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The 27-Hour Phantom Bug: How Data Misinterpretation Almost Derailed an Architecture
"성공률 0%의 함정" 잘못된 데이터 진단이 초래할 뻔한 27시간의 리팩토링
Why it matters
This case study underscores the critical necessity of rigorous data validation in LLM engineering before committing to massive architectural shifts. It reveals how a minor regex failure can mask actual performance, leading teams toward costly and redundant system rewrites.
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LLM engineeringPrompt augmentationregex bugArchitecture rewriteData validation