Shelner

I'm a full-stack web engineer. This blog is a personal memo where I write what I learn, the problems I face, and the solutions I want to remember. I'm still a beginner in English.

Japan Joined on Mar 25, 2025

Work

Web Engineer

Shelner

Jan 14

System Architecture Design Example using Mermaid

#mermaid #design

1 min read

Shelner

Jan 4

Password Generator using Go and K3s

#go #k3s

1 min read

Shelner

Jan 3

K3s server setup guide using Ubuntu22

#k3s #kubernetes #ubuntu

3 min read

Shelner

Dec 31 '25

Terms for Web Technologies 1

#web

2 min read

Shelner

Dec 30 '25

How to deploy Next.js App to VPS (Ubuntu server) with GitHub-Actions

#ubuntu #nextjs #deploy #githubactions

3 min read

Shelner

Dec 29 '25

Gitflow and GitHub-flow

#git #github

1 min read

Shelner

Nov 3 '25

[UI Design] Markdown Viewer

#design

1 min read

Shelner

Nov 2 '25

Reverse Integer

#dsa #java #typescript

1 min read

Shelner

Nov 1 '25

Factorial Trailing Zeros

#java #dsa #leetcode #typescript

1 min read

Shelner

Nov 1 '25

Reverse String with Stack or ArrayList

#dsa #java

1 min read

Shelner

Nov 1 '25

Palindrome Number

#dsa #leetcode #java #typescript

1 min read

Shelner

Nov 1 '25

Event Loop in JavaScript

#eventloop #javascript

1 min read

Shelner

Oct 30 '25

Single Number

#dsa #java

1 min read

Shelner

Oct 29 '25

FizzBuzz

#dsa #java

1 min read

Shelner

Oct 27 '25

How to setup Jest + RTL on Vite & React

#react #jest #reacttestinglibrary

1 min read

Shelner

Oct 25 '25

Java Record basics

#java

1 min read

Shelner

Oct 5 '25

Create a simple TCP server with Node.js

#node #typescript

1 min read

Shelner

Jul 28 '25

Java basic knowledge

#java

2 min read

Shelner

Jun 30 '25

Create simple swiper component

#nextjs

2 min read

Shelner

Jun 27 '25

What is a Regular Expression?

#regex

1 min read

Shelner

Jun 19 '25

[JavaQ] Easy True or False Questions

#java #question

2 min read

Shelner

Jun 19 '25

[JavaQ] 1. Easy Java Questions

#java #interview

2 min read

Shelner

Jun 18 '25

Super Simple Blockchain using Java

#java

2 min read

Shelner

Jun 16 '25

A class to calculate the amount of money needed to live to dividends using TypeScript and Java

#typescript #java

1 min read

Shelner

Jun 15 '25

How to get Bitcoin data and save it in MySQL using Spring Boot

#bitcoin #mysql #springboot

4 min read

Shelner

Jun 14 '25

What is the `DECIMAL` type in MySQL?

#mysql

1 min read

Shelner

Jun 14 '25

Recommend Forlder structure for Spring Boot

#springboot

1 min read

Shelner

Jun 8 '25

Step-by-step Guid: Google Authentication with Spring Boot

#springboot #oauth #google

2 min read

Shelner

Jun 7 '25

[Backend Desing] Task Management Web application

#backend #design #designsystem

5 min read

Shelner

Jun 6 '25

What is the difference between schema and blueprint?

#schema #blueprint #graphql

2 min read

Shelner

Jun 6 '25

GraphQL - Tutorial

#graphql #tutorial

2 min read

Shelner

Jun 6 '25

DDD (Domain-Driven Design) tutorial

#ddd

2 min read

Shelner

Jun 5 '25

What is `CONSTRAINT` Keyword in MySQL

#mysql #tutorial

2 min read

Shelner

Jun 1 '25

What are these folders and files in Java Project in IntelliJ IDEA?

#java #intellij

1 min read

Shelner

May 26 '25

Go basics

#go #basic

1 min read

Shelner

May 25 '25

"Record" utility type in TypeScript

#typescript #record

1 min read

Shelner

May 18 '25

`pnpm` setting steps

#npm #javascript #web

1 min read

Shelner

May 8 '25

AWS architecture

#aws #architecture

1 min read

Shelner

May 3 '25

How to create a simple library using typescript

#webdev #javascript #typescript #npm

1 min read

Shelner

Apr 26 '25

[TOC]Build a full-stack simple blog application

#webdev #javascript #programming

1 min read

Shelner

Apr 12 '25

Site Editor rough Design

#webdev #programming #javascript

1 min read

Writing Debut