Geoffrey Kim

🧑‍💻 Software Engineer. do no harm. reject prejudice. Building in public while documenting what I learn.

South Korea Joined on May 24, 2023 https://www.linkedin.com/in/jwkim-dev/

Education

Chungnam National University

Pronouns

he/him

Work

Freelancer

TypeScript, JavaScript, Node.js, React, React Native, NestJS, Python, Flutter, Java

NestJS, Backend, DevOps

Study

Open to all opportunities and collaborations - feel free to reach out!

88 posts published

13 comments written

39 tags followed

Geoffrey Kim

Oct 9 '25

Fixing Docker Desktop’s “Unable to find Docker zsh completion in your FPATH” on macOS (Oh My Zsh + Homebrew)

#docker #zsh #macos #ohmyzsh

4 min read

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Geoffrey Kim

Mar 25 '25

Solving SSL Certificate Verification Issues with pip on macOS

#python #macos #pip #ssl

6 min read

Geoffrey Kim

Mar 13 '25

Hardware Entropy: The Hidden Foundation of Modern Cryptography

#cybersecurity #cryptography #randomnumbergeneration #systemsecurity

5 min read

Geoffrey Kim

Feb 15 '25

Optimizing Vue.js Performance with `shallowRef`: An In-Depth Guide

#vue #performance #reactivity #shallowref

4 min read

Geoffrey Kim

Dec 20 '24

Understanding SNI (Server Name Indication) and Modern Encryption Solutions

#cybersecurity #networking #encryption #webdev

2 min read

Geoffrey Kim

Oct 12 '24

A Deep Dive into Cryptographic Random Number Generation: From OpenSSL to Entropy

#cryptography #randomnumbergeneration #cybersecurity #entropymanagement

24 min read

Geoffrey Kim

Jul 24 '24

Enhancing Docker Security: The Power of Non-Root Users

#dockersecurity #containerbestpractices #nonrootusers #devsecops

4 min read

Geoffrey Kim

Jul 24 '24

Nginx Generic Hash Load Balancing: A Comprehensive Guide

#nginx #loadbalancing #webperf #serverarchitecture

3 min read

Geoffrey Kim

Jul 23 '24

Resolving Styled-Components Warning: Unknown Prop 'category' on DOM Element

#react #styledcomponents #typescript #webdev

5 min read

Geoffrey Kim

Jul 23 '24

eBPF: Revolutionizing Linux Kernel Programming

#ebpf #linux #kernel #networking

3 min read

Geoffrey Kim

Jun 18 '24

A Comprehensive Guide to Using Footers in Conventional Commit Messages

#git #versioncontrol #softwareengineering #conventionalcommits

2 min read

Geoffrey Kim

Jun 17 '24

Improving CSS Loading in React Applications: Avoiding `@import` in `createGlobalStyle`

#react #styledcomponents #webperf #cssom

3 min read

Geoffrey Kim

Jun 17 '24

Handling React Warnings: Filtering Props in Styled Components

#react #styledcomponents #performance #codemaintainability

2 min read

Geoffrey Kim

Jun 14 '24

Understanding API Keys, JWT, and Secure Authentication Methods

#authentication #security #jwt #apikeys

3 min read

Geoffrey Kim

Jun 4 '24

How to Ensure Docker Compose Uses Environment Variables from the `.env` File

#docker #environmentvariables #dockercompose #devops

2 min read

Geoffrey Kim

May 31 '24

How to Switch from HTTPS to SSH for GitLab Repositories

#git #ssh #versioncontrol #programmingtips

2 min read

Geoffrey Kim

May 31 '24

Moving Work from the Main Branch to a New Branch in Git

#git #versioncontrol #softwaredevelopment #programmingtips

2 min read

Geoffrey Kim

May 30 '24

Understanding the Structural Differences Between BSD-based Kernels and Linux Kernels

#bsd #kernel #linux #os

4 min read

Geoffrey Kim

May 30 '24

Understanding Docker Containers: Leveraging Linux Kernel's Namespaces and cgroups

#docker #linux #kernel #containerization

3 min read

Geoffrey Kim

May 30 '24

Running Docker on macOS Without Docker Desktop: Alternatives, Limitations, and Best Practices

#docker #macos #virtualization #devops

166

3 min read

Geoffrey Kim

May 29 '24

How to Manage and Migrate Docker Volumes for PostgreSQL

#docker #postgres #datamigration #devops

2 min read

Geoffrey Kim

May 22 '24

Understanding the Use of `flock` in Linux Cron Jobs: Preventing Concurrent Script Execution

#linux #cronjobs #systemadministration #scripting

3 min read

Geoffrey Kim

May 22 '24

Understanding Remote Procedure Calls and Protocol Buffers

#distributedsystems #microservices #grpc #protocolbuffers

3 min read

Geoffrey Kim

May 22 '24

Understanding REST, GraphQL, and gRPC: A Comprehensive Comparison

#webdev #api #microservices #datacommunication

3 min read

Geoffrey Kim

May 20 '24

Building a Modern User Permission Management System with FastAPI, SQLAlchemy 2.0, and MariaDB

#fastapi #sqlalchemy #userauthentication #databasedesign

16 min read

Geoffrey Kim

May 19 '24

Setting Up and Managing Android Emulators on macOS with Homebrew

#android #macos #homebrew #emulation

3 min read

Geoffrey Kim

May 16 '24

Reverting File Changes in Git: A Comprehensive Guide

#git #versioncontrol #devops #programmingtips

3 min read

Geoffrey Kim

May 14 '24

Understanding Webpack and Babel: Key Tools for Modern JavaScript Development

#javascript #webdev #webpack #babel

3 min read

Geoffrey Kim

May 9 '24

Managing SSH Keys Across Multiple Devices: An Enhanced Guide

#sshkeys #gitlab #security #devops

4 min read

Geoffrey Kim

May 9 '24

Resolving Docker Installation Conflicts on macOS

#docker #macos #homebrew #devops

2 min read

Geoffrey Kim

Mar 31 '24

Navigating Feature Deployment with Git: A Guide

#git #versioncontrol #deployment #softwareengineering

4 min read

Geoffrey Kim

Mar 29 '24

Decoding Numerical Representation: Floating-Point vs. Fixed-Point Arithmetic in Computing

#computerscience #programming #softwareengineering #numericcomputing

6 min read

Geoffrey Kim

Mar 29 '24

Resolving Node.js and npm Issues on macOS

#node #npm #yarn #troubleshooting

3 min read

Geoffrey Kim

Mar 29 '24

Understanding Cross-Site Scripting (XSS)

#security #xss #vulnerability #cybersecurity

4 min read

Geoffrey Kim

Mar 28 '24

Understanding and Resolving "fatal: The current branch has no upstream branch" Error in Git

#git #branchmanagement #errorresolution #collaboration

3 min read

Geoffrey Kim

Mar 13 '24

Preventing and Solving Husky Permission Denied Errors in Node.js Projects

#node #git #devops #troubleshooting

3 min read

Geoffrey Kim

Mar 12 '24

Finding the Optimal Bcrypt Rounds for Your Production Environment

#security #bcrypt #performance #javascript

6 min read

Geoffrey Kim

Mar 12 '24

Understanding Bcrypt Rounds: Balancing Security and Performance

#security #bcrypt #hashing #passwordprotection

2 min read

Geoffrey Kim

Mar 7 '24

PostgreSQL vs MySQL: An In-depth Comparison

#postgres #mysql #database #sql

4 min read

Geoffrey Kim

Mar 6 '24

Secure and Efficient Administrator Management in Modern Applications

#security #devops #webdev #bestpractices

2 min read

Geoffrey Kim

Mar 4 '24

Refactoring Legacy Code: A Methodical Approach

#coderefactoring #softwaremaintenance #legacycode #bestpractices

3 min read

Geoffrey Kim

Mar 4 '24

The Art of Writing Clean Code: A Guide for Developers

#cleancode #softwaredevelopment #programmingbestpractices #codequality

4 min read

Geoffrey Kim

Mar 4 '24

Understanding the Differences: MongoDB vs. Relational Databases

#nosql #mongodb #relationaldatabases #databasedesign

2 min read

Geoffrey Kim

Mar 3 '24

Handling Local Dates in JavaScript with `formatDateToLocalISO`

#javascript #datehandling #webdev #timezonemanagement

2 min read

Geoffrey Kim

Mar 3 '24

Managing Time Zones in Linux and MySQL

#linux #mysql #timezonemanagement #serverconfiguration

4 min read

Geoffrey Kim

Mar 3 '24

Managing Logs with PM2 and pm2-logrotate

#node #pm2 #logging #devops

2 min read

Geoffrey Kim

Feb 27 '24

Managing Dependencies with Yarn PnP: To Commit or Not to Commit the `.yarn` Folder?

#dependencymanagement #versioncontrol #softwaredevelopment #yarnpnp

2 min read

Geoffrey Kim

Feb 27 '24

Understanding Async/Await and Promises in JavaScript and TypeScript

#javascript #typescript #asyncawait #promises

3 min read

Geoffrey Kim

Feb 21 '24

Configuring Neovim with `init.lua`: A Comprehensive Guide

#neovim #lua #programming #editor

11 min read

Geoffrey Kim

Feb 21 '24

Embracing Efficiency: Yarn Berry vs. pnpm and the Power of Monorepos

#yarn #pnpm #monorepo #packagemanagement

3 min read

Geoffrey Kim

Feb 20 '24

Resolving Yarn Install and TypeScript Issues in a NestJS Project

#nestjs #typescript #vscode #yarn

2 min read

Geoffrey Kim

Feb 20 '24

Understanding Float vs. Double in C and C++

#programming #c #cpp #datatypes

2 min read

Geoffrey Kim

Feb 20 '24

Managing Next.js and NestJS Applications in Production with PM2

#pm2 #nextjs #nestjs #node

3 min read

Geoffrey Kim

Feb 19 '24

Quick Guide to Leveraging Read the Docs for Your GitHub Projects

#readthedocs #github #documentation #opensource

2 min read

Geoffrey Kim

Feb 18 '24

How to Manage Documentation in a GitHub Repository: A Guide for Junior Developers

#github #documentation #markdown #juniordeveloper

3 min read

Geoffrey Kim

Feb 18 '24

Understanding Synchronization and Asynchronization in Computer Science

#synchronization #asynchronization #concurrency #programminglanguages

3 min read

Geoffrey Kim

Feb 18 '24

Demystifying CQRS for Junior Developers: A Friendly Guide

#cqrs #architecture #performance #scalability

3 min read

Geoffrey Kim

Feb 16 '24

Understanding Wireless Router Encryption: TKIP, AES, and TKIP&AES

#tkip #aes #encryption #wirelesssecurity

2 min read

Geoffrey Kim

Feb 16 '24

Understanding WEP and WPA-PSK in Wireless Router Security

#wirelesssecurity #networksecurity #wpa #cybersecurity

3 min read

Geoffrey Kim

Feb 16 '24

Understanding Passkey Formats: Passphrase and Hex for Wireless Routers

#networksecurity #wifi #cybersecurity #techtips

3 min read

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4 Week Writing Streak

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