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Zod vs Valibot (2026): When Bundle Size Actually Matters for Validation

Zod has the ecosystem. Valibot ships 10kb. Both validate TypeScript at runtime. Real code, real trade-offs, and a clear decision framework for choosing one.

August 11, 202611 min read

Tutorials

Svelte 5 Complete Guide: Runes, Snippets & SvelteKit (2026)

Svelte 5 rewrites reactivity with Runes — $state, $derived, $effect, $props. Learn the new component model, Snippets replacing slots, and building full-stack apps with SvelteKit.

August 4, 202615 min read

Tutorials

NestJS Complete Guide: Enterprise Node.js APIs (2026)

NestJS brings Angular-style structure to Node.js: modules, dependency injection, decorators, guards, and pipes. Learn how to build production-grade APIs with TypeScript and NestJS.

August 3, 202616 min read

Tutorials

Effect-TS Complete Guide: TypeScript That Handles Errors Properly (2026)

Effect-TS brings typed errors, dependency injection, and structured concurrency to TypeScript. Learn when it's worth the learning curve and how to use it in real projects.

July 31, 202616 min read

Tutorials

GitHub Actions Complete Guide: CI/CD for Every Project (2026)

GitHub Actions runs your tests, builds, and deploys automatically on every push. Workflows, secrets, matrix builds, reusable actions, and real-world patterns for Node.js and Docker projects.

July 31, 202615 min read

Tutorials

Vitest Complete Guide: Fast Unit Testing for JavaScript (2026)

Vitest is the fastest unit test runner for Vite projects. Setup, mocking, coverage, component testing, and when to pick it over Jest — practical guide with real code.

July 29, 202614 min read

Tutorials

Expo & React Native Complete Guide for Web Developers (2026)

Build iOS and Android apps with Expo SDK 52 and React Native New Architecture. File routing, NativeWind, TanStack Query, EAS builds — everything a web dev needs to ship mobile.

July 22, 202615 min read

Tutorials

Playwright Complete Guide: E2E Testing in 2026

Master Playwright for end-to-end testing. Page Object Model, visual regression, API testing, CI integration, and real patterns for testing Next.js apps in 2026.

July 22, 202614 min read

Tutorials

SvelteKit 2 Complete Guide: Svelte 5 Runes, Routing, and Form Actions (2026)

Build full-stack apps with SvelteKit 2 and Svelte 5 — runes ($state, $derived, $effect), file-based routing, server load functions, form actions, API endpoints, auth, and deployment.

July 20, 202615 min read

Tutorials

Vite 8 Complete Guide: Rolldown, Oxc, and 10x Faster Builds (2026)

Master Vite 8 — the Rust-powered build tool with Rolldown bundler, Oxc transforms, Full Bundle Mode, and 87% faster production builds. Setup, config, plugins, migration from Vite 6/7.

July 16, 202613 min read

Tutorials

Docker Compose for Local Development: Complete Setup (2026)

One-command local environment with Next.js, PostgreSQL, Redis, and MailHog. Hot reload inside Docker, health checks, volume persistence, and a Makefile that your team will love.

July 9, 202611 min read

Tutorials

Sentry + Next.js: Complete Error Monitoring Guide (2026)

Full Sentry setup for Next.js 15 App Router — error boundaries, source maps, performance monitoring, session replay, server actions instrumentation, and sampling strategies.

July 1, 202612 min read

Tutorials

Core Web Vitals & INP Optimization for React Apps (2026)

INP replaced FID as a Core Web Vital. Here's how to measure it, why React apps fail it, and the fixes — useTransition, scheduler.yield(), virtualization, and more.

June 30, 202612 min read

Tutorials

TypeScript Utility Types: The Complete Guide (2026)

Master TypeScript's built-in utility types. Partial, Pick, Omit, Record, Extract, ReturnType, Awaited and more — with real examples in Next.js and React.

June 19, 202612 min read

Tutorials

AWS S3 File Uploads in Next.js 15: Presigned URLs, Progress & CloudFront (2026)

Production S3 file uploads in Next.js 15 using presigned URLs. Progress tracking, file validation, multiple files, CloudFront CDN, and saving references to Postgres.

June 11, 202614 min read

Tutorials

Inngest + Next.js: The Complete Guide (2026)

Build reliable background jobs and event-driven workflows with Inngest in Next.js 15. Steps, retries, fan-out, cron jobs — real TypeScript code for production.

June 10, 202613 min read

Tutorials

UploadThing in Next.js 2026: The Complete Production File Upload Guide

Complete guide to file uploads in Next.js 15 with UploadThing. File router, Clerk auth middleware, Drizzle metadata storage, drag & drop, and error handling.

June 5, 202613 min read

Tutorials

Secrets Management in Production: Beyond .env Files (2026)

How professional teams manage API keys, database passwords, and secrets in production. Doppler, Vercel env vars, AWS Secrets Manager, rotation, and audit trails.

June 2, 202614 min read

Tutorials

Angular Debugging: DevTools, Change Detection & AI Workflows (2026)

How to debug Angular apps like a senior dev — Angular DevTools, Chrome profiler, change detection issues, and using Claude Code to find bugs faster.

June 1, 202614 min read

The Professional Angular Project Setup in 2026 (Libraries, Architecture & Performance)

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Tutorials

The Professional Angular Project Setup in 2026 (Libraries, Architecture & Performance)

The exact stack, folder structure, libraries and configuration a senior Angular developer uses to start a production project in 2026. No filler.

June 1, 202618 min read

Tutorials

Multi-Tenancy in Next.js: Organizations and Row-Level Security (2026)

How to build real multi-tenancy in a Next.js SaaS — organization-based access control, Postgres Row-Level Security with Drizzle, and tenant isolation that doesn't leak data.

May 29, 202615 min read

Tutorials

CI/CD That Actually Works: GitHub Actions + Preview Deploys (2026)

The GitHub Actions workflow senior engineers use — database migrations first, preview deployments, E2E tests on preview URLs, and production gates.

May 28, 202614 min read

Tutorials

TypeScript Patterns Senior Devs Use That Nobody Teaches (2026)

Branded types, discriminated unions, the Result pattern, exhaustive switches — the TypeScript patterns that actually prevent production bugs.

May 28, 202613 min read

Tutorials

The Production Deployment Checklist Senior Devs Never Skip (2026)

The exact 12-step checklist senior engineers run before every production deploy — migration order, feature flags, health checks, and rollback plans.

May 27, 202612 min read

How Senior Devs Start a Full-Stack Project in 2026

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Tutorials

How Senior Devs Start a Full-Stack Project in 2026

The exact stack, folder structure, tooling, and decisions seniors use to start a full-stack project in 2026 — and what juniors get wrong from day one.

May 26, 202620 min read

Tutorials

Observability from Day 1: Sentry, PostHog, and Structured Logs (2026)

How senior devs set up error tracking, product analytics, and structured logging in Next.js before they need them. SaaS Series #5.

May 26, 202616 min read

Tutorials

Stripe Webhooks and Subscriptions: The Production-Grade Guide (2026)

How to handle Stripe webhooks idempotently, sync subscription state to your DB, and avoid the bugs that break billing at 3 AM. SaaS Series #4.

May 26, 202618 min read

Tutorials

Zero-Downtime Database Migrations in Production (2026)

The expand-contract pattern, safe vs dangerous Drizzle operations, table locks, and how to rename a column without breaking your live app.

May 25, 202618 min read

Tutorials

Rate Limiting in Next.js with Upstash Redis (2026)

Real rate limiting for Next.js API routes and edge middleware — sliding window, per-user, per-IP, and auth endpoint hardening with Upstash Redis.

May 21, 202612 min read

Tutorials

Clerk Authentication in Production: What the Docs Don't Tell You (2026)

Database sync, webhook idempotency, RBAC with custom claims, org switching, and what happens when Clerk goes down. Beyond what the quickstart covers.

May 21, 202616 min read

Tutorials

Background Jobs in Next.js: Inngest vs Trigger.dev vs BullMQ (2026)

Every Next.js SaaS needs background jobs. Compare Inngest, Trigger.dev v3, and BullMQ with real production code — retries, observability, long-running tasks, and when to use each.

May 20, 202615 min read

The Tech Stack I'd Use to Build a SaaS in 2026 (And Exactly Why)

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Tutorials

The Tech Stack I'd Use to Build a SaaS in 2026 (And Exactly Why)

Every architecture decision for a production SaaS — framework, database, ORM, auth, payments, deployment. Opinionated, battle-tested, and explained with real tradeoffs.

May 19, 202616 min read

Tutorials

Zod Complete Guide: Runtime Type Validation in TypeScript (2026)

Master Zod 3 — the TypeScript-first schema validation library. Covers primitives, objects, transformations, refinements, API validation, and integration with tRPC, Hono, and React Hook Form.

May 19, 202613 min read

Tutorials

Astro 5 Complete Guide: Build Faster Content Sites (2026)

Build fast, content-first sites with Astro 5: islands architecture, Content Collections API, SSR, server actions, Tailwind, and deploy to Vercel or Netlify.

May 18, 202614 min read

Tutorials

Turborepo Monorepo Guide: From Zero to Production (2026)

Set up a Turborepo monorepo with shared packages, remote caching, and CI/CD. Covers workspaces, pipelines, TypeScript configs, and GitHub Actions.

May 12, 202612 min read

Tutorials

Biome vs ESLint vs Prettier: Replace Both with One Tool (2026)

Biome replaces ESLint and Prettier in one install, zero config, and runs 10-100x faster. Here's a complete migration guide with real benchmarks and when to stick with ESLint.

May 11, 202611 min read

Tutorials

Docker + Next.js Production Guide (2026)

Deploy Next.js 15 to production with Docker: multi-stage builds, standalone output, health checks, Compose, and real-world best practices that actually work.

May 6, 202613 min read

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Tutorials

Build a WhatsApp AI Chatbot with n8n and Claude API (2026)

Step-by-step tutorial to build a WhatsApp AI chatbot using n8n, Meta's WhatsApp Business Cloud API, and Claude. No code, real automation.

April 27, 202614 min read

Tutorials

Stripe Payments in Next.js 15 (App Router) — Complete Tutorial 2026

Add Stripe payments to a Next.js 15 app from scratch. Checkout, webhooks, subscriptions, customer portal, and middleware for access control.

April 27, 202613 min read

Tutorials

Build a Production REST API with Spring Boot 3 and Java 21 (2026)

Step-by-step guide to a complete CRUD REST API with Spring Boot 3, Java 21, PostgreSQL, validation, exception handling, and Docker. No toy examples.

April 20, 202612 min read

Tutorials

Spring Boot + Claude API Integration Guide (2026)

Complete guide to integrating Claude API into Spring Boot apps — streaming responses, chat history, service patterns, and production-ready error handling.

April 17, 202610 min read

Tutorials

Angular 21: Zone.js Is Gone and Signals Are Now the Default

Angular 21 removes Zone.js by default and makes Signals the primary reactivity model. Here's what changes, what to migrate, and how to update your apps.

April 15, 202611 min read

Tutorials

Tailwind CSS v4 Migration Guide: Everything That Changed

Tailwind CSS v4 is a complete rewrite. CSS-first config, no more tailwind.config.js, new class names, 5-10x faster builds. Here's how to migrate without breaking your project.

April 11, 202610 min read

TypeScript 6.0 Breaking Changes: The Complete Migration Guide

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Tutorials

TypeScript 6.0 Breaking Changes: The Complete Migration Guide

TypeScript 6.0 is out. strict on by default, ES5 gone, classic module resolution removed. Here's every breaking change and exactly how to fix each one.

April 10, 202611 min read

Tutorials

How to Self-Host n8n on a VPS from Scratch (2026)

Stop paying $50/mo for n8n Cloud. Set up your own n8n instance on a $6/mo VPS — domain, Docker, Nginx, SSL, and your first automation. Full step-by-step guide.

April 9, 202612 min read

Tutorials

TypeScript Is Rewriting in Go: 8x Faster and What Developers Need to Know

TypeScript 6.0 ships new defaults that will break your build. Plus: Microsoft is rewriting the compiler in Go for 8x faster performance. Here's everything you need to know.

April 8, 20268 min read