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How would you ensure data consistency between the source and destination regions?

General/Othereasy0.2 min readPremium
Frequency
Low
Asked at 1 company
Category
243
questions in General/Other
Difficulty Split
151E|43M|49H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Capco
Expert AnswerPremium
38 wordsInterview-ready
**Strategies**: (1) CRR, CDC, dual-write; (2) Conflict resolution—last-writer-wins or app-specific; (3) Validation—checksums, counts, spot checks; (4) Monitoring—replication lag, consistency checks; (5) Failover—test; RPO/RTO defined. Accept eventual consistency where possible. Document model....
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 Capco. The answer also includes follow-up discussion points that interviewers commonly explore.

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