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Most commonly asked microservices interview questions

Microservice architecture – based on a collection of small, loosely-coupled services for rapid and reliable delivery of complex applications – has gained tremendous popularity across industries. As a result, businesses are increasingly transitioning to microservice architectural style from monolith structure. However, the transition is not easy. That is why the know-how and experience in microservices become crucial for companies while hiring a software engineer. In this article, we discuss some of the most commonly asked microservices interview questions by the companies:

How does a microservice architecture work? 

Ans: In a microservice architecture, large applications are designed/built as a collection of small self-contained, loosely-coupled, and independently deployable services. Each of these modules performs a distinct function and can be replaced, scaled, updated, or deleted without impacting the rest of the application. The microservice structure allows applications to grow as required.

What are the main components of microservice architecture?

Ans: Some of the main components of a microservice include containers, clusters, service mesh, service discovery, service delivery, cloud infrastructure, API Gateway.

What are the main challenges in deploying microservices?

Ans: There are two types of challenges when deploying a microservice – technical and functional. From functional challenges perspective, the challenges are that it requires heavy investment. Setting up a microservice infrastructure requires a lot of planning, managing, and executing operations, which is a herculean task.

From the technical point of view, the main challenges are communication among the microservice. How and to what extent should the component of a microservice can be automated? Application maintenance, testing, and debugging also pose significant challenges and need to be handled accordingly.

What are some tools commonly used for microservices?

Ans: Wiremock, Docker, and Hysrix are some essential and most commonly used tools for microservices.

What is Spring Boot?

Ans: Spring Boot is an open-source Java-based framework that is used to build a microservice. It is an integration software that allows developers to create standalone applications that run on their own.

These are some of the commonly asked microservices interview questions. For more detailed topics on Microservices, read this.

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