System Design – Database Replication
Practice system design interview questions focused on database replication. Cover leader-follower setups, failover, and consistency trade-offs. Answer questions and receive feedback on clarity and trade-offs. Ideal for software engineer system design prep. First 2 questions are free with full feedback.
- Level Intermediate
- Questions 12
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Sample system design – database replication interview questions
Preview 6 questions from this track in quiz order. In the full quiz you answer one at a time — type or speak — then get a score and feedback.
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What is database replication?
What a strong answer includes
Copying data across multiple database servers.
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Why would you use replication?
What a strong answer includes
Availability, read scaling, or disaster recovery.
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Explain leader-follower replication.
What a strong answer includes
Writes go to the leader; followers receive copies.
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What is the difference between synchronous and asynchronous replication?
What a strong answer includes
Synchronous waits for confirmation; asynchronous does not.
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How do you handle a leader failure?
What a strong answer includes
Promotes a follower to leader.
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What are the trade-offs of asynchronous replication?
What a strong answer includes
Faster writes but potential data loss.