Restructuring Jekyll Multilingual Blog URLs and Overhauling Pagination
The -en suffix on English post URLs was bugging me, so I restructured everything to /en/slug/. 140 files changed. The...
Recent Posts
View All Posts →My $50 Credit Vanished in 3 Hours - The Real Cost of Claude Code 1M
The 1M context model is great, but... my $50 free credit disappeared in just 3 hours. The cost per query grows expone...
Escaping Compacting Hell - Claude Code 1M Context Model Review
Claude Code now offers 1M context models. The frustration of constantly watching for compacting messages is finally g...
AI Can Do Everything Now - So What Should We Build?
In an age where AI can build almost anything with a click, what should developers actually work on? A document editin...
Everyone's Talking About OpenClaw, But I Was Already Building the Korean Version
Inspired by OpenClaw, I started building OKAIBOX - an AI agent optimized for the Korean environment. It starts with t...
I Asked AI to Design a 3D Hardware Case - It Took 5 Minutes
I was chatting with AI and asked for a 3D hardware case design. A complete model appeared in under 5 minutes. That wa...
Why I Regret Paying for Annual AI Subscriptions
The AI market moves too fast. I paid for annual subscriptions and within months, better alternatives appeared. Here's...
I Tried Opencode... Turns Out Claude Code Already Does It All
I tried Opencode, a terminal-based AI coding tool. It's good, but Claude Code already had most of the features I needed.
What Services Should You Build in the AI Era - It All Comes Down to Data
AI can code, design, and even create presentations. So what should developers build? After much deliberation, my answ...
Building a Kiosk with Raspberry Pi - More Pitfalls Than Expected
I built a store kiosk using a Raspberry Pi. As a web developer, hardware was a whole new world — and the unexpected p...
Can One Person Really Develop Entire Projects? 200% AI Utilization with CDK + Lambda + Cursor
From the old days of creating separate repositories for each Lambda function to developing entire projects solo with ...
Creating Naver/Kakao OIDC for Firebase? Reality Hits Different
The story of pulling an all-nighter trying to add Naver/Kakao OIDC providers to Firebase
Unity + Firebase Authentication Journey: From Anonymous to Account Linking
Seamless experience for both guests and members! From Firebase Anonymous Auth to Account Linking - real implementatio...
Building a GitHub Pages Tech Blog with AI - Complete Series Guide
From blog creation to multilingual support with Claude Desktop MCP - Complete guide to AI-powered tech blog construct...
Building a GitHub Pages Tech Blog with AI (5) - Completing Jekyll Multilingual Blog with MCP
Final stage of global tech blog completion from Jekyll multilingual system to entire series retrospective with MCP
Building a GitHub Pages Tech Blog with AI (4) - Perfect Implementation of Dark/Light Mode with MCP
Comprehensive guide to automatically building complete theme switching system from CSS variables to Giscus synchroniz...
Building a GitHub Pages Tech Blog with AI (3) - Setting up Giscus Comment System in 5 Minutes with MCP
Complete comment system setup from GitHub Issues configuration to Jekyll integration with single MCP command
Building a GitHub Pages Tech Blog with AI (2) - Complete Automation of SEO-Optimized Tech Posting with MCP
Revolutionary workflow where MCP automatically generates complete tech posts from idea to SEO metadata and images
Complete RAG Guide: Understanding True Data Integration AI through Manufacturing MES Systems
RAG is not just about VectorDB. Discover the true meaning of intelligent platforms that connect VectorDB + RDS + RawD...
AI Development Reality Check: Lessons from Blog Automation
Real stories from building a GitHub Pages blog with AI over the past few days. The light and shadow of AI development
Building a GitHub Pages Tech Blog with AI (1) - Creating Jekyll Blog Locally with Claude Desktop MCP
Revolutionary method to create complete Jekyll blog directly in local filesystem with MCP server without copy/paste
Automating Blog Image Generation with Vertex AI Imagen: From Python Package to MCP Server
Building a complete workflow for automatically generating images for blog posts using AI. From Python package develop...
vertex-ai-imagen: A Simple Python Package for Google Vertex AI Imagen
Introducing a Python package that makes it easier to use Google Vertex AI's Imagen image generation API. Start AI ima...
Easy MCP Installation Using Existing MCPs - Practical Guide for Installing Playwright MCP
Learn practical methods for Claude to automatically install new MCPs using already installed filesystem and desktop-c...
Building a Complete Tech Blog with Claude Desktop + MCP: The Reality of AI Pair Programming
I finally completed the tech blog I'd been postponing for years in just one day with Claude Desktop + MCP Server. Mar...
Getting Started with a Tech Blog Using GitHub Pages
Learn how to create your own tech blog using GitHub Pages and Jekyll with step-by-step instructions.
Python Timestamp Guide - Current Time, Conversion, and Practical Usage
From getting timestamp values in Python to conversion methods and real project applications. Explained with ready-to-...
After 20 Years of Coding, AI Built My Website
For 20 years I typed every line of code myself. Now I tell AI what to build and a website appears. The feelings are.....
How to Get Good Code From AI - It's Not Just About Prompts
Sloppy instructions produce sloppy code. But good prompts alone aren't enough — your project structure matters more t...
Cursor Agent After One Month - Where AI Coding Actually Stands
I used Cursor's AI agent mode in production work for a month. Productivity gains are real, but blind trust will burn ...
Running LLMs Locally With Ollama - It Depends on the Use Case
I wanted to run LLMs locally so I set up Ollama. Surprisingly easy to get running, but the gap with cloud APIs is cle...
API Endpoint Security Without Authentication - How Far Should You Go?
Protecting API endpoints on public sites with no login system. CORS alone isn't enough, but you can't force authentic...
Vector Databases - Do You Actually Need One?
Building AI services, you hear 'you need a vector database' constantly. But do you really? Or can your existing datab...
Creating a Gnuboard Q&A Site Using ChatGPT-4o - Idea Journal
What if we create a Gnuboard-specific Q&A site using the trending generative AI technology? Let me organize my though...
Giving SvelteKit a Try - Am I Framework-Hopping Again?
I barely finished learning Vue.js and another framework caught my eye. SvelteKit claims to be faster without virtual ...
Linux SSH Key Generation - Complete ssh-keygen Guide
From SSH key generation to implementation! A complete guide to building secure server access environment with ssh-key...
Building an Automated Naver Blog Posting System with AWS Lambda + S3 + CloudWatch + SNS
A complete guide to building an automated Naver blog posting system using AWS serverless architecture, solving the co...
Hardware-Based Key Management and Access Control System Design Using Thingplug
IoT security system design based on Thingplug 2.0 platform - Implementing hybrid architecture with AWS Serverless and...
Using ChatGPT for Microservice Architecture Design - An Honest Review
I tried using ChatGPT to help design a microservice architecture. It's no replacement for an architect, but as a rubb...
Linux System Resource Monitoring with htop
Complete guide to real-time Linux system resource monitoring using htop. Efficient methods to analyze CPU, memory, an...
Building Remote Desktop with AWS EC2 - Reality and Future of Cloud Work Environment
Replace a $1,000 PC with AWS EC2 remote desktop for just $50/month! Real cost analysis and setup guide
The Blog Nomad Finally Settles Down
Naver Blog, Tistory, WordPress, GitHub Pages... After years of platform-hopping, I've finally settled. A developer's ...
Adding Specific Files from Ignored Directories in .gitignore
How to configure .gitignore to ignore directories while including specific files. Instantly solvable using ** patterns
Setting up SSH Push with Bitbucket Access Key
Complete setup guide for securely pushing to Bitbucket Private Repository using SSH Key without password authentication
Installing LEMP Stack on Ubuntu 18.04LTS: Complete Guide to Nginx, MariaDB, PHP 7.1
Complete guide to quickly installing LEMP stack on Ubuntu 18.04LTS. Solve everything from one-click scripts to multi-...
Complete Guide to Configuring MariaDB External Access
Step-by-step guide to configure MariaDB for external access by modifying bind-address settings and user permissions.
Setting up nginx Bandwidth Limiting - Complete limit_rate Guide
Complete guide on how to effectively limit bandwidth using limit_rate and limit_rate_after directives in nginx with p...
Complete Guide to GitKraken GitHub Organization Repository Integration
How to solve the issue of organization private repositories not showing in GitKraken through OAuth permission settings
Creating Photoshop Effects with CSS Blend Modes - Complete Guide to background-blend-mode and mix-blend-mode
Learn how to implement Photoshop blending effects using only CSS. Practical applications of background-blend-mode and...
Complete Guide to Gnuboard Hook Usage and Event Types
A comprehensive guide to using Gnuboard hook features for code injection without modifying the bbs folder, covering e...
JavaScript Number Padding with Zeros - Complete Guide to padStart() and Custom Functions
Learn all methods to pad numbers with zeros in JavaScript! From padStart() method to custom functions with ready-to-u...
Complete Guide to MySQL/MariaDB Database Backup and Restore via Console
How to backup and restore MySQL/MariaDB databases via console without GUI tools. Ready-to-use command collection for ...
Complete Guide to Fixing Chrome Yellow Autocomplete Bug - Experimental Features Reset & Korean Input Method Setup
How to completely resolve Chrome autocomplete duplicate input bug with experimental features reset and Korean input m...
Adding Values to HTTP Headers in JavaScript jQuery AJAX Communication
Learn core methods and practical examples for adding authentication tokens to HTTP headers using beforeSend and setRe...
ThemePress Addon Server Architecture - Microservice-Based Scalable Web Platform Design
Designing a scalable addon architecture for 100% free website streaming service. Infinite expansion with microservice...
Configuring Apache to Recognize PHP Code in HTML Files
Learn how to configure Apache web server to execute PHP code in files with .html extension through step-by-step instr...
Critical Mistake to Avoid When Integrating Amazon Cognito with JavaScript
Learn about the most common 'client secret' related error that occurs when integrating Amazon Cognito with JavaScript...
Complete Guide to Linux tar Command - Everything About Compression and Extraction
A comprehensive guide to the most commonly used tar command options and practical examples in Linux. Master compressi...
Fixing Korean Character Encoding Issues After Apache Server Migration
Learn about the causes of Korean character corruption after Apache server migration and how to resolve it through cha...
AWS Lightsail Revisited - It's a Completely Different Service Now
I tried Lightsail years ago and dropped it. Recently went back and it's transformed — affordable, capable, and actual...
Why Developer Communities Died - Or Did They Just Change Shape?
Developer forums used to be buzzing with activity. Now they're quiet. Did the communities die, or did they just evolv...
A jQuery Developer Picks Up Vue.js
After 10+ years of jQuery, I finally started learning Vue.js. Reactive data binding turns out to be a game changer.
Winning a Website Renewal Project Through Competitive Pitch
I won a website renewal project through a competitive pitch. Turns out writing proposals is harder than writing code.
API Gateway Stage-Specific Lambda Functions - A Tale of Debugging Permissions
I wanted API Gateway to call different Lambda functions per stage — dev, staging, prod. The docs made it look simple....
AWS Certified Developer Associate - Exam Review and How I Passed
I got hooked on AWS, studied for three months, and passed the Developer Associate exam. Here's how the prep went and ...
An On-Premise Developer Falls Hard for AWS
After 10+ years of physical servers in data centers, I finally dove into AWS. I thought I was late to the party, but ...
How My Parents' Generation Thinks About Retirement - A Developer Son's Worry
For my parents, owning a house IS their retirement plan. No pension strategy, no investments. And honestly, am I real...
MySQL uuid() in Practice - Stop Exposing Auto Increment PKs in URLs
Using auto_increment PKs directly in URLs gets flagged in every security audit. But replacing all PKs with UUIDs is w...
From On-Premise to Cloud - Confessions of a Developer Who Keeps Postponing Migration
New projects go to the cloud. Old ones stay on IDC servers. I keep telling myself I'll migrate them... but somehow ne...
When Coding Is Fun But Your Hands Won't Move - The Developer Laziness Trap
I still love coding, but my hands just won't move. The architecture is all planned out in my head, yet execution feel...
My Honest Review After Using Docker for Every Project for 2 Years
I switched every project to Docker two years ago. Low barrier to entry, easy deployments... but is it really all upside?