Distributed Systems Interview Questions

350 real Distributed Systems questions asked in live technical interviews — each with a model answer. Updated weekly.

🎤 Auto-captured by Assisting AI during live interviews

These Distributed Systems interview questions were captured from real interviews by candidates using Assisting AI. Each links to a full model answer. For real-time help during your own interview, get Assisting AI from ₹500/day.

What edge cases should an interviewer ask about for CAP?🟡 Medium · Conceptual · Asked 1×How would you implement or configure tolerance in a production environment?🟡 Medium · Coding · Asked 1×What would you inspect first when linearizability is slow or unstable?🟡 Medium · Debugging · Asked 1×How would you monitor and alert on failures involving serializability?🟡 Medium · Conceptual · Asked 1×Which configuration choices matter most for Raft?🟡 Medium · Conceptual · Asked 1×How would you document a production design that uses phase?🟡 Medium · Behavioral · Asked 1×When would you use commit, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×How would you troubleshoot a problem involving linearizability?🟡 Medium · Debugging · Asked 1×When is serializability a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×How would you migrate an existing system to Paxos safely?🔴 Hard · System Design · Asked 1×Describe a realistic interview scenario where sharding would be useful.🟡 Medium · Conceptual · Asked 1×How would you troubleshoot a problem involving commit?🟡 Medium · Debugging · Asked 1×Which configuration choices matter most for serializability?🟡 Medium · Conceptual · Asked 1×How does sharding compare with a common alternative?🟡 Medium · Conceptual · Asked 1×Explain the role of two in production systems.🟢 Easy · Conceptual · Asked 1×What edge cases should an interviewer ask about for tolerance?🟡 Medium · Conceptual · Asked 1×How would you document a production design that uses consensus?🟡 Medium · Behavioral · Asked 1×What follow-up could reveal whether a candidate really understands sharding?🟡 Medium · Conceptual · Asked 1×How would you document a production design that uses CAP?🟡 Medium · Behavioral · Asked 1×Which configuration choices matter most for consensus?🟡 Medium · Conceptual · Asked 1×Why is the use of Raft important in production?🟢 Easy · Conceptual · Asked 1×Describe a realistic interview scenario where Paxos would be useful.🟡 Medium · Conceptual · Asked 1×How would you document a production design that uses sharding?🟡 Medium · Behavioral · Asked 1×What benefits and trade-offs come with phase?🟡 Medium · Conceptual · Asked 1×How would you test a production implementation that uses saga?🟡 Medium · Other · Asked 1×How would you design for failure recovery around saga?🔴 Hard · System Design · Asked 1×What would you inspect first when outbox is slow or unstable?🟡 Medium · Debugging · Asked 1×When is outbox a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×Explain the role of CAP in production systems.🟢 Easy · Conceptual · Asked 1×When would you use tolerance, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×How would you monitor and alert on failures involving linearizability?🟡 Medium · Conceptual · Asked 1×What metrics would you monitor for serializability?🟡 Medium · Conceptual · Asked 1×What follow-up could reveal whether a candidate really understands serializability?🟡 Medium · Conceptual · Asked 1×What are common mistakes when using consensus?🟡 Medium · Debugging · Asked 1×How would you monitor and alert on failures involving consensus?🟡 Medium · Conceptual · Asked 1×Explain the role of Raft in production systems.🟢 Easy · Conceptual · Asked 1×How would you troubleshoot a problem involving Raft?🟡 Medium · Debugging · Asked 1×Why is the use of Paxos important in production?🟢 Easy · Conceptual · Asked 1×What security considerations apply to sharding?🔴 Hard · Conceptual · Asked 1×How would you monitor and alert on failures involving sharding?🟡 Medium · Conceptual · Asked 1×How would you optimize a system that depends on saga?🟡 Medium · System Design · Asked 1×How would you troubleshoot a problem involving CAP?🟡 Medium · Debugging · Asked 1×How would you implement or configure CAP in a production environment?🟡 Medium · Coding · Asked 1×How would you document a production design that uses tolerance?🟡 Medium · Behavioral · Asked 1×What are common mistakes when using linearizability?🟡 Medium · Debugging · Asked 1×How would you optimize a system that depends on linearizability?🟡 Medium · System Design · Asked 1×Explain the role of consensus in production systems.🟢 Easy · Conceptual · Asked 1×How is sharding typically used in a real system?🟡 Medium · Conceptual · Asked 1×What follow-up could reveal whether a candidate really understands outbox?🟡 Medium · Conceptual · Asked 1×How would you troubleshoot a problem involving consensus?🟡 Medium · Debugging · Asked 1×How would you explain the trade-off between correctness and performance when using sharding?🟢 Easy · Conceptual · Asked 1×What would you inspect first when two is slow or unstable?🟡 Medium · Debugging · Asked 1×How would you migrate an existing system to two safely?🔴 Hard · System Design · Asked 1×Why is the use of commit important in production?🟢 Easy · Conceptual · Asked 1×Describe a realistic interview scenario where outbox would be useful.🟡 Medium · Conceptual · Asked 1×Which configuration choices matter most for tolerance?🟡 Medium · Conceptual · Asked 1×What are common mistakes when using serializability?🟡 Medium · Debugging · Asked 1×How would you troubleshoot a problem involving serializability?🟡 Medium · Debugging · Asked 1×What security considerations apply to serializability?🔴 Hard · Conceptual · Asked 1×How would you optimize a system that depends on Paxos?🟡 Medium · System Design · Asked 1×How would you optimize a system that depends on two?🟡 Medium · System Design · Asked 1×What are common mistakes when using phase?🟡 Medium · Debugging · Asked 1×How would you monitor and alert on failures involving outbox?🟡 Medium · Conceptual · Asked 1×How would you design for failure recovery around CAP?🔴 Hard · System Design · Asked 1×When is CAP a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×How would you monitor and alert on failures involving Raft?🟡 Medium · Conceptual · Asked 1×What follow-up could reveal whether a candidate really understands Raft?🟡 Medium · Conceptual · Asked 1×Explain the role of saga in production systems.🟢 Easy · Conceptual · Asked 1×What follow-up could reveal whether a candidate really understands saga?🟡 Medium · Conceptual · Asked 1×Describe a realistic interview scenario where linearizability would be useful.🟡 Medium · Conceptual · Asked 1×How should a system using consensus be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×When would you use Raft, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×Explain the role of sharding in production systems.🟢 Easy · Conceptual · Asked 1×When would you use saga, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×How would you optimize a system that depends on phase?🟡 Medium · System Design · Asked 1×How would you test a production implementation that uses tolerance?🟡 Medium · Other · Asked 1×How does tolerance compare with a common alternative?🟡 Medium · Conceptual · Asked 1×What metrics would you monitor for linearizability?🟡 Medium · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using serializability?🟢 Easy · Conceptual · Asked 1×What are common mistakes when using quorum?🟡 Medium · Debugging · Asked 1×How would you explain the trade-off between correctness and performance when using consensus?🟢 Easy · Conceptual · Asked 1×What follow-up could reveal whether a candidate really understands consensus?🟡 Medium · Conceptual · Asked 1×How would you implement or configure linearizability in a production environment?🟡 Medium · Coding · Asked 1×How would you optimize a system that depends on serializability?🟡 Medium · System Design · Asked 1×How would you implement or configure Raft in a production environment?🟡 Medium · Coding · Asked 1×What security considerations apply to Raft?🔴 Hard · Conceptual · Asked 1×How should a system using saga be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×Which configuration choices matter most for outbox?🟡 Medium · Conceptual · Asked 1×How would you test a production implementation that uses CAP?🟡 Medium · Other · Asked 1×What follow-up could reveal whether a candidate really understands CAP?🟡 Medium · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using quorum?🟢 Easy · Conceptual · Asked 1×Describe a realistic interview scenario where Raft would be useful.🟡 Medium · Conceptual · Asked 1×What security considerations apply to Paxos?🔴 Hard · Conceptual · Asked 1×When would you use sharding, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×What benefits and trade-offs come with tolerance?🟡 Medium · Conceptual · Asked 1×How would you document a production design that uses linearizability?🟡 Medium · Behavioral · Asked 1×How would you test a production implementation that uses two?🟡 Medium · Other · Asked 1×What follow-up could reveal whether a candidate really understands commit?🟡 Medium · Conceptual · Asked 1×How would you optimize a system that depends on tolerance?🟡 Medium · System Design · Asked 1×How would you test a production implementation that uses serializability?🟡 Medium · Other · Asked 1×How does consensus compare with a common alternative?🟡 Medium · Conceptual · Asked 1×What are common mistakes when using Raft?🟡 Medium · Debugging · Asked 1×Describe a realistic interview scenario where two would be useful.🟡 Medium · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using phase?🟢 Easy · Conceptual · Asked 1×How would you troubleshoot a problem involving tolerance?🟡 Medium · Debugging · Asked 1×How would you monitor and alert on failures involving tolerance?🟡 Medium · Conceptual · Asked 1×Explain the role of linearizability in production systems.🟢 Easy · Conceptual · Asked 1×How is quorum typically used in a real system?🟡 Medium · Conceptual · Asked 1×How would you design for failure recovery around consensus?🔴 Hard · System Design · Asked 1×What security considerations apply to commit?🔴 Hard · Conceptual · Asked 1×How would you monitor and alert on failures involving CAP?🟡 Medium · Conceptual · Asked 1×What metrics would you monitor for two?🟡 Medium · Conceptual · Asked 1×Which configuration choices matter most for two?🟡 Medium · Conceptual · Asked 1×Why is the use of saga important in production?🟢 Easy · Conceptual · Asked 1×What security considerations apply to CAP?🔴 Hard · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using CAP?🟢 Easy · Conceptual · Asked 1×How is Raft typically used in a real system?🟡 Medium · Conceptual · Asked 1×What benefits and trade-offs come with Paxos?🟡 Medium · Conceptual · Asked 1×Why is the use of phase important in production?🟢 Easy · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using commit?🟢 Easy · Conceptual · Asked 1×What metrics would you monitor for Paxos?🟡 Medium · Conceptual · Asked 1×What metrics would you monitor for phase?🟡 Medium · Conceptual · Asked 1×How would you optimize a system that depends on commit?🟡 Medium · System Design · Asked 1×How would you implement or configure saga in a production environment?🟡 Medium · Coding · Asked 1×What edge cases should an interviewer ask about for quorum?🟡 Medium · Conceptual · Asked 1×What would you inspect first when sharding is slow or unstable?🟡 Medium · Debugging · Asked 1×When would you use phase, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×How would you troubleshoot a problem involving phase?🟡 Medium · Debugging · Asked 1×How would you implement or configure phase in a production environment?🟡 Medium · Coding · Asked 1×How is saga typically used in a real system?🟡 Medium · Conceptual · Asked 1×When would you use outbox, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×What follow-up could reveal whether a candidate really understands quorum?🟡 Medium · Conceptual · Asked 1×What edge cases should an interviewer ask about for Paxos?🟡 Medium · Conceptual · Asked 1×Explain the role of quorum in production systems.🟢 Easy · Conceptual · Asked 1×When would you use linearizability, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×How would you design for failure recovery around linearizability?🔴 Hard · System Design · Asked 1×When would you use quorum, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using two?🟢 Easy · Conceptual · Asked 1×How would you implement or configure commit in a production environment?🟡 Medium · Coding · Asked 1×How would you document a production design that uses outbox?🟡 Medium · Behavioral · Asked 1×When would you use CAP, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×Why is the use of tolerance important in production?🟢 Easy · Conceptual · Asked 1×How would you design for failure recovery around tolerance?🔴 Hard · System Design · Asked 1×What are common mistakes when using Paxos?🟡 Medium · Debugging · Asked 1×How should a system using outbox be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×How is CAP typically used in a real system?🟡 Medium · Conceptual · Asked 1×Explain the role of Paxos in production systems.🟢 Easy · Conceptual · Asked 1×What edge cases should an interviewer ask about for phase?🟡 Medium · Conceptual · Asked 1×What metrics would you monitor for commit?🟡 Medium · Conceptual · Asked 1×What benefits and trade-offs come with saga?🟡 Medium · Conceptual · Asked 1×What are common mistakes when using tolerance?🟡 Medium · Debugging · Asked 1×What would you inspect first when quorum is slow or unstable?🟡 Medium · Debugging · Asked 1×How would you document a production design that uses Raft?🟡 Medium · Behavioral · Asked 1×How would you document a production design that uses Paxos?🟡 Medium · Behavioral · Asked 1×What are common mistakes when using sharding?🟡 Medium · Debugging · Asked 1×When is two a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×What would you inspect first when CAP is slow or unstable?🟡 Medium · Debugging · Asked 1×How would you migrate an existing system to quorum safely?🔴 Hard · System Design · Asked 1×What edge cases should an interviewer ask about for Raft?🟡 Medium · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using Paxos?🟢 Easy · Conceptual · Asked 1×How does commit compare with a common alternative?🟡 Medium · Conceptual · Asked 1×How is outbox typically used in a real system?🟡 Medium · Conceptual · Asked 1×How is serializability typically used in a real system?🟡 Medium · Conceptual · Asked 1×What follow-up could reveal whether a candidate really understands phase?🟡 Medium · Conceptual · Asked 1×Explain the role of commit in production systems.🟢 Easy · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using outbox?🟢 Easy · Conceptual · Asked 1×How would you implement or configure serializability in a production environment?🟡 Medium · Coding · Asked 1×What would you inspect first when serializability is slow or unstable?🟡 Medium · Debugging · Asked 1×When is quorum a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×How would you test a production implementation that uses consensus?🟡 Medium · Other · Asked 1×How would you migrate an existing system to Raft safely?🔴 Hard · System Design · Asked 1×How would you test a production implementation that uses commit?🟡 Medium · Other · Asked 1×How would you document a production design that uses commit?🟡 Medium · Behavioral · Asked 1×What are common mistakes when using CAP?🟡 Medium · Debugging · Asked 1×Why is the use of serializability important in production?🟢 Easy · Conceptual · Asked 1×Describe a realistic interview scenario where quorum would be useful.🟡 Medium · Conceptual · Asked 1×How would you optimize a system that depends on consensus?🟡 Medium · System Design · Asked 1×How would you troubleshoot a problem involving Paxos?🟡 Medium · Debugging · Asked 1×How would you design for failure recovery around two?🔴 Hard · System Design · Asked 1×How is commit typically used in a real system?🟡 Medium · Conceptual · Asked 1×Why is the use of outbox important in production?🟢 Easy · Conceptual · Asked 1×How would you migrate an existing system to CAP safely?🔴 Hard · System Design · Asked 1×What follow-up could reveal whether a candidate really understands tolerance?🟡 Medium · Conceptual · Asked 1×How does serializability compare with a common alternative?🟡 Medium · Conceptual · Asked 1×How would you troubleshoot a problem involving quorum?🟡 Medium · Debugging · Asked 1×How would you migrate an existing system to consensus safely?🔴 Hard · System Design · Asked 1×Why is the use of sharding important in production?🟢 Easy · Conceptual · Asked 1×How would you monitor and alert on failures involving two?🟡 Medium · Conceptual · Asked 1×Why is the use of quorum important in production?🟢 Easy · Conceptual · Asked 1×How would you test a production implementation that uses Paxos?🟡 Medium · Other · Asked 1×How would you test a production implementation that uses outbox?🟡 Medium · Other · Asked 1×How should a system using CAP be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×When is linearizability a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using Raft?🟢 Easy · Conceptual · Asked 1×When is Raft a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×How is Paxos typically used in a real system?🟡 Medium · Conceptual · Asked 1×When is sharding a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×How would you implement or configure two in a production environment?🟡 Medium · Coding · Asked 1×How does two compare with a common alternative?🟡 Medium · Conceptual · Asked 1×What metrics would you monitor for outbox?🟡 Medium · Conceptual · Asked 1×What security considerations apply to tolerance?🔴 Hard · Conceptual · Asked 1×When is tolerance a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×When is consensus a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×When would you use Paxos, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×How would you implement or configure sharding in a production environment?🟡 Medium · Coding · Asked 1×What are common mistakes when using two?🟡 Medium · Debugging · Asked 1×What security considerations apply to two?🔴 Hard · Conceptual · Asked 1×Explain the role of phase in production systems.🟢 Easy · Conceptual · Asked 1×What are common mistakes when using saga?🟡 Medium · Debugging · Asked 1×How does saga compare with a common alternative?🟡 Medium · Conceptual · Asked 1×How would you troubleshoot a problem involving outbox?🟡 Medium · Debugging · Asked 1×How would you design for failure recovery around outbox?🔴 Hard · System Design · Asked 1×What benefits and trade-offs come with CAP?🟡 Medium · Conceptual · Asked 1×How should a system using Raft be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×When is Paxos a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×What follow-up could reveal whether a candidate really understands Paxos?🟡 Medium · Conceptual · Asked 1×How would you design for failure recovery around sharding?🔴 Hard · System Design · Asked 1×How is two typically used in a real system?🟡 Medium · Conceptual · Asked 1×How would you implement or configure outbox in a production environment?🟡 Medium · Coding · Asked 1×How would you optimize a system that depends on CAP?🟡 Medium · System Design · Asked 1×Describe a realistic interview scenario where serializability would be useful.🟡 Medium · Conceptual · Asked 1×What follow-up could reveal whether a candidate really understands linearizability?🟡 Medium · Conceptual · Asked 1×How should a system using sharding be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×How would you test a production implementation that uses phase?🟡 Medium · Other · Asked 1×What benefits and trade-offs come with outbox?🟡 Medium · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using linearizability?🟢 Easy · Conceptual · Asked 1×What security considerations apply to quorum?🔴 Hard · Conceptual · Asked 1×What security considerations apply to consensus?🔴 Hard · Conceptual · Asked 1×What benefits and trade-offs come with Raft?🟡 Medium · Conceptual · Asked 1×How would you test a production implementation that uses Raft?🟡 Medium · Other · Asked 1×How does Raft compare with a common alternative?🟡 Medium · Conceptual · Asked 1×How would you troubleshoot a problem involving two?🟡 Medium · Debugging · Asked 1×What would you inspect first when commit is slow or unstable?🟡 Medium · Debugging · Asked 1×How would you troubleshoot a problem involving saga?🟡 Medium · Debugging · Asked 1×Explain the role of outbox in production systems.🟢 Easy · Conceptual · Asked 1×How would you migrate an existing system to outbox safely?🔴 Hard · System Design · Asked 1×How should a system using linearizability be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×How would you document a production design that uses two?🟡 Medium · Behavioral · Asked 1×How should a system using phase be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×What metrics would you monitor for Raft?🟡 Medium · Conceptual · Asked 1×What benefits and trade-offs come with sharding?🟡 Medium · Conceptual · Asked 1×How does phase compare with a common alternative?🟡 Medium · Conceptual · Asked 1×How would you design for failure recovery around commit?🔴 Hard · System Design · Asked 1×Describe a realistic interview scenario where saga would be useful.🟡 Medium · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using tolerance?🟢 Easy · Conceptual · Asked 1×How would you implement or configure Paxos in a production environment?🟡 Medium · Coding · Asked 1×Which configuration choices matter most for Paxos?🟡 Medium · Conceptual · Asked 1×When would you use two, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×What benefits and trade-offs come with two?🟡 Medium · Conceptual · Asked 1×When is commit a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×How would you monitor and alert on failures involving commit?🟡 Medium · Conceptual · Asked 1×What would you inspect first when saga is slow or unstable?🟡 Medium · Debugging · Asked 1×When is saga a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×How would you test a production implementation that uses quorum?🟡 Medium · Other · Asked 1×How would you implement or configure quorum in a production environment?🟡 Medium · Coding · Asked 1×How would you document a production design that uses quorum?🟡 Medium · Behavioral · Asked 1×How is consensus typically used in a real system?🟡 Medium · Conceptual · Asked 1×What would you inspect first when consensus is slow or unstable?🟡 Medium · Debugging · Asked 1×What would you inspect first when Raft is slow or unstable?🟡 Medium · Debugging · Asked 1×How would you monitor and alert on failures involving Paxos?🟡 Medium · Conceptual · Asked 1×What would you inspect first when tolerance is slow or unstable?🟡 Medium · Debugging · Asked 1×How does linearizability compare with a common alternative?🟡 Medium · Conceptual · Asked 1×How would you optimize a system that depends on sharding?🟡 Medium · System Design · Asked 1×Describe a realistic interview scenario where commit would be useful.🟡 Medium · Conceptual · Asked 1×What edge cases should an interviewer ask about for saga?🟡 Medium · Conceptual · Asked 1×How would you optimize a system that depends on outbox?🟡 Medium · System Design · Asked 1×What metrics would you monitor for tolerance?🟡 Medium · Conceptual · Asked 1×How should a system using serializability be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×How would you optimize a system that depends on quorum?🟡 Medium · System Design · Asked 1×Describe a realistic interview scenario where consensus would be useful.🟡 Medium · Conceptual · Asked 1×What edge cases should an interviewer ask about for consensus?🟡 Medium · Conceptual · Asked 1×How would you design for failure recovery around Paxos?🔴 Hard · System Design · Asked 1×What edge cases should an interviewer ask about for two?🟡 Medium · Conceptual · Asked 1×How would you design for failure recovery around phase?🔴 Hard · System Design · Asked 1×What security considerations apply to outbox?🔴 Hard · Conceptual · Asked 1×What benefits and trade-offs come with quorum?🟡 Medium · Conceptual · Asked 1×How should a system using quorum be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×What metrics would you monitor for consensus?🟡 Medium · Conceptual · Asked 1×How would you migrate an existing system to sharding safely?🔴 Hard · System Design · Asked 1×How should a system using two be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×How would you monitor and alert on failures involving phase?🟡 Medium · Conceptual · Asked 1×What benefits and trade-offs come with commit?🟡 Medium · Conceptual · Asked 1×What are common mistakes when using commit?🟡 Medium · Debugging · Asked 1×How would you document a production design that uses saga?🟡 Medium · Behavioral · Asked 1×Describe a realistic interview scenario where CAP would be useful.🟡 Medium · Conceptual · Asked 1×How would you test a production implementation that uses linearizability?🟡 Medium · Other · Asked 1×What benefits and trade-offs come with serializability?🟡 Medium · Conceptual · Asked 1×Why is the use of consensus important in production?🟢 Easy · Conceptual · Asked 1×How would you implement or configure consensus in a production environment?🟡 Medium · Coding · Asked 1×How should a system using Paxos be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×How would you test a production implementation that uses sharding?🟡 Medium · Other · Asked 1×Why is the use of two important in production?🟢 Easy · Conceptual · Asked 1×What metrics would you monitor for saga?🟡 Medium · Conceptual · Asked 1×How would you explain the trade-off between correctness and performance when using saga?🟢 Easy · Conceptual · Asked 1×Why is the use of linearizability important in production?🟢 Easy · Conceptual · Asked 1×What edge cases should an interviewer ask about for serializability?🟡 Medium · Conceptual · Asked 1×What edge cases should an interviewer ask about for sharding?🟡 Medium · Conceptual · Asked 1×What follow-up could reveal whether a candidate really understands two?🟡 Medium · Conceptual · Asked 1×When is phase a poor choice for a production system?🟡 Medium · Conceptual · Asked 1×Which configuration choices matter most for commit?🟡 Medium · Conceptual · Asked 1×How does CAP compare with a common alternative?🟡 Medium · Conceptual · Asked 1×How would you migrate an existing system to tolerance safely?🔴 Hard · System Design · Asked 1×What edge cases should an interviewer ask about for linearizability?🟡 Medium · Conceptual · Asked 1×How does quorum compare with a common alternative?🟡 Medium · Conceptual · Asked 1×How would you design for failure recovery around quorum?🔴 Hard · System Design · Asked 1×How would you migrate an existing system to saga safely?🔴 Hard · System Design · Asked 1×What metrics would you monitor for CAP?🟡 Medium · Conceptual · Asked 1×Explain the role of tolerance in production systems.🟢 Easy · Conceptual · Asked 1×When would you use serializability, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×What benefits and trade-offs come with consensus?🟡 Medium · Conceptual · Asked 1×What security considerations apply to phase?🔴 Hard · Conceptual · Asked 1×Describe a realistic interview scenario where phase would be useful.🟡 Medium · Conceptual · Asked 1×How should a system using commit be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×Which configuration choices matter most for saga?🟡 Medium · Conceptual · Asked 1×Describe a realistic interview scenario where tolerance would be useful.🟡 Medium · Conceptual · Asked 1×How is linearizability typically used in a real system?🟡 Medium · Conceptual · Asked 1×How would you migrate an existing system to serializability safely?🔴 Hard · System Design · Asked 1×Which configuration choices matter most for quorum?🟡 Medium · Conceptual · Asked 1×How would you monitor and alert on failures involving quorum?🟡 Medium · Conceptual · Asked 1×How would you optimize a system that depends on Raft?🟡 Medium · System Design · Asked 1×How should a system using tolerance be designed for high load or concurrency?🔴 Hard · System Design · Asked 1×Explain the role of serializability in production systems.🟢 Easy · Conceptual · Asked 1×How would you migrate an existing system to commit safely?🔴 Hard · System Design · Asked 1×What are common mistakes when using outbox?🟡 Medium · Debugging · Asked 1×How do you redistribute data across a cluster when changing the number of partitions?🔴 Hard · Conceptual · Asked 1×Why is the use of CAP important in production?🟢 Easy · Conceptual · Asked 1×Which configuration choices matter most for CAP?🟡 Medium · Conceptual · Asked 1×How would you design for failure recovery around serializability?🔴 Hard · System Design · Asked 1×When would you use consensus, and when would you choose an alternative?🟡 Medium · Conceptual · Asked 1×How would you design for failure recovery around Raft?🔴 Hard · System Design · Asked 1×What edge cases should an interviewer ask about for outbox?🟡 Medium · Conceptual · Asked 1×How is tolerance typically used in a real system?🟡 Medium · Conceptual · Asked 1×Which configuration choices matter most for linearizability?🟡 Medium · Conceptual · Asked 1×What would you inspect first when Paxos is slow or unstable?🟡 Medium · Debugging · Asked 1×What metrics would you monitor for sharding?🟡 Medium · Conceptual · Asked 1×What would you inspect first when phase is slow or unstable?🟡 Medium · Debugging · Asked 1×Which configuration choices matter most for phase?🟡 Medium · Conceptual · Asked 1×How would you migrate an existing system to phase safely?🔴 Hard · System Design · Asked 1×What edge cases should an interviewer ask about for commit?🟡 Medium · Conceptual · Asked 1×What security considerations apply to saga?🔴 Hard · Conceptual · Asked 1×What benefits and trade-offs come with linearizability?🟡 Medium · Conceptual · Asked 1×What security considerations apply to linearizability?🔴 Hard · Conceptual · Asked 1×How does Paxos compare with a common alternative?🟡 Medium · Conceptual · Asked 1×How is phase typically used in a real system?🟡 Medium · Conceptual · Asked 1×How does outbox compare with a common alternative?🟡 Medium · Conceptual · Asked 1×How would you document a production design that uses serializability?🟡 Medium · Behavioral · Asked 1×What metrics would you monitor for quorum?🟡 Medium · Conceptual · Asked 1×Which configuration choices matter most for sharding?🟡 Medium · Conceptual · Asked 1×How would you monitor and alert on failures involving saga?🟡 Medium · Conceptual · Asked 1×How would you migrate an existing system to linearizability safely?🔴 Hard · System Design · Asked 1×

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