Refactoring on Architect PARK JUN WOOhttps://www.parkjunwoo.com/tags/refactoring/Recent content in Refactoring on Architect PARK JUN WOOHugoenSat, 06 Jun 2026 15:00:00 +0900Production Traffic Is the Spechttps://www.parkjunwoo.com/opinion/hurl-from-production-traffic/Sat, 06 Jun 2026 15:00:00 +0900https://www.parkjunwoo.com/opinion/hurl-from-production-traffic/Legacy code has no documentation. No tests either. And yet it’s running right now. A month of well-recorded logs is the spec — build Hurl integration tests that capture the current behavior from production traffic, and you can pin down what the legacy does and lay a safety net for refactoring without reading a single line of code.