• [kt cloud TECH UP] Dodging Bankruptcy: Architecting Cost-Effective AI Bot DefenseHow we pivoted from a costly, brute-force Visual Question Answering (VQA) approach to a smart, hybrid ML/Deep Learning "Sword and Shield" architecture for bot deterrence.

  1/30/2026
  
• [kt cloud TECH UP] From Blind Clicking to Tailored UX and MSA TransitionSharing experiences from building a 15,000 concurrent user ticketing platform: redesigning UX for runners and restructuring a Spring Boot project into a multi-module architecture.

  1/25/2026
  
• [kt cloud TECH UP] Do We Really Need Kafka? Unlearning Over-engineering for MVPReflecting on an architectural pivot spurred by kt cloud mentor feedback. Sharing the invaluable lesson of choosing a Redis MVP over a bloated Kafka setup to prioritize business value.

  1/24/2026
  
• Web-based Multi-Agent Reinforcement Learning: The AI Tag Game JourneyA web-based AI tag game side-project inspired by Arc Raiders. Sharing experiences on overcoming the "Lazy Agent" problem and building a multi-stage evolution model using Ray RLlib and PettingZoo.

  1/12/2026
  
• Hoisting in JavaScriptIn JavaScript, it is said that variables and functions are hoisted. But is that really the case? I wanted to check the differences between var, let, and const with actual code.

  9/29/2025
  
• Journey of Knowledge: From Rebellion to EnlightenmentA personal growth story of how I, who was skeptical and rebellious from a young age, came to realize the importance of systematic learning through games and computers. Recognizing the value of knowledge sharing and making a commitment to leave a legacy through blogging.

  7/22/2024
  

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