Insights & Guides

Web Development

Web Development — Practical guides on web development, Flutter, n8n automation, and digital strategy. Real project insights from a senior-only agency.

44 articles

·15 min read

Implementing Stripe Subscriptions in Next.js: Billing Portal, Webhooks, and Entitlements

A production-ready guide to Next.js Stripe subscriptions: plans and trials, Billing Portal, webhook verification, idempotent processing, entitlement mapping, and Stripe CLI testing.

Next.jsStripeSubscriptionsPaymentsWebhooksSaaS
Adrijan OmićevićRead Article
·15 min read

Next.js Caching Strategies Explained: SSR, SSG, ISR, Route Cache, and SWR

A practical guide to Next.js caching strategies in the App Router era — how SSR, SSG, ISR, the Route Cache, Data Cache, and SWR fit together, with decision tables, code examples, and common pitfalls like stale auth and tenant data.

Next.jsCachingPerformanceReactApp RouterSWR
Adrijan OmićevićRead Article
·16 min read

Next.js Multitenant SaaS Architecture: Tenancy Models, Routing, Auth, and Data Isolation (2026 Guide)

A practical guide to Next.js multitenant SaaS architecture: tenancy models, tenant-aware routing with App Router and middleware, auth patterns, and hardening data isolation to prevent leaks.

Next.jsSaaSMulti-tenancyApp RouterSecurityArchitecturePostgreSQLAuth
Adrijan OmićevićRead Article
·15 min read

Web Application Observability: A Practical Guide to Logging, Metrics, and Tracing for React and Next.js

An end-to-end, production-ready observability setup for React and Next.js: error tracking, performance monitoring, structured logs, tracing, dashboards, and alerts that catch real issues.

ObservabilityNext.jsReactLoggingMetricsTracingSREDevOps
Adrijan OmićevićRead Article
·13 min read

React Component Architecture for Scale: Patterns for a Maintainable Design System

A pragmatic React component architecture for large React and Next.js codebases: composition, compound and polymorphic components, theming, folder conventions, anti-patterns, and a refactoring playbook your team can follow.

ReactNext.jsDesign SystemsArchitectureTypeScriptUI Engineering
Adrijan OmićevićRead Article
·16 min read

Next.js Authentication in 2026: NextAuth vs Clerk vs Supabase (What We Use for Client Projects)

A practical comparison of Next.js authentication options in 2026 — NextAuth, Clerk, and Supabase — across UX, security, cost, setup time, and enterprise requirements, with decision matrices for SaaS, internal tools, and B2B portals.

Next.js authenticationNext.jsApp RouterNextAuthClerkSupabaseSecuritySaaS
Adrijan OmićevićRead Article
·14 min read

Next.js App Router Migration Checklist (From Pages Router) + Common Pitfalls

A practical, step-by-step Next.js App Router migration plan from Pages Router, including a checklist for routing, data fetching, SEO metadata, deployment, and a troubleshooting guide for common pitfalls.

Next.jsReactApp RouterMigrationSEODeploymentPerformance
Adrijan OmićevićRead Article
·13 min read

Tailwind CSS Best Practices: Building Maintainable UIs (Production Patterns for 2026)

A production-focused guide to tailwind CSS best practices: component patterns, custom config, dark mode, responsive strategy, and copy‑pasteable examples for maintainable UIs.

Tailwind CSSCSSFrontendNext.jsDesign SystemsBest Practices
Adrijan OmićevićRead Article
·19 min read

Web Application Security Checklist for 2026 (Next.js + OWASP Top 10)

A practical web application security checklist for 2026, focused on Next.js: OWASP Top 10 coverage, authentication, input validation, CSP, HTTPS, and production-ready headers.

SecurityNext.jsReactOWASPWeb DevelopmentChecklist
Adrijan OmićevićRead Article
·15 min read

React Server Components (RSC): What They Are and How to Use Them in Next.js App Router

A practical 2026 guide to React Server Components: what they are, why they matter, and how to use server vs client components correctly in Next.js App Router with copy-pasteable examples.

ReactNext.jsReact Server ComponentsPerformanceWeb DevelopmentGuide
Adrijan OmićevićRead Article
·12 min read

Technical SEO for Developers (Next.js): Everything You Need to Know in 2026

A practical, developer-focused guide to technical SEO in Next.js: meta tags, structured data, Core Web Vitals, sitemaps, robots.txt, canonical URLs, and production-ready examples.

SEONext.jsTechnical SEOWeb PerformanceJavaScript
Adrijan OmićevićRead Article
·15 min read

API Integration Guide: Best Practices for 2026

A practical API integration guide for 2026: REST vs GraphQL, authentication, error handling, retries, rate limiting, and production-ready Next.js API route examples.

APIIntegrationNext.jsRESTGraphQLSecurityWeb Development
Adrijan OmićevićRead Article