DevOps guides

In-depth explanations with real examples. Each guide links to the browser tool that puts the idea into practice.

• How Cron Syntax Works: A Practical Guide

  Learn how the five cron fields, wildcards, ranges and steps work, with real schedules, time zone pitfalls and debugging tips for crontab and Kubernetes.

  Published October 28, 2026

• Kubernetes Requests vs Limits

  Master Kubernetes resource management. Learn how CPU and memory requests and limits work, QoS classes, OOMKilled errors, and sizing best practices.

  Published October 28, 2026

• Subnetting Explained for DevOps Engineers

  Understand IPv4 subnetting, CIDR prefixes and usable hosts step by step, with VPC, Kubernetes and Docker examples and a quick mental-math method.

  Published October 28, 2026