Wipro Node JS Microservices Interview Questions for Experienced Candidates

If you have 3 to 10 years of experience in Node.js and microservices, you may be preparing for an interview at Wipro. To help you succeed, we’ve compiled a list of common interview questions that you should be prepared to answer.

1. What are microservices and how are they different from a monolithic architecture?

Microservices is an architectural style that structures an application as a collection of loosely coupled services. Each service is independently deployable and scalable, and communicates with other services through APIs. In contrast, a monolithic architecture involves building the entire application as a single, self-contained unit.

2. What are the advantages of using Node.js for building microservices?

Node.js is a popular choice for building microservices due to its non-blocking, event-driven architecture, which makes it well-suited for handling a large number of concurrent requests. It also has a rich ecosystem of modules and packages, and is known for its performance and scalability.

3. How would you handle service discovery and communication between microservices in a Node.js application?

There are several approaches to handling service discovery and communication in a microservices architecture, such as using a service registry like Consul or etcd, or implementing a message broker like RabbitMQ or Kafka. In Node.js, you can use libraries like Axios or request-promise to communicate between services using HTTP requests.

4. What tools and techniques would you use to ensure the security of your microservices in a Node.js application?

Securing microservices in a Node.js application involves implementing authentication and authorization mechanisms, encrypting sensitive data, and following best practices for API security. You may also use tools like JSON Web Tokens (JWT) for authentication and authorization, and TLS/SSL for encrypting data in transit.

5. How would you monitor and troubleshoot performance issues in a Node.js microservices architecture?

Monitoring and troubleshooting performance issues in a Node.js microservices architecture can be done using tools like New Relic, Datadog, or Prometheus. You can also use logging and tracing frameworks like Winston or Jaeger to track the flow of requests and identify bottlenecks in the system.

These are just a few examples of the types of questions you may encounter in a Wipro interview for a Node.js microservices role. It’s important to be well-prepared and knowledgeable about the topics mentioned above, as well as other relevant areas of expertise in Node.js and microservices.

Good luck with your interview!