Articles, guides, and insights — crafted for the curious developer
Every app is adding AI. This guide teaches you how to build production AI features using LangChain, vector databases, RAG (Retrieval-Augmented Generation), and the Vercel AI SDK — the skills hiring managers want most in 2026.
Next.js 15 App Router is the production standard for React in 2026. This masterclass covers file-based routing, layouts, streaming, parallel routes, and every pattern you need for production apps.
AI coding assistants are the biggest productivity shift since Stack Overflow. This guide covers GitHub Copilot, Cursor, prompt engineering patterns for code, AI-powered code review, and how to use AI without becoming dependent on it.
Closures are the single most tested JavaScript concept in senior-level interviews. This guide covers everything from lexical scope mechanics to V8 optimization, real-world patterns, and the 10 interview questions you must know.
React 19 fundamentally changes how we build web apps. This guide covers Server Components, the use() hook, Server Actions, streaming SSR, and Partial Prerendering — with production patterns and interview prep.
Node.js 22 brings native fetch, a built-in test runner, and enhanced ES module support. Pair it with Fastify 5 for a production API that is fast, type-safe, and battle-tested.
TypeScript generics are the bridge between writing code and writing reusable, type-safe libraries. This guide covers everything from basic constraints to advanced patterns like conditional types, template literals, and const type parameters in TS 5.x.
Google uses Core Web Vitals as a ranking signal. In 2026, INP replaced FID, View Transitions API is stable, and Speculation Rules enable instant navigation. This guide covers every optimization that actually matters.
Passwords are dying. Passkeys, WebAuthn, and OAuth 2.1 with PKCE are the new standard. This guide covers every authentication pattern you need for production apps and technical interviews in 2026.
Microservices are the backbone of Netflix, Uber, and Amazon. But most teams implement them wrong. This guide covers the patterns that actually work in production — event sourcing, CQRS, Saga, and when NOT to use microservices.
Your app is only as fast as your database. PostgreSQL 17 brings incremental sorting, parallel query improvements, and enhanced JSONB. This guide teaches you how to identify and fix performance bottlenecks at every level.
Vector databases are the backbone of every AI application. This guide covers pgvector, Pinecone, HNSW indexing, chunking strategies, and building production-grade semantic search from scratch.
Redis is the swiss-army knife of backend development. This guide covers every caching pattern, pub/sub for real-time features, Redis Stack for JSON and search, and the production configuration that prevents data loss.
Database migrations are the riskiest part of any deployment. One bad migration can take down your entire application. This guide teaches the expand-contract pattern, safe column operations, and zero-downtime strategies used by companies like Shopify and Stripe.
Docker 27 with BuildKit is the standard for modern development. This guide covers efficient Dockerfiles, multi-stage builds, security scanning, Compose v2, and the production patterns that separate hobby projects from professional deployments.
GitHub Actions is the most popular CI/CD platform. This guide covers reusable workflows, OIDC for keyless cloud auth, matrix strategies for multi-version testing, caching, and the production patterns used by top open-source projects.
Kubernetes is the operating system of the cloud. This guide covers Pod fundamentals, Deployments, Services, Gateway API, auto-scaling (HPA v2), and the production patterns you need for system design interviews.
Edge computing runs your code on 300+ global servers, responding to users in under 50ms worldwide. This guide covers Cloudflare Workers, Vercel Edge Functions, Deno Deploy, and the architectural patterns for choosing between edge, serverless, and containers.
Most unit tests are worthless — they test implementation details and break on every refactor. This guide teaches you how to write tests that catch actual bugs using Vitest 3, Testing Library, and the testing patterns used at top tech companies.
Playwright is the most powerful browser testing framework. This guide covers its auto-waiting engine, component testing, visual regression, API testing, and CI integration — the complete testing toolkit for modern web apps.