Vladan is the founder of Nextcraft and a senior Next.js engineer with 8+ years building production web applications. He specialises in App Router architecture, Core Web Vitals optimisation, and scalable SaaS platforms. Before Nextcraft he led engineering at two venture-backed startups across fintech and edtech.
Written by Vladan
Articles
Rate Limiting in Next.js: Protecting Your API Routes
How to implement production-grade rate limiting in Next.js — with Middleware-level protection, per-user limits, and distributed rate limiting using Upstash Redis.
Engineering · 8 min readNext.js Parallel Routes and Intercepting Routes: A Complete Guide
Parallel routes and intercepting routes are among the most powerful App Router primitives. This guide explains what they do, when to use them, and how to avoid the common pitfalls.
Product · 9 min readHow Much Does It Cost to Build a SaaS Product in 2026?
A realistic breakdown of SaaS development costs — from MVP to production-ready product — with range estimates for agency, freelance, and in-house builds.
Engineering · 8 min readVercel vs Netlify vs AWS Amplify for Next.js in 2026
A practical comparison of the three most common Next.js hosting platforms — Vercel, Netlify, and AWS Amplify — with real cost and capability trade-offs.
Product · 7 min readWhy Next.js Is the Right Framework for Startups in 2026
Next.js has become the default choice for startup engineering teams. Here's the honest case for why — and when you might choose something else.
Engineering · 8 min readHow to Structure a Next.js Project for Scale
A battle-tested folder structure for Next.js App Router projects — from small MVPs to large SaaS applications with multiple teams.
Engineering · 6 min readNext.js Environment Variables: The Complete Guide
How Next.js handles environment variables — server vs client exposure, .env file loading order, runtime vs build-time values, and common mistakes to avoid.
Engineering · 10 min readIntegrating OpenAI with Next.js: Streaming, Edge, and Production Patterns
A production guide to building AI-powered features in Next.js — streaming text generation, edge deployment, rate limiting, and cost control.
Engineering · 12 min readMulti-Tenant Architecture in Next.js: A Production Guide
Three patterns for building multi-tenant SaaS in Next.js — subdomain routing, path-based tenancy, and database-level isolation — with their trade-offs.
Engineering · 11 min readNext.js + Supabase: The Complete Integration Guide for 2026
Everything you need to wire Supabase into a Next.js App Router application — auth, database queries, Row Level Security, and real-time subscriptions.
Engineering · 10 min readBuilding a Stripe Payment Integration in Next.js: The Complete Guide
A production-ready guide to integrating Stripe Checkout, webhooks, and subscription billing into a Next.js App Router application.
Engineering · 8 min readNext.js vs Nuxt 3 in 2026: A Practical Comparison
Next.js and Nuxt 3 are the dominant meta-frameworks for React and Vue respectively. Here's how they compare on architecture, performance, and team fit.
Engineering · 9 min readNext.js vs Remix in 2026: Which Framework Should You Choose?
Both Next.js and Remix are production-grade React meta-frameworks. Here's an honest comparison to help you pick the right one for your project.
Engineering · 7 min readWhy Next.js App Router Is Better for SEO Than Pages Router
The App Router isn't just a new file-system convention — it fundamentally changes how search engines crawl and index your Next.js application.
Engineering · 6 min readServer Components vs Client Components: Making the Right Call
The boundary between Server and Client Components is the most consequential architectural decision you make in a Next.js application. Here's how to draw it correctly.
Engineering · 15 min readThe Architecture of Scale: Engineering High-Performance Next.js Applications
A comprehensive guide to scaling Next.js to millions of users: from App Router optimization and Edge caching to database connection pooling and observability.
Engineering · 8 min readNext.js Caching Explained: All Four Layers
Next.js has four distinct caching mechanisms. Most developers understand one or two of them. Understanding all four is what separates fast apps from truly fast apps.
Design · 14 min readThe Rise of AI-First UI: Designing the Intelligent Interface
How Artificial Intelligence is fundamentally changing the way we design user interfaces—moving from static, deterministic menus to dynamic, intent-based experiences.
Engineering · 9 min readAuthentication in Next.js: NextAuth vs Clerk vs Supabase Auth
Authentication is one of the first decisions you make in a new project and one of the hardest to change later. Here's how the three leading options compare in a production Next.js context.
Engineering · 7 min readCore Web Vitals in 2026: What Actually Moves Your Rankings
Core Web Vitals have evolved significantly since their 2021 introduction. Here's what the current metrics mean, how they're measured, and which ones are actually impacting your search rankings.
Engineering · 8 min readModern State Management in 2026
Why the complex state management libraries of the past are fading, and how we leverage native React 19+ features for cleaner, faster codebases.
Design · 8 min readSaaS Onboarding UX Patterns That Actually Convert
Most SaaS onboarding fails within the first 60 seconds. The patterns that work share a common principle: they make the value obvious before they ask for anything.
SEO · 9 min readTechnical SEO for Developers: What Actually Moves Rankings
Most technical SEO guides are written for marketers. This one is written for developers — the people who can actually implement the fixes that matter.
Design · 6 min readDesign Tokens: The Foundation of a Scalable Design System
Design tokens are the atoms of your design system — single source-of-truth values that make rebrandable, consistent, maintainable UI possible at scale.
Engineering · 7 min readDeploying Next.js to the Edge: Vercel vs Cloudflare Workers
Edge computing moves your code closer to users. But the two dominant platforms have fundamentally different runtime models. Here's what you need to know before choosing.
Strategy · 6 min readThe Product Discovery Trap
Discovery shouldn't take three months. How we use 'Rapid Prototyping' to validate business ideas in weeks, not months.
Design · 7 min readSaaS Dashboard Layout Patterns That Scale
The dashboard is where users spend most of their time in a SaaS product. These patterns separate dashboards that help users accomplish goals from ones that just display data.
Growth · 8 min readEngineering Product-Led Growth: What the Code Actually Looks Like
Product-led growth is a go-to-market strategy, but implementing it well is an engineering challenge. Here's the instrumentation, architecture, and product decisions that make PLG work.
Engineering · 9 min readSecurity-First Engineering
In a world of automated breaches, security can't be an afterthought. This is how we bake security into every layer of our production pipeline.
Engineering · 6 min readDark Mode in Next.js with Tailwind CSS: The Complete Implementation
Dark mode done right means no flash of wrong theme, correct system preference detection, and persistent user preference — all without layout shift. Here's how to build it.
Engineering · 7 min readError Handling in Next.js App Router: A Production Guide
The App Router has a layered error handling system that most developers underuse. Here's how to build resilient Next.js applications that fail gracefully.
Product · 6 min readMVP vs MMP: When to Stop Building and Start Shipping
The MVP is the most misunderstood concept in software. Most teams build way too much before shipping. Some build too little. Here's how to find the right line.
Growth · 12 min readGrowth Engineering: The Technical Side of Product Velocity
Stop guessing what your users want. Learn how we utilize Edge Middleware, behavioral data, and A/B testing to optimize conversions without compromising UX.
Engineering · 7 min readTypeScript Patterns That Make Large Next.js Codebases Maintainable
TypeScript adds correctness guarantees, but only if you use it well. These patterns separate Next.js codebases that scale from ones that become rigid and error-prone.
SEO · 5 min readInternal Linking Strategy for SaaS Content: A Technical Approach
Internal links distribute authority and help search engines understand your site's architecture. Most SaaS companies treat them as an afterthought. Here's how to make them systematic.
Engineering · 7 min readPWA vs Native in 2026
Is the era of the $100k native mobile app over? We compare the latest Progressive Web App capabilities against Native development for modern startups.
Engineering · 8 min readDatabase Access Patterns in Next.js App Router
The App Router changes how you think about data access. Direct database queries in Server Components are now the default pattern — but doing it right requires understanding connection pooling, query optimization, and caching.
Engineering · 8 min readREST vs tRPC vs GraphQL for Next.js: Choosing the Right API Layer
The API layer decision shapes your codebase for years. Each approach has real tradeoffs — here's how to evaluate them for a Next.js project honestly.
Engineering · 6 min readWeb Performance Metrics Every Developer Should Track
Performance metrics tell different stories. Knowing which metric to look at for which problem — and what to do about it — is the difference between useful monitoring and noise.
Engineering · 7 min readComponent Architecture in Large Next.js Applications
As Next.js apps grow, component organization becomes the main source of cognitive overhead. These patterns keep large codebases navigable and modification-safe.
SEO · 6 min readStructured Data for SaaS: Beyond Basic JSON-LD
Most SaaS companies implement Organization schema and call it done. The companies winning rich results in search results go further — here's what they're implementing.
Product · 6 min readThe Real Cost of Technical Debt in SaaS Products
Technical debt isn't a balance sheet item, but it costs real money. Here's how to measure it, communicate it, and manage it without stopping feature delivery.
Engineering · 7 min readMonorepo Architecture for Next.js Projects
When your Next.js project grows into multiple apps sharing code, a monorepo is the natural solution. Here's how to set one up without the tooling overhead derailing you.
Design · 5 min readMicro-animations That Improve UX Without Hurting Performance
The best animations are the ones users don't consciously notice — they just feel right. Here's how to implement motion that enhances rather than distracts.
Engineering · 6 min readNext.js Middleware: Everything You Can Do Before a Request Reaches Your Page
Middleware runs at the edge before your page renders — making it the most powerful and least-understood feature in Next.js. Here's what you can build with it.
Growth · 5 min readBuilding in Public: The Growth Strategy That Compounds
Building in public is not about transparency for its own sake. It's a systematic approach to building an audience before you need one, and a feedback loop that makes better products.
Engineering · 6 min readNext.js Image Optimization: A Complete Guide to next/image
Images are the most common cause of poor Core Web Vitals. next/image solves most image performance problems automatically — if you use it correctly.
Design · 7 min readSaaS Pricing Page Design: Psychology and Patterns That Convert
The pricing page is where the conversion happens. These evidence-based patterns are the difference between a pricing page that's merely informative and one that actively drives sign-ups.
Engineering · 7 min readTesting Next.js Applications: What Actually Needs Tests
100% test coverage is a metric, not a goal. Here's how to write tests that prevent the bugs that actually matter in a Next.js application.
Engineering · 7 min readReact 19 Features Your Next.js Application Should Use
React 19 shipped significant changes to how forms, actions, and async state work. Next.js 16 is built on it — here's what's new and how to use it effectively.
Engineering · 7 min readInternationalization in Next.js: Building for a Global Audience
Internationalization in the App Router works differently than in Pages Router. Here's how to implement locale routing, translations, and locale-aware formatting correctly.