Multi Region Disaster Recovery Questions

Designing systems for resilience and availability across geographic regions, including strategies for cross region replication, failover, and operational recovery. Candidates should understand deployment models such as active active and active passive and the trade offs they imply for availability, consistency, cost, and operational complexity. Discuss replication topologies and the differences between synchronous and asynchronous replication and how those choices affect consistency and the recovery point objective. Cover leader election and failover coordination mechanisms, conflict resolution approaches including last write wins, version vectors, and convergent data types, and implications for transactional guarantees and global transactions. Include global traffic routing and failover techniques such as DNS based routing, global load balancing, health checks, and the impact of routing and time to live on failover behavior. Address data partitioning and cross region latency trade offs, strategies for orchestrating data recovery and region seeding, backup and restore practices, and testing approaches such as planned failovers, rehearsal drills, and chaos testing. Explain how to derive and meet recovery time objective and recovery point objective from business requirements, and consider monitoring, observability, automation, runbooks, cost considerations, and compliance and data residency requirements.

EasyTechnical

0 practiced

Describe common replication topologies used in cross-region data distribution, including single primary with replicas, chained replication, and multi-master. For each topology, outline typical failure modes and how they influence recovery procedures and RPO.

MediumTechnical

0 practiced

Design a robust pattern to ensure a Kafka -> S3 data pipeline can recover after a regional outage and replay data into the target in the DR region without duplicating downstream outputs. Include handling of consumer offsets, idempotent sinks, and verification of exactly-once semantics where possible.

MediumTechnical

0 practiced

Outline the automated runbook and orchestration steps for promoting a passive DR region to primary after a primary region outage. Include safety checks, data validation steps, blacklists/whitelists of services to promote, automation vs human approval points, and rollback conditions.

MediumTechnical

0 practiced

You are asked to recommend a DR approach balancing cost with data sovereignty for a SaaS product with customers in EU and US. Some customers require EU-only storage. Propose a multi-region replication and backup model that satisfies residency, minimizes cross-region costs, and supports failover for both common and resident-only tenants.

HardSystem Design

0 practiced

Design a disaster recovery architecture for a payment processing service that must comply with PCI-DSS and process global transactions. Address the need for transactional guarantees, fraud detection workflows, settlement, encryption of data in transit and at rest across regions, and how to reconcile transactions after failover.

Unlock Full Question Bank

Get access to hundreds of Multi Region Disaster Recovery interview questions and detailed answers.

Join thousands of developers preparing for their dream job.