KRIC Station Public Data Hackathon — Hidden Rest Areas

Korea Railroad Industry Information Center’s public-data hackathon. A three-person team built an Android app that surfaces hidden rest spaces inside subway stations, over three weeks.

July 31, 2020 · 3 min read

GDG Korea Android 11 Hackathon — YouTube Together

Entering the GDG Korea Android 11 Hackathon solo, building both server and app in three weeks.

August 29, 2020 · 2 min read

55L(GGS) Startup Story

A startup born from a casual League of Legends habit. From architecture design to desktop apps, a record of two people building a service that grew to 10,000 users over five months.

March 13, 2021 · 3 min read

Session Authentication and JWT

HTTP is stateless. Maintaining user authentication requires storing state somewhere. This post covers the structure, trade-offs, and storage strategies of server-side sessions and client-side JWT tokens.

March 20, 2021 · 4 min read