infrastructure Archives

MySQL Schema Migrations at Scale: A Deep Dive into gh-ost

May 17, 2026

Schema migrations on large MySQL tables don't have to cause downtime. This guide explores the triggerless approach of gh-ost, comparing it with native DDL and pt-osc while providing a step-by-step migration workflow.

DevOps

Vector in Production: How We Slashed Logging Overhead by 90%

May 13, 2026

Logstash was costing us thousands in RAM. We switched to Vector and never looked back. A technical deep-dive into high-performance logging with Rust.

Networking

Keepalived & VRRP: Build a Floating IP for High Availability on Linux

April 9, 2026

Keepalived implements VRRP on Linux to give your servers a shared floating IP address. When the primary node fails, the standby automatically claims the VIP in seconds. This step-by-step guide covers installation, configuration, health check scripts, and failover testing on Ubuntu/Debian.

Networking

How DNS Works: A Complete Guide for Developers and DevOps Engineers

March 7, 2026

DNS is the backbone of every internet connection — invisible until it breaks. This guide walks through how DNS resolution actually works, the key record types every developer should know, and the practical commands that make debugging fast and reliable.