How to Measure Code Quality Objectively

Two metrics give you objective code quality. First, Connascence Degree: how many modules break when you change one. Track this per feature over time. Rising Cd means quality is degrading. Second, Regression Rate: how often changes break unrelated parts. A rising regression rate proves the system is becoming more fragile.

These metrics flow automatically from your code and deployment pipeline. No subjective reviews needed. When both are stable or declining, your code quality is under control. When they spike, you have a structural problem that no amount of code review will fix.