dns

2 articles

April 14, 2026·Tech

The Global Bridge: Geo-Routing and Anycast

Bring the world closer. Master the logic of Global High Availability. Learn to use 'Geo-Routing' to send users to the closest data center, understand 'Anycast' for ultra-reliable DNS, and learn to automate failover between whole cities using Dynamic DNS.

February 16, 2026·Tech

The Digital Phonebook: /etc/hosts and DNS Resolv

How does Linux find its way on the web? Master the local override file /etc/hosts and the system resolver config /etc/resolv.conf. Learn the order of operations for DNS lookups and how to troubleshoot 'Temporary failure in name resolution'.