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Feb 16 · 6 min read · This article documents a real-world PostgreSQL production incident.All business names, schemas, queries, IPs, and identifiers have been anonymized for confidentiality. 📌 System Overview OS: Ubuntu Server 24.04 LTS Database: PostgreSQL 16.x CPU:...
Join discussionJan 27 · 5 min read · Before you look at iostat, before you blame disks, before you scale hardware — you need one correct mental model. Let’s build it. Why does disk I/O even exist? A program never wants disk. A program wants data. Disk I/O happens only in two situations...
Join discussionDec 28, 2025 · 5 min read · Cloud computing is often presented as something abstract and magical. In reality, it is a set of very deliberate engineering decisions designed to solve scale, availability, and security problems.This article documents my Day 1 and Day 2 learning whi...
Join discussionSep 27, 2025 · 8 min read · Nginx is a high performance web server developed to facilitate the increasing needs of the modern web. It focuses on high performance, high concurrency, and low resource usage. Although it's mostly known as a web server, NGINX at its core is a revers...
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