ended6월 10일· 1 sources
When Code Gets Cleaner but Numbers Don't Match: A $2M Data Engineering Mystery
ClickHouse 마이그레이션이 드러낸 것: DRY 리팩토링과 $2M 불일치의 역설
Why it matters
As data teams modernize legacy systems using DRY architecture and tools like ClickHouse and dbt, this migration story reveals an uncomfortable truth: the biggest challenge isn't code refactoring—it's uncovering undocumented business logic buried in legacy systems. The $2M discrepancy discovered during initial validation serves as a cautionary tale for any organization scaling their data infrastructure.
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Data Stack MigrationClickHousedbtDRY refactoringData parity