Software Developer III Interview Questions and Answers

Load balancing and messaging are crucial for scalability and reliability in microservices architecture.

• Load balancing ensures even distribution of traffic among multiple instances of a service.

• Messaging enables asynchronous communication between microservices.

• Load balancing can be achieved through software or hardware solutions like NGINX, HAProxy, or AWS ELB.

• Messaging can be implemented using message brokers like RabbitMQ, Apache Kafka, or AWS SQS.

• Load balancing and messagin...read more

Distributed tracing is a technique used to monitor and debug microservices architecture.

• It involves tracking requests as they flow through multiple services

• Each service adds its own trace information to the request

• This allows for easy identification of performance bottlenecks and errors

• Tools like Zipkin and Jaeger can be used for distributed tracing

Transaction management in microservices is crucial for ensuring data consistency and integrity.

• Each microservice should have its own database to manage transactions independently.

• Use distributed transactions or two-phase commit protocol to ensure atomicity across multiple microservices.

• Implement compensating transactions to handle failures and rollbacks.

• Consider using event-driven architecture to decouple services and improve scalability.

• Use a centralized logging and monitori...read more