Developer Guide: Implementing Role-Based Access Control in Go with SQL

A software developer has published a technical walkthrough detailing how to build a role-based access control (RBAC) system using Go and SQL. The tutorial models a blog platform where three user roles — viewer, editor, and admin — are granted distinct permissions over post-related operations. The implementation relies on a relational database schema with linked tables for roles, permissions, users, and posts to manage access rules. The guide covers database migrations, entity setup, authorization logic, and route configuration for a working RBAC system. As a bonus, the tutorial also demonstrates adding an in-memory cache to reduce repeated database lookups when validating user permissions.