RFC 9457 in Node.js and TypeScript: Problem Details Error Response Examples
Learn how to use RFC 9457 Problem Details in Node.js and TypeScript with JSON examples, validation errors, exception handling, and cleaner REST API responses.
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Articles, notes, and tutorials on the things I build and learn.
RFC 9457 Problem Details Explained with JSON Examples
Understand RFC 9457 Problem Details for HTTP APIs with simple JSON examples, field explanations, best practices, and common API error response patterns.
REST API Error Response Format: Best Practices, Examples, and Free Checker
Learn the best REST API error response format with JSON examples, HTTP status code guidance, RFC 9457 notes, and a free checker to validate your API error body.
The Ultimate Linux Crontab Guide: Syntax, Examples, and Troubleshooting
Master crontab Linux syntax, examples, cron job every 5 minutes, logs, environment variables, and crontab not working fixes.
Best Claude Skills for Developers: Claude Code Skills Worth Installing, Studying, or Building
A developer-focused guide to the best Claude Skills, Claude Code Skills, GitHub examples, free Skill sources, Reddit picks, and practical workflows worth adding to Claude Code.
How to Create Skills for Claude: A Developer Guide to SKILL.md, Claude Code, and Reusable AI Workflows
Learn how to create Skills for Claude as a developer using SKILL.md, Claude Code, custom folders, GitHub examples, testing workflows, and skill-creator.
20 JavaScript Tricks Every Developer Must Know
Learn 20 practical JavaScript tips and tricks with real code examples for cleaner, faster, and more reliable code.
Docker Tricks in 2026: Faster Builds, AI Tools, Secure Images, and Smarter Dev Workflows
Practical Docker tricks for 2026: Compose Watch, Buildx cache, Docker Scout, Hardened Images, Gordon, MCP Toolkit, and Docker Model Runner.
Building My Own Realtime Database Layer Inspired by Convex
I built a Convex-style realtime layer on top of plain MySQL by tailing the binary log, broadcasting allowlisted table changes over Socket.IO, and consuming them through a single useRealtimeTable React hook. Architecture, code, and trade-offs.
Arch Linux: Setting ACLs for Proper File Permissions
Use setfacl on Arch Linux to give shared directories per-user, per-group permissions that new files inherit automatically — no more chmod -R after every deploy.
What is OpenClaw (formerly Clawd AI, Moltbot)? Install, features, security
OpenClaw (previously Clawd AI, Clawdbot, Moltbot) is a self-hosted personal AI agent that bridges WhatsApp, Telegram, Slack and other channels to an LLM. What it does, how to install it on Node 22+, and the security model you need before you connect real accounts.
Type-Safe Environment Configuration for Next.js: A Complete Guide
Type-safe environment variables in Next.js with Zod — separate serverEnv and clientEnv objects, build-time validation in next.config.ts, and a runtime guard that throws when serverEnv is touched in a client component.
Configure Biome for JavaScript & TypeScript in VS Code
Replace ESLint and Prettier with Biome in a JavaScript, TypeScript, React, or Next.js project — a working biome.json, the VS Code extension settings, format on save, and a `biome ci` step for CI.
Type-Safe Environment Variable Validation in Laravel & PHP
EnvValidator is a Composer package that validates Laravel and standalone PHP .env files at boot — typed rules, presets per project shape, and a `php artisan env:sync` command that keeps .env and .env.example aligned.
Deploy WordPress with Docker, Nginx, MySQL, and Let's Encrypt SSL
Production-ready WordPress on Docker: a docker-compose with MySQL 8 and PHP-FPM, Nginx as the reverse proxy, Let's Encrypt SSL via Certbot, plus Redis caching and a backup strategy.
How to factory-reset Docker on Linux, macOS, and Windows
Step-by-step Docker reset: stop containers, prune images and volumes, wipe /var/lib/docker on Linux, use the Reset to factory defaults button on Desktop, then verify with hello-world.
Set Up SSH for Multiple Git Accounts: GitHub & GitLab Guide
How to set up separate SSH keys for GitHub and GitLab on the same machine — generate keys, configure ~/.ssh/config, and pin per-repo user.name and user.email so commits land on the right account.