https://najib.id/en/tags/refactoring/ Recent content in Refactoring on Blogfolio Najib Hugo en-US This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Thu, 10 Sep 2026 16:50:44 +0700 https://najib.id/en/writing/2026/hijrah-backend-06/ Thu, 10 Sep 2026 15:30:00 +0700 https://najib.id/en/writing/2026/hijrah-backend-06/ <p>My Go system, fresh out of the migration, was born with one inherited illness. All repositories slept in two giant folders named <code>repository</code> and <code>usecase</code>, alerts, billing, geofence, fuel, everything mixed into one. Technically nothing was wrong; mentally, it was a big city with no districts. To find any house, you had to memorize the whole town.</p> <p>This episode is about tidying that city, into 14 domain modules, while its endpoints kept serving production. Because, as you know, there&rsquo;s no pause button for a system used by tens of thousands of people hahaha.</p>