Guides
Practical step-by-step tutorials on Windows, server setup, web development, AI integration, and custom software — written by engineers who build production systems every day.
Integrate Stripe Checkout into your Next.js application — create a checkout session, handle webhooks, verify payments, and implement a post-payment success page.
Core Web Vitals (LCP, INP, CLS) directly affect your Google search ranking. This guide covers the most impactful optimizations for Next.js apps to hit green scores across all three metrics.
Add secure authentication to your Next.js 14 App Router application using NextAuth.js v5 — configure providers, protect routes with middleware, and handle sessions server and client side.
Build a production-ready REST API with Node.js and Express — routing, middleware, input validation, error handling, authentication, and database integration.
Beyond git add, commit, and push — the Git commands that actually save you when things go wrong: undoing commits, resolving conflicts, stashing, rebasing, and cleaning up history.
Good commit messages make code reviews faster, debugging easier, and teammates happier. This guide covers the standard commit message format, conventional commits, and the rules that separate professional teams from amateur ones.
Slow database queries are the most common performance bottleneck in web apps. This guide covers EXPLAIN ANALYZE, finding missing indexes, N+1 query problems, and the changes that deliver the biggest performance gains.
MongoDB and PostgreSQL are both excellent databases — but for different use cases. This guide covers the real tradeoffs to help you choose the right one for your project.
S3 is the standard solution for file storage in web apps. This guide covers creating a bucket, setting up IAM permissions, generating presigned URLs for direct browser uploads, and serving files securely.
Send transactional emails from Node.js — contact forms, booking confirmations, password resets — using Nodemailer with SMTP or a dedicated email service like Resend or SendGrid.
Add dark mode to your Next.js app — support system preferences, allow manual toggle, persist the choice, and avoid the flash of incorrect theme on page load.
Add Google Analytics 4 (GA4) to your Next.js app — without breaking performance, respecting GDPR consent, and tracking page views correctly with the App Router.
Rate limiting protects your API from abuse, DoS attacks, and runaway clients. This guide covers in-memory rate limiting for single servers and Redis-backed rate limiting for multiple servers.
SQL and NoSQL are not competing technologies — they solve different problems. This guide cuts through the marketing and gives you a clear decision framework based on your actual use case.
Environment variables keep secrets out of your code. This guide covers .env file conventions, loading variables with dotenv, separating dev and prod configs, and what never to commit to git.
Beyond console.log — professional debugging techniques for Node.js: using the built-in inspector, debugging in VS Code, reading stack traces, and finding memory leaks.
Webhooks let external services notify your app when events happen — Stripe payments, GitHub pushes, Slack messages. This guide covers building a webhook endpoint, verifying signatures, and processing events reliably.
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