When Database Concurrency Tests Lie: How Passing RSpec Tests Hid Critical Race Conditions in a High-Stakes Legal System
Debug PostgreSQL concurrency issues where RSpec tests pass but database logic fails. Real case study with FOR UPDATE SKIP LOCKED and thread synchronization solutions.
When Off-the-Shelf Meets Custom Requirements: How a Simple Prescription Product Request Became an Elegant Conditional Checkout Solution
Learn elegant code modification techniques through a real Shopify case study. Handle prescription vs regular products with conditional logic while preserving functionality.
Solving Rails Encoding Errors: From ASCII-8BIT Nightmares to UTF-8 Success - A Complete International User Data Migration Guide
Fix persistent Rails encoding errors blocking international user migrations. Step-by-step solutions for ASCII-8BIT to UTF-8 conversion with real performance gains.
Navigating Ruby and Rails Upgrades: How We Rescued a Legacy Application from 118 Failing Tests and Critical Security Vulnerabilities
Complete guide to upgrading Ruby 3.0.7 to 3.2.7 and Rails 6.1 to 7.1. Real case study achieving 99.15% test success while eliminating security risks and technical debt.