Spectra Consultancy Senior Software Developer Interview Questions and Answers

Communication between microservices is typically done through APIs, message queues, or event-driven architecture.

• Use RESTful APIs for synchronous communication between microservices

• Implement message queues like RabbitMQ or Kafka for asynchronous communication

• Utilize event-driven architecture with tools like Apache Kafka or AWS SNS/SQS

• Consider gRPC for high-performance communication between microservices

I will tackle escalations by first understanding the issue, prioritizing tasks, communicating effectively, and seeking help from senior team members if needed.

• Understand the root cause of the escalation

• Prioritize tasks based on urgency and impact

• Communicate effectively with stakeholders

• Seek help from senior team members if needed

The microservices design pattern used is the API Gateway pattern.

• API Gateway pattern is used to provide a single entry point for clients to access multiple microservices.

• It helps in routing requests, load balancing, authentication, and monitoring.

• Examples include Netflix Zuul and Amazon API Gateway.

OOPs concepts are fundamental principles of Object-Oriented Programming, including Inheritance, Encapsulation, Polymorphism, and Abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex imple...read more

Program to sort employee salaries using Java 8

• Use Java 8 Stream API to sort the employee salaries

• Use Comparator to compare salaries

• Collect the sorted salaries into a list

Spring Actuator is a feature in Spring Boot that provides endpoints to monitor and interact with the application.

• Provides insight into application's health, metrics, and other information

• Includes endpoints like /health, /info, /metrics, etc.

• Can be customized and extended to add custom endpoints