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Next.js is a React framework for deployment-ready applications. It provides file-based routing, enables server-side rendering (SSR) and static site generation (SSG), and includes API route handling within the same project. The framework performs automatic code splitting per route, applies image optimization, and prefetches linked pages. It abstracts build and tooling configuration, hybrid rendering models, incremental static regeneration, and serverless execution environments. Next.js Fundamentals Next.js fundamentals define the core architecture of the framework, including file-based routing, server-side and static rendering methods, API route handling, and built-in performance optimizations for production-grade React applications. File-Based Routing and Page Rendering File-based routing and page rendering in Next.js use the filesystem as the source of route definitions. Each file inside the pages directory maps directly to a URL path. Dynamic routes are defined using bracket syntax (e.g., [id].js). // pages/posts/[id].js export default function Post({ postData }) { return
{postData.title}
; } export async function getServerSideProps(context) { const { id } = context.params; const res = await fetch(`https://api.example.com/posts/${id}`); const postData = await res.json(); return { props: { postData } }; } Explanation: [id].js : Dynamic route segment getServerSideProps : Server-side fetch on every request context.params : Access to dynamic parameters Server-Side Rendering (SSR) and Static Site Generation (SSG) Next.js provides both server-side rendering (SSR) and static site generation (SSG) based on the presence of specific data-fetching functions. getStaticPaths and getStaticProps enable SSG by generating HTML at build time for dynamic routes. / / pages/blog/[slug].js export async function getStaticPaths() { const res = await fetch('https://api.example.com/posts'); const posts = await res.json(); const paths = posts.map((post) => ({ params: { slug: post.slug } })); return { paths, fallback: false }; } export async function getStaticProps({ params }) { const res = await fetch(`https://api.example.com/posts/${params.slug}`); return { props: { post: await res.json() } }; } Explanation: getStaticPaths : Generates static routes at build fallback: false : Limits routes to predefined list getStaticProps : Fetches build-time content API Routes and Image Optimization Next.js defines API routes as serverless functions under the pages/api directory. Each file corresponds to an HTTP endpoint and executes on demand, handling request methods without custom server configuration. The framework includes an image optimization layer that processes images at runtime, performing transformations such as resizing, format conversion, and lazy loading. Example 1: Next.js offers serverless functions and built-in image optimization. // pages/api/upload.js export default function handler(req, res) { if (req.method === 'POST') { res.status(200).json({ status: 'Uploaded' }); } } Explanation: API Routes : Handle requests via Node-compatible logic req/res : HTTP method handlers Example 2: import Image from 'next/image';
Explanation:
: Optimizes images (format, size, lazy-loading) priority : Forces preload of critical visuals Video-Centric Interfaces at Scale Video-centric interfaces at scale in Next.js use server-rendered components, dynamic imports, and route-level code splitting to manage playback performance. API routes handle streaming logic, user events, and analytics across distributed systems. Static generation and incremental rendering reduce load time and support consistent playback across routes. Streaming Workflows and Performance Optimization Streaming workflows and performance optimization in Next.js use server-side rendering, edge functions, and static regeneration. These mechanisms handle low-latency content delivery, controlled revalidation, and efficient runtime execution. Example 1: // pages/videos/[id].js export async function getStaticProps({ params }) { const data = await fetch(`https://cdn.example.com/videos/${params.id}/meta`); return { props: { video: await data.json() }, revalidate: 60 }; } Explanation: revalidate : Enables Incremental Static Regeneration Edge Runtime : Globally distributed serverless rendering Example 2: // components/VideoPlayer.js export default function VideoPlayer({ hlsUrl }) { return (
); } Explanation: SSR + hydration : Combines server-side rendering with HLS manifest CDN-based delivery : Fast content distribution using edge caches Server/Client Rendering Strategies for Video Metadata Server and client rendering strategies for video metadata depend on data stability and user-specific requirements. Rendering mode selection impacts performance, caching behavior, and real-time responsiveness. Example: // pages/discover.js export async function getStaticProps() { const res = await fetch('https://api.example.com/trending'); return { props: { trending: await res.json() }, revalidate: 3600 }; } function Discover({ trending }) { const { data: recommendations } = useSWR('/api/recommendations', fetcher); } Explanation: SSG for static catalog Client fetch for user-specific data Integration with Video APIs and CDNs Integration with video APIs and CDNs involves securing requests and optimizing delivery paths. Middleware enforces access control, while edge functions handle authentication, routing, and caching logic close to the user. Example: // middleware.js import { NextResponse } from 'next/server'; export function middleware(request) { const token = request.cookies.get('auth'); if (!token) return NextResponse.redirect('/login'); return NextResponse.next(); } Explanation: Middleware : Auth gates for API/CDN access Signed URLs : Protect video streams from unauthorized access
Video Hosting
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Video Messaging
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Live
