Tag: developer

DNS Records Explained — A, AAAA, CNAME, MX, TXT and More

Learn what DNS records are, how they work, and when to use each type. Covers A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, and CAA records with practical examples.

JWT Tokens Explained — How Authentication Works in Modern Web Apps

Learn how JSON Web Tokens work, what's inside them, how to decode and verify them, and common security pitfalls. Practical guide for developers.

Subnet Masks and CIDR Notation — A Practical Networking Guide

Understand subnet masks, CIDR notation, and IP address ranges. Learn to calculate network addresses, broadcast addresses, and host counts with examples.