📰 Dev.to · HK Lee

A step-by-step production guide to building a private, local AI coding assistant that understands your entire codebase. Covers Ollama setup, embedding generatio

Database branching gives every PR its own isolated database with production data. This deep dive covers how copy-on-write storage works, compares Neon vs Planet

AI coding agents generate clean-looking code that passes tests but fails in production. This deep dive covers the 7 most dangerous hidden bug patterns — cache s

A complete engineering guide to Specification-Driven Development (SDD) — the structured methodology that replaces vibe coding with spec files, test-first workfl

A production-ready engineering guide to implementing DPoP (Demonstrating Proof-of-Possession) per RFC 9449. Covers why bearer tokens are broken, how cryptograph

A practical engineering guide to integrating AI-powered code review into your development workflow. Covers tool comparison (CodeRabbit, Qodo, Ellipsis), buildin

A practical engineering guide to building reliable AI agents. Covers circuit breakers, retry-classify loops, guardrails, kill switches, cost budgets, observabil

A pragmatic deep dive into when htmx replaces React, when it can't, and how to decide between server-driven hypermedia and client-side SPAs in 2026. Includes ar

Un análisis profundo de la propuesta TC39 Signals y la revolución de reactividad que está barriendo Angular, Solid, Svelte, Vue y Qwik. Entiende cómo funcionan

OAuth 2.1 removes the Implicit Grant and ROPC flows, mandates PKCE for all clients, and enforces strict redirect URI matching. This guide covers every breaking

Traditional keyword search fails when users search with intent, not exact terms. Learn how to build production-ready AI search with vector embeddings, hybrid se

A comprehensive deep dive into TypeScript generics. Learn how they work under the hood, master advanced patterns like conditional types and mapped types, and se

Everything you need to know about upgrading from Zod 3 to Zod 4. Covers all breaking changes, the new unified error API, @zod/mini, JSON Schema conversion, meta

A deep dive into memory architecture patterns for production AI agents. Learn hierarchical memory, sliding window, summarization chains, GraphRAG, and how to ch

Your queries are slow and you don't know why. This guide walks you through EXPLAIN ANALYZE output, index strategies that actually work, the N+1 problem and how

A practical deep dive into reducing LLM API spending with semantic caching, intelligent model routing, prompt compression, and batch processing. Real code examp

An unbiased, deep-dive comparison of OpenAI Codex and Claude Code for real-world software development. We cover architecture, agentic workflows, code quality, p

An honest, deep-dive comparison of Docker and Podman in 2026. Covers rootless containers, Kubernetes alignment, Docker Desktop licensing, CI/CD pipelines, and r

An in-depth, unbiased comparison of Supabase and Firebase in 2026. Covers database architecture, authentication, pricing traps, real-time sync, edge functions,

Node.js can now run TypeScript files directly without tsc, ts-node, or any build step. Learn how type stripping works, what --experimental-strip-types does unde

Still debating REST vs GraphQL? The landscape has shifted. A no-BS breakdown of REST, GraphQL, tRPC, and gRPC — with real benchmarks, architecture trade-offs, a

Your LLM returns beautiful prose when you need a JSON object. Sound familiar? A deep dive into structured output across OpenAI, Anthropic, and Gemini — with Pyd

Stop asking 'which is better.' The real question is which one will cost you less pain. A deep dive into architecture trade-offs, real cost breakdowns, the rise

Your bundler, linter, transpiler, and minifier are all being rewritten in Rust. Here's what's happening, why it matters, and how to migrate before you're left b