Posts on J2234's log

Useful TUI Tools I Use - Zellij, Yazi, Posting

Sun, 24 May 2026 00:00:00 +0000

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A master is not bound by tools. Margaret Hamilton sent Apollo to the Moon by punching cards, and Linus Torvalds is said to have used uEmacs for Linux development.

But I am not that kind of master. CLI is cool, but if it is not a simple task, I used to think that insisting on CLI while leaving a GUI environment aside was just pretentious.

The Devil Wears Prada 2 Movie Review

Thu, 30 Apr 2026 00:00:00 +0000

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I am not very interested in fashion. Even when I buy clothes, I just pick something from the top rankings on Musinsa, and I always care more about cost-effectiveness than style.

But I enjoyed the first movie so much that when the trailer for The Devil Wears Prada 2 came out, I pinned it to my calendar and watched the movie the day after it opened.

Building My First Home Server with a Mini PC - Setting Up External Access with Cloudflare Tunnel

Sat, 25 Apr 2026 00:00:00 +0000

Intro
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Following up on the previous post, I’m going to configure my home server so I can access it from anywhere.

Purpose

The exact goals of this setup are as follows:

Building My First Home Server with a Mini PC - Installing Ubuntu

Fri, 24 Apr 2026 00:00:00 +0000

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I have used Linux quite a lot so far, but it was all on cloud platforms like AWS or virtual environments like VMware, and I had never physically installed it myself. ~~Actually, I have installed Windows exactly once~~

Recently, I found a used mini PC that I liked, so I plan to turn it into my own home server.

Solved: MacBook Not Detecting External Monitor

Fri, 17 Apr 2026 00:00:00 +0000

Jump straight into the solution

Intro
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They say true tech wizards can solve any problem with a single terminal, but I’m definitely not one of them.

I use an M1 MackBook Pro hooked up to two external monitors.

The biggest monitor is for my IDE / web browsing, the smaller one is for AI tools, and the MacBook’s built-in display is dedicated to terminal.

A Guide to Distributed Transaction Patterns

Wed, 01 Oct 2025 00:00:00 +0000

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2PC (two-phase-commit)
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Usually, when people hear the word “transaction,” they first think of transactions in an RDB.
It is a core concept of databases that ensures all changes are permanently saved or cleanly rolled back if an error occurs.

However, this is only possible within a single database.

Movie Review – Ballerina (John Wick)

Wed, 10 Sep 2025 00:00:00 +0000

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On August 8, 2025, I watched Ballerina at a CGV theater on my day off.

Ballerina is the first spin-off movie from the John Wick universe. While it opened in most countries in June, it was released a bit later in Korea.

This movie had a relatively small audience in Korea.

547. Number of Provinces

Sun, 06 Jul 2025 00:00:00 +0000

Posts on J2234's log

Useful TUI Tools I Use - Zellij, Yazi, Posting

Intro #

The Devil Wears Prada 2 Movie Review

Intro #

Building My First Home Server with a Mini PC - Setting Up External Access with Cloudflare Tunnel

Intro #

Building My First Home Server with a Mini PC - Installing Ubuntu

Intro #

Solved: MacBook Not Detecting External Monitor

Intro #

A Guide to Distributed Transaction Patterns

Intro #

2PC (two-phase-commit) #

Movie Review – Ballerina (John Wick)

Intro #

547. Number of Provinces

IDEA #

Code #

1046. Last Stone Weight

Idea #

Code and Solution #

973. K Closest Points to Origin

Idea #

Code/Solution #

Optimize more #

162. Find Peak Element

IDEA #

SOLUTION/CODE #

34. Find First and Last Position of Element in Sorted Array

IDEA #

code/solution #

35. Search Insert Position

IDEA #

CODE #

238. Product of Array Except Self

IDEA #

Solution #

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70. Climbing Stairs

IDEA #

Code/Solution #

713. Subarray Product Less Than K

IDEA #

Code/Solution #

1700. Number of Students Unable to Eat Lunch

Solution #

649. Dota2 Senate

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2. without deque #

933. Number of Recent Calls

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46. Permutations

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784. Letter Case Permutation

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121. Best Time to Buy and Sell Stock

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406. Queue Reconstruction by Height

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860. Lemonade Change

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1480. Running Sum of 1d Array

1732. Find the Highest Altitude

560. Subarray Sum Equals K

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496. Next Greater Element I

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Solution #

739. Daily Temperatures

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Solution #

84. Largest Rectangle in Histogram

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