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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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