🔍 Introduction You’ve deployed your application successfully, the container or server is running, yet… it’s not accessible via the browser. Frustrating, right? This issue can stem from network misconfigurations, firewall restrictions, incorrect bind...
¿Tu aplicación Java se ha vuelto más lenta que un caracol con resaca? ¿Te ha saludado el temido OutOfMemoryError como quien no quiere la cosa? 😱 ¡Tranquilidad, joven padawan del código! En este artículo vamos a entender cómo funciona la memoria en l...
Recently, I ran into a Docker-related issue that looked deceptively simple — but turned into a valuable deep-dive into container networking, volume persistence, and real-world troubleshooting. Here’s a breakdown of what happened, how I debugged it, a...
개발된 기능을 개발서버에서 QA한 후 모든 사항을 수정하고 이상 없음을 확인한 후 운영서버에 배포했다. 당일 할 일을 끝냈기에 맘편하게 배포를 기다리며 코드를 보고 있는 다를 바 없는 하루였다. 수십 분 후 슬랙에 멘션이 여럿 달리기 시작했다. 현재 웹 사이트가 접속이 안된다는 얘기였다. 순간 식은 땀이 나기 시작했다. 무슨 일이지? 분명 개발서버에서는 이상이 없었는데..? 당장 장애가 발생했으니 문제를 파악해야했다. 하지만 나는 서버를 터뜨린...
Background While working on a legacy integration component, I faced an odd situation. I had a simple .java file to test locally — nothing complex — but it refused to compile without dozens of dependencies. Normally, I would let Maven or Gradle handle...
🌙 It’s 2 AM I’m staring at my screen, a bottle of water by my side, while my S3 bucket keeps throwing "Access Denied" errors like shredded paper. My portfolio was supposed to be live hours ago, but AWS had other plans. I had taken on what seemed ...
The Chrome browser on my Windows 10 has not been working properly for the past few months. Whenever I tried, it wouldn’t open, or it would launch and freeze instantly. I tried a couple of ways to fix it, like removing the cache, reinstalling, etc. I ...
Laptops have become an integral part of our daily lives, serving as essential tools for work, communication, entertainment, and more. But nothing is more frustrating than when your laptop suddenly encounters issues like battery drain, screen flickeri...
Pinging is a basic networking tool used to check whether a device (like a server, website, or another computer) is reachable over a network. It’s often the first step in diagnosing connection issues. How Does It Work? When you ping a device, your com...
Virtualization offers incredible flexibility and efficiency, but sometimes your ESXi virtual machines might not perform as expected. Slowdowns can impact productivity and user experience. Don't fret! This step-by-step guide will walk you through comm...
![[트러블슈팅] 서버를 터뜨린 쟈그마한 함수](https://cdn.hashnode.com/res/hashnode/image/upload/v1748357643167/fc68d237-0bfe-4f79-8e28-15fd98c5710d.png)
