Microservices - Level I

Practice 36 Microservices - Level I interview questions with detailed answers. Part of the Microservices track on Java Interview Hub.

• What are microservices?
• How do microservices differ from monolithic architectures?
• What are some benefits of using microservices?
• Can you mention any challenges you might face while working with microservices?
• What is the role of an API Gateway in microservices?
• How does an API Gateway manage traffic?
• What are some security measures that can be implemented at the API Gateway?
• Can you explain how an API Gateway can handle load balancing?
• How do microservices communicate with each other?
• What is synchronous vs. asynchronous communication?
• Can you explain the role of message brokers in microservices?
• What are some of the risks involved with inter-service communication?
• What is a Service Registry?
• How does service discovery work in microservices?
• What would happen if a service registry fails?
• How do microservices update their registration and discovery information?
• How do you handle data consistency in microservices?
• What is eventual consistency?
• How would you implement a transaction that spans multiple services?
• What are the trade-offs of using eventual consistency vs. strong consistency?
• What are some strategies for microservices deployment?
• Can you describe blue-green deployment?
• How does canary releasing differ from blue-green deployment?
• What tools would you recommend for automating microservices deployment?
• How do you monitor and manage microservices?
• What metrics are important to monitor in a microservices architecture?
• How can distributed tracing help in monitoring microservices?
• What tools can be used for logging and monitoring in a microservices environment?
• How do you ensure security in microservices?
• What are the common security patterns applicable in microservices?
• How can services securely communicate with each other?
• What are the implications of service-specific databases on security?
• Discuss the patterns used to handle failures in microservices.
• What is the Circuit Breaker pattern?
• How does the Bulkhead pattern help in improving system resilience?
• Can you explain the Retry and Backoff patterns?