Distributed Resilience interview questions
Circuit Breakers, Distributed Tracing, Eventual Consistency (Sagas), Exponential Backoff Retries, Message Brokers (Kafka)
67 questions with answers and explanations · 67 flashcards
Questions (page 1 of 2)
- Why do teams use a circuit breaker in a microservices architecture in production code?Multiple choiceEasy
- Which problem might occur if correlation IDs are not propagated consistently across all services in a distributed architecture?Multiple choiceHard
- How would you explain a common approach to implementing retries in a microservices-based Java application in an interview?Multiple choiceMedium
- What could be a consequence of setting a very high threshold for failure in a circuit breaker?Multiple choiceHard
- Which of the following best describes the 'Database-per-Service' pattern in a microservices architecture?Multiple choiceHard
- How would you explain a potential risk when not implementing exponential backoff during retries in microservices in an interview?Multiple choiceMedium
- How does distributed tracing assist in the performance optimization of a microservice architecture?Multiple choiceHard
- In a distributed system, how does injecting a unique correlation ID at the API edge router help in monitoring?Multiple choiceEasy
- Which of the following best describes the function of a Circuit Breaker in a microservice architecture?Multiple choiceMedium
- Why is it important to configure a circuit breaker with appropriate fallback mechanisms?Multiple choiceMedium
- Which technology stack is commonly used for visualizing the request journey in a distributed system?Multiple choiceMedium
- How does the use of Correlation IDs aid in debugging distributed systems?Multiple choiceEasy
- How would you explain a key difference between a closed and open circuit breaker state in an interview?Multiple choiceEasy
- What problem does the outbox pattern solve in an event-driven microservice?Multiple choiceHard
- When implementing exponential backoff retries, what is an important consideration to avoid excessive delays?Multiple choiceHard
- Why is Mapped Diagnostic Context (MDC) important for logging in a distributed tracing setup?Multiple choiceMedium
- How can distributed tracing improve the performance optimization of a microservice architecture?Multiple choiceHard
- In the context of distributed tracing, what role does MDC (Mapped Diagnostic Context) play?Multiple choiceMedium
- How does implementing a circuit breaker enhance the resilience of a microservices system?Multiple choiceMedium
- Why do teams use tools like OpenTelemetry for visualizing the request journey in a microservice architecture in production code?Multiple choiceMedium
- How would you explain a potential issue when configuring a circuit breaker with very aggressive timeout settings in an interview?Multiple choiceHard
- When is exponential backoff retry most appropriate?Multiple choiceMedium
- In a microservice architecture, what is the main advantage of using a message broker like Apache Kafka?Multiple choiceEasy
- What does a correlation ID primarily enable in a microservice system?Multiple choiceEasy
- What does the 'open' state in a circuit breaker signify?Multiple choiceEasy
- Why can setting a Circuit Breaker’s failure threshold too low become a problem in practice?Multiple choiceMedium
- How would you explain a key challenge when implementing Eventual Consistency through Sagas in distributed systems in an interview?Multiple choiceHard
- Why does Kubernetes in managing microservices matter in this design?Multiple choiceMedium
- What role do correlation IDs play in distributed tracing?Multiple choiceMedium
- How would you explain a key advantage of using microservices over a monolithic architecture in an interview?Multiple choiceEasy
- Which Java library provides support for implementing retries with exponential backoff in a microservices architecture?Multiple choiceMedium
- In a microservices architecture, how can you handle transient network failures gracefully?Multiple choiceMedium
- In the context of circuit breakers, what is a potential drawback of the 'fail fast' approach?Multiple choiceHard
- In a microservices architecture, how can Circuit Breakers help manage synchronous blocking threads?Multiple choiceHard
- When should a circuit breaker transition from closed to open?Multiple choiceEasy
- How would you explain a potential pitfall when using Circuit Breakers without proper monitoring in an interview?Multiple choiceMedium
- Why is it useful to injecting a unique Correlation ID at the API Edge router in a distributed system?Multiple choiceEasy
- What could be a potential issue if a Correlation ID is not propagated across all microservices?Multiple choiceHard
- Why do teams use exponential backoff retries in a microservices architecture in production code?Multiple choiceEasy
- Which Kubernetes feature is essential for orchestrating microservices?Multiple choiceMedium
- In a microservices architecture, what is a benefit of using a circuit breaker pattern?Multiple choiceMedium
- How does an exponential backoff strategy help in improving system resilience?Multiple choiceMedium
- Which Java library can be used to implement a circuit breaker pattern in microservices?Multiple choiceEasy
- Which principle helps mitigate the impact of network unreliability in a distributed system?Multiple choiceEasy
- What role does a circuit breaker play in preventing thread exhaustion in a Java application?Multiple choiceMedium
- Why is the Circuit Breaker pattern crucial in handling network failures in a microservices architecture?Multiple choiceEasy
- In the context of microservices, which aspect of exponential backoff can help balance between retry attempts and service availability?Multiple choiceHard
- Why do teams use Circuit Breakers in distributed systems in production code?Multiple choiceEasy
- In Java, how can Resilience4j be utilized to implement a Circuit Breaker?Multiple choiceMedium
- How does a Circuit Breaker differ from a fallback mechanism in dealing with service failures?Multiple choiceHard