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우병수

Tech writer covering AI tools, SaaS, and developer productivity. Sharing real-world tooling experiences from building production apps. Read more at techdigestor.com

Location Seoul, South Korea Joined Joined on  Personal website https://techdigestor.com github website
Patching Linux Kernel CVEs Before the Distro Does: A Sysadmin's Survival Guide

Patching Linux Kernel CVEs Before the Distro Does: A Sysadmin's Survival Guide

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28 min read

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Adaptive Compression in Inverted Indexes: What Actually Happens Inside Lucene, Elasticsearch, and Tantivy

Adaptive Compression in Inverted Indexes: What Actually Happens Inside Lucene, Elasticsearch, and Tantivy

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32 min read
I Used Canny, Productboard, and a Self-Hosted Alternative to Decide What to Build — Here's What Actually Worked

I Used Canny, Productboard, and a Self-Hosted Alternative to Decide What to Build — Here's What Actually Worked

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22 min read
AI-Generated UIs vs. Traditional Design: I Ran Both on the Same Project to Find Out Which One Ships Faster

AI-Generated UIs vs. Traditional Design: I Ran Both on the Same Project to Find Out Which One Ships Faster

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23 min read
Professional Business Email for $0: Cloudflare Email Routing + Gmail SMTP Actually Works

Professional Business Email for $0: Cloudflare Email Routing + Gmail SMTP Actually Works

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21 min read
I Shot a 3D Tour on My iPhone and Published It in 48 Hours — Here's the Exact Stack I Used

I Shot a 3D Tour on My iPhone and Published It in 48 Hours — Here's the Exact Stack I Used

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23 min read
Portabase v1.13: I Replaced My Cron-Based Backup Scripts With This and Haven't Looked Back

Portabase v1.13: I Replaced My Cron-Based Backup Scripts With This and Haven't Looked Back

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22 min read
Docker Is Not the Only Option Anymore: What I Actually Run Containers With in 2026

Docker Is Not the Only Option Anymore: What I Actually Run Containers With in 2026

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25 min read
Self-Hosting GitLab Runners: Stop Paying for Shared Minutes and Run Your Own

Self-Hosting GitLab Runners: Stop Paying for Shared Minutes and Run Your Own

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25 min read
LSM Trees: Why Your Database Writes Are Fast and Your Reads Are Lying to You

LSM Trees: Why Your Database Writes Are Fast and Your Reads Are Lying to You

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30 min read
Your Bash CI Scripts Are a Ticking Time Bomb — Here's What to Use Instead

Your Bash CI Scripts Are a Ticking Time Bomb — Here's What to Use Instead

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28 min read
Animated Gradient Borders in Pure CSS — No JavaScript, No Hacks

Animated Gradient Borders in Pure CSS — No JavaScript, No Hacks

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23 min read
I Built a Personal Glucose Dashboard with React and Firebase — Here's Everything That Tripped Me Up

I Built a Personal Glucose Dashboard with React and Firebase — Here's Everything That Tripped Me Up

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29 min read
I Tried Replacing Bash with Amber-Lang — Here's Where It Actually Helped (and Where I Went Back)

I Tried Replacing Bash with Amber-Lang — Here's Where It Actually Helped (and Where I Went Back)

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23 min read
Our Incident Response Was Taking 40 Minutes — Rust-Based Dashboards Cut It in Half

Our Incident Response Was Taking 40 Minutes — Rust-Based Dashboards Cut It in Half

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22 min read
I Ditched Terraform for These Free IaC Tools — Here's What Actually Held Up in Production

I Ditched Terraform for These Free IaC Tools — Here's What Actually Held Up in Production

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27 min read
How I Cut Our MTTR in Half Using Rust-Based Dashboards for Incident Debugging

How I Cut Our MTTR in Half Using Rust-Based Dashboards for Incident Debugging

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26 min read
Terraform Is Great Until You See the License — Here's What I'm Using Instead

Terraform Is Great Until You See the License — Here's What I'm Using Instead

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27 min read
Scheme vs Haskell for Academic Functional Programming: I TAed Both Courses and Here's What I Learned

Scheme vs Haskell for Academic Functional Programming: I TAed Both Courses and Here's What I Learned

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23 min read
CSS Animated Gradient Borders Without a Single Line of JavaScript

CSS Animated Gradient Borders Without a Single Line of JavaScript

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23 min read
Crossplane + CI/CD: How I Stopped Fighting Kubernetes Config Drift and Actually Shipped Faster

Crossplane + CI/CD: How I Stopped Fighting Kubernetes Config Drift and Actually Shipped Faster

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25 min read
5 AI Tools I Use for SEO When I Can't Touch the Codebase

5 AI Tools I Use for SEO When I Can't Touch the Codebase

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23 min read
Kafka Is Overkill for Most of Us — Here's What I Actually Run in Production Instead

Kafka Is Overkill for Most of Us — Here's What I Actually Run in Production Instead

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28 min read
I Used Amber-Lang and Bash Side-by-Side for 3 Months — Here's When Each One Actually Makes Sense

I Used Amber-Lang and Bash Side-by-Side for 3 Months — Here's When Each One Actually Makes Sense

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25 min read
Building a Personal Glucose Tracking Dashboard with React and Firebase (What I Learned After 3 Months of Daily Use)

Building a Personal Glucose Tracking Dashboard with React and Firebase (What I Learned After 3 Months of Daily Use)

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27 min read
5 Self-Hosted VPNs I've Actually Run in Production (And the One I Ditched After a Week)

5 Self-Hosted VPNs I've Actually Run in Production (And the One I Ditched After a Week)

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31 min read
GitLab CI/CD Is Great — Until You Hit the Free Tier Limits. Here's What I Run Instead.

GitLab CI/CD Is Great — Until You Hit the Free Tier Limits. Here's What I Run Instead.

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30 min read
How to Actually Master Binary Search in Python for Competitive Programming (Without Just Memorizing Templates)

How to Actually Master Binary Search in Python for Competitive Programming (Without Just Memorizing Templates)

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33 min read
I Stopped Pre-Training from Scratch by Using Geometric Deep Learning — Here's the Actual Setup

I Stopped Pre-Training from Scratch by Using Geometric Deep Learning — Here's the Actual Setup

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27 min read
Self-managed Kubernetes vs EKS in 2026: I Ran Both in Production and Here's What Actually Broke

Self-managed Kubernetes vs EKS in 2026: I Ran Both in Production and Here's What Actually Broke

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36 min read
Setting Up Jenkins Pipelines That Actually Work in Production (Not Just on Localhost)

Setting Up Jenkins Pipelines That Actually Work in Production (Not Just on Localhost)

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24 min read
Self-Updating Screenshots in Your Docs: How to Stop Doing It by Hand

Self-Updating Screenshots in Your Docs: How to Stop Doing It by Hand

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24 min read
Building an Operational Tool for Heavy Industry When Your Data Looks Nothing Like the Tutorial Examples

Building an Operational Tool for Heavy Industry When Your Data Looks Nothing Like the Tutorial Examples

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34 min read
Do Workshop Papers at NeurIPS/ICML Actually Help Your PhD Application? Here's What Admissions Committees Actually See

Do Workshop Papers at NeurIPS/ICML Actually Help Your PhD Application? Here's What Admissions Committees Actually See

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22 min read
Zero-Downtime Database Migrations on Kubernetes: How I Stopped Fearing Deploy Day

Zero-Downtime Database Migrations on Kubernetes: How I Stopped Fearing Deploy Day

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31 min read
How the Web Actually Works: A Visual Walkthrough for People Who Are Tired of Vague Explanations

How the Web Actually Works: A Visual Walkthrough for People Who Are Tired of Vague Explanations

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35 min read
Box Memory Optimization in Rust for HPC: What I Learned Allocating 50GB of Simulation Data

Box Memory Optimization in Rust for HPC: What I Learned Allocating 50GB of Simulation Data

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31 min read
React UI Frameworks That Actually Ship Free Figma Files (My Current Shortlist)

React UI Frameworks That Actually Ship Free Figma Files (My Current Shortlist)

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27 min read
Terraform Went BSL — Here's What My Team Actually Switched To (Free Options That Work in 2026)

Terraform Went BSL — Here's What My Team Actually Switched To (Free Options That Work in 2026)

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27 min read
WordPress vs Webflow for Niche E-Commerce in 2026: I Built Both and Here's What Actually Matters

WordPress vs Webflow for Niche E-Commerce in 2026: I Built Both and Here's What Actually Matters

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33 min read
5 Kanban Tools I've Actually Used With Agile Teams (And Why I Keep Switching)

5 Kanban Tools I've Actually Used With Agile Teams (And Why I Keep Switching)

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28 min read
My PostgreSQL Queries Were Destroying Our App at Scale — Here's How I Fixed Them

My PostgreSQL Queries Were Destroying Our App at Scale — Here's How I Fixed Them

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35 min read
Free Shopify Alternatives I Actually Set Up for Real Stores (Not Just Tested in a Sandbox)

Free Shopify Alternatives I Actually Set Up for Real Stores (Not Just Tested in a Sandbox)

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23 min read
Canva vs Visme for Tech Startup Marketing in 2026: I Used Both for 6 Months and Here's What Actually Happened

Canva vs Visme for Tech Startup Marketing in 2026: I Used Both for 6 Months and Here's What Actually Happened

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22 min read
5 JavaScript Testing Frameworks I Actually Use for React — and Which One I Reach for First

5 JavaScript Testing Frameworks I Actually Use for React — and Which One I Reach for First

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23 min read
Deploying Flask on AWS Lambda Without Losing Your Mind: A Setup-to-Production Guide

Deploying Flask on AWS Lambda Without Losing Your Mind: A Setup-to-Production Guide

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24 min read
Free Office Suites for Remote Education Teams: What I Actually Run in 2024

Free Office Suites for Remote Education Teams: What I Actually Run in 2024

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28 min read
Figma vs Adobe XD in 2026: What I Actually Use After Running Design Sprints at Two Startups

Figma vs Adobe XD in 2026: What I Actually Use After Running Design Sprints at Two Startups

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26 min read
The 5 Python Data Science Tools I Actually Have Open Every Day (and Why I Ditched the Others)

The 5 Python Data Science Tools I Actually Have Open Every Day (and Why I Ditched the Others)

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21 min read
Building a REST API in Node.js + Express That Actually Works for Mobile Apps

Building a REST API in Node.js + Express That Actually Works for Mobile Apps

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35 min read
Free Jira Alternatives I Actually Use to Run Agile Sprints at a Startup

Free Jira Alternatives I Actually Use to Run Agile Sprints at a Startup

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26 min read
Zapier vs Make (Integromat): I Ran Both for 6 Months on Real Marketing Workflows — Here's What I Found

Zapier vs Make (Integromat): I Ran Both for 6 Months on Real Marketing Workflows — Here's What I Found

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31 min read
5 AI Chatbots My Team Actually Uses for SaaS Customer Support (And One We Dropped)

5 AI Chatbots My Team Actually Uses for SaaS Customer Support (And One We Dropped)

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30 min read
Django Channels for E-Commerce: From WebSocket Setup to Live Inventory Updates in Production

Django Channels for E-Commerce: From WebSocket Setup to Live Inventory Updates in Production

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34 min read
Free Project Management Tools I Actually Use to Run Volunteer Teams (Asana Alternatives That Don't Require a Budget)

Free Project Management Tools I Actually Use to Run Volunteer Teams (Asana Alternatives That Don't Require a Budget)

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32 min read
Airtable vs Notion for Remote Tech Teams in 2026: I Used Both for 6 Months and Here's What I Actually Recommend

Airtable vs Notion for Remote Tech Teams in 2026: I Used Both for 6 Months and Here's What I Actually Recommend

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35 min read
Low-Code Platforms for Healthcare Apps: What I Actually Use After 3 Years of HIPAA Headaches

Low-Code Platforms for Healthcare Apps: What I Actually Use After 3 Years of HIPAA Headaches

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34 min read
Stop Using Netlify's Git Integration — Here's How to Wire Up GitHub Actions Instead

Stop Using Netlify's Git Integration — Here's How to Wire Up GitHub Actions Instead

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23 min read
Free Project Management Tools for Nonprofits: What I Actually Use to Run Volunteer Teams

Free Project Management Tools for Nonprofits: What I Actually Use to Run Volunteer Teams

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26 min read
Airtable vs Notion for Remote Tech Teams in 2026: I Ran Both for 6 Months and Here's What Actually Happened

Airtable vs Notion for Remote Tech Teams in 2026: I Ran Both for 6 Months and Here's What Actually Happened

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30 min read
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