App Router, performance, SSR, caching & deployment. Written and verified by Dev Pattern Labs engineers.
Learn to build production-ready REST APIs with Next.js Route Handlers. Covers GET, POST, PUT, DELETE methods, NextRequest/NextResponse, query params, CORS, streaming responses, and dynamic segments.
Master Next.js Middleware for authentication guards, redirects, rewrites, and edge logic. Learn matcher config, cookie-based auth, geolocation redirects, and A/B testing patterns.
Learn the fundamental differences between React Server Components and Client Components in Next.js. Understand bundle size impact, data access patterns, composition strategies, and the 'use client' boundary.
Understand all Next.js 15 caching layers: fetch cache options, Route Segment Config, full-route cache, data cache, router cache, and on-demand revalidation with revalidatePath and revalidateTag.
Master Next.js image optimization with the next/image component. Learn layout modes, priority prop, sizes attribute, lazy loading, AVIF/WebP, and how to boost Core Web Vitals.
A comprehensive guide to the Next.js 15 App Router — covering file-system routing, layouts, server components, streaming, and metadata APIs.
