Create a Golang DNS Resolver: Step-by-Step Guide

This post walks readers through the process of building a DNS Resolver in Golang, from understanding DNS messages and choosing the appropriate language to implementing caching with SQLite. It starts with the basics of DNS and the reasons for choosing Golang, followed by detailed code examples of struct definitions, message conversion, network communication, and response parsing. An additional caching layer is demonstrated using SQLite for efficiency. The author concludes by reflecting on the learning experience and inviting contributions to the project.