Situation: Finance lead needed to understand duplicate records affecting revenue. Task: Explain without jargon. Action: I focused on: what happened (double-counted), why (join bug), impact (revenue overstated Y%), fix (deployed, backfill in progress). Used diagram. Shared timeline. Offered recurring sync....
The complete answer continues with detailed implementation patterns, architectural trade-offs, and production-grade considerations. It covers performance optimization strategies, common pitfalls to avoid, and real-world examples from companies like Adidas. The answer also includes follow-up discussion points that interviewers commonly explore.
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