Next.js Edge Cases
App Router, RSC, caching, and deployment gotchas
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Essential reads to understand the key concepts and patterns.
Next.js Parallel and Intercepting Routes
Modal patterns, @parallel slots, and (.) conventions — the mental model most devs get wrong.
Vercel Skew Protection Deep Dive
How it prevents version mismatches during deployments and why your lazy-loaded chunks sometimes 404.
Next.js 'use cache': Explicit Caching with Automatic Keys
Cache pages, components, and functions with opt-in directive and stale-while-revalidate profiles
RSC Streaming: The Reverse Proxy Gotcha
Your RSC streaming might be silently buffered by Nginx defaults—here's how to fix it
Next.js Build Cache: TypeScript Incremental and Package Imports
Incremental TypeScript, optimizePackageImports, and smart caching—three config changes that compound into 40-60% faster Next.js builds.
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Next.js Middleware Performance: What Runs at the Edge vs What Doesn't
Next.js middleware runs in Edge Runtime with strict limitations. Understanding what triggers Node.js fallback prevents performance regressions and function failures.
next.config.js Optimization Flags
Experimental features that boost production performance—and the ones to avoid
Next.js RSC Serialization Limits
What can (and cannot) cross the server-client boundary in React Server Components
Next.js Route Handlers vs Server Actions
Use Server Actions for mutations called from your React components. Use Route Handlers when external clients need to call your API.
Next.js Server Actions Error Handling Patterns
useActionState, error boundaries, and validation failures all interact in Server Actions. Learn patterns for robust error handling without confusing UX.
Next.js Server Actions Error Handling Patterns
useActionState, error boundaries, and validation failures all interact in Server Actions. Learn patterns for robust error handling without confusing UX.
Vercel Firewall & Rate Limiting
Built-in WAF protection without external services or complex middleware configurations
Next.js Middleware Performance
Middleware runs on every request - make it fast. Learn Edge vs Node runtime trade-offs, header mutation pitfalls, and rewrite rule optimization.
Vercel Cron Jobs Gotchas
Vercel Cron Jobs have strict timeout limits and no execution guarantees. Learn timeout handling, missed execution recovery, and monitoring strategies.
Next.js Cache Components Deep Dive
How the new "use cache" directive fundamentally changes server component performance optimization strategies beyond traditional fetch() caching
Server Components Data Fetching Patterns
Parallel fetching with Promise.all, React.cache for deduplication, and Suspense boundaries to avoid request waterfalls in Server Components.
Partial Prerendering: Streaming + Static Shell
Static shell plus dynamic streaming slots—how Partial Prerendering in Next.js 16 delivers instant initial loads with fresh data.
Vercel Blob Storage: When It Makes Sense (and When It Doesn't)
Average-based billing, 15-minute sampling, and when Vercel Blob beats S3/R2—and when it doesn't.
Neon on Vercel: The Connection Pooling Maze
Edge can't do TCP, serverless exhausts pools—here's when to use pooler endpoint vs @neondatabase/serverless vs raw WebSocket.
Vercel Billing Demystified: Edge Requests, Function Duration, and ISR Costs
How $20/month becomes $200: Edge Requests, Function duration, ISR costs, regional multipliers, and the billing gotchas Vercel doesn't highlight.
ISR Build Time Reduction: From Minutes to Seconds
Stop pre-rendering 500 pages at build time—use ISR to generate on-demand and cut deploys from minutes to seconds.
Vercel Image Build Bottleneck: CDN Migration and OG Generation
Images in /public cost build time even with 'on-demand' optimization. Move to external CDN and generate OG images at runtime for 2-3 minute savings.
Prisma 7: The Rust-Free Future
Wasm engine replaces Rust binary—90% smaller bundles and zero cold starts
Next.js 16: Dynamic by Default, Turbopack Stable, proxy.ts
Explicit caching with 'use cache', Turbopack as default bundler, and proxy.ts for Node.js runtime clarity
Turbopack: Next.js 16 Default Bundler (2-10× Faster)
Rust-powered bundler with incremental compilation, file system caching, and production parity with Webpack
proxy.ts: Node.js Runtime for Next.js Request Interception
Full filesystem and npm package access in middleware—proxy.ts replaces middleware.ts with Node.js runtime
Next.js 16 Incremental Prefetching: Smart Route Preloading
Layout deduplication, viewport-based cancellation, and interaction prioritization reduce redundant requests