page, layout, loading, error, not-found), metadata 42:52 - Making component libraries (like Bootstrap) work again 53:35 - Nav bar, next/Link, next/navigation (useRouter, usePathname, useSearchParams) 1:05:51 - Static rendering in server components 1:30:04 - Dynamic rendering in server components 1:38:14 - Incremental static regeneration in server components 1:41:34 - Dynamic route paths, generateStaticParams, dynamicParams 2:00:32 - generateMetadata, fetch deduplication, React cache, notFound 2:13:47 - Client-side fetching 2:44:46 - Deployment (Vercel) & social media preview (og:image, favicon)