Can a production bug actually increase revenue?

Yes— this config error defaulted users to premium, lifting revenue 73% without harming retention or activation.

What code turned the bug into a feature?

A simple feature-flagged if-statement resolver at registration time, with country and segment checks returning premium only for experiment users.

Rarely—most demand fixes. But query data first: if metrics like payments and retention hold, it might reveal user truths worth testing.

🧠 Engineering Culture

버그는 수익을 죽인다. 정말 그럴까? 이 버그는 73% 상승을 가져왔고—사용자가 실제로 선택하는 방식에 대한 혁명적 진실을 증명했다

DevTools Feed Apr 03, 2026 3 min read 14 views

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#A/B experiments #production bugs #revenue optimization #user defaults

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Originally reported by dev.to