Introduction of Microservices with a few Interview Questions

Introduction of Microservices with a few Interview Questions
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Last updated on March 1st, 2022 at 08:32 am

Microservices or Microservices architecture is mainly an SDLC approach where any hue applications can build as a compilation of small functional modules. It is one of the most demanding and highly adopted architectural concepts in the software development industry. It also helps in easy maintenance and makes development faster. Not only that,  Microservices are a big asset for DevOps and Agile as well. It will help the developer to deliver complex and large applications easily, frequently, promptly and reliably. Applications are modeled as collections of services like:

  • Maintainable and Testable
  • Independently deployable
  • Loosely coupled
  • Manageable by a small team
  • Designed and organized according to business capabilities

Above All Microservices are now in high demand among the well known MNC companies and thus they are hiring more and more people in Microservices to make their software development easy. So, if you are interested in Microservices and want to build your career in this field, then it is necessary to prepare yourself by doing some proper course and making yourself prepare for the interview. Here we are providing a few Microservices Interview questions and answers:

Explain Microservices Architecture?

Microservices Architecture is an architectural development method and style to construct an application as a collection of independent services developed for a business domain.

What are the three common tools used in Microservices?

  1. Docker
  2. Wiremock
  3. Hysrix

What are the main components of Microservices?

Below are the main components of Microservices:

  • Clustering, Containers and Orchestration
  • Cloud Infrastructure
  • Infrastructure as Code Conception (IaC)
  • API Gateway
  • Service Delivery
  • Enterprise Service Bus

What are the advantages of Microservices?

There are lots of advantages of Microservices as mentioned below:

  • Microservices can easily mix with other frameworks, databases and libraries or in short you can say it as technology diversity.
  • It has great support for the small and parallel teams.
  • Any process failure will not hamper the entire system and should not bring the system down.
  • Reduce deployment time
  • Self-contained and independent deployment.
  • Can manage the services independently.
  • It has a better way of suppleness and scalability capability.
  • It can build up better communication between developers and business users.

Describe some of the main features of Microservices:

The features of Microservices include:

  • Decoupling – Services are massively decoupled inside the system.  Thus the whole application can easily be altered, constructed and scalable.
  • Business Capabilities: Microservices are simple to understand and focus on only one service.
  • Continuous Delivery Process: It can release software frequently with the help of the systematic automation of software development, testing as well as approval.
  • Componentization: in Other Words Microservices can be observed as autonomous components that can be modified, changed or upgraded easily.
  • Team Autonomy: Each developer can able to work independently to provide a faster project timeline.
  • Agility: Microservices facilitate agile development that means it is now possible to create new features quickly and also can remove them again at any time.
  • Responsibility: Microservices are responsible enough to see applications as products
  • Decentralized Governance: Selecting the perfect tool according to the job is the goal. After That Developers can choose the best tools to sort out any problems.

Describe the working process of Microservice Architecture?

However, Microservice Architecture consists of the below components:

  1. Client – Users from different sources and various devices send requests.
  2. Identity Provider – It will then validate a user or client’s identity and issue security tokens.
  3. API gateway – After that API gateway handles all the requests from its clients.
  4. Static Content – Similarly, It contains all the systems content.
  5. Management – However, here Services are balanced on nodes and failures are identified.
  6. Service Discovery – A guide to finding out the ways of communication between Microservices
  7. Content Delivery Network – In other Words, It contains Distributed Network of Proxy Servers as well as their data centers too.
  8. Remote Service – Now, it will offer remote access to data or information that is present on network devices and computers.

What do you mean by Spring Cloud?

After That Spring Cloud is an integrated software system in which incorporates with external systems. Above All, It is a short term basis framework which may live short and used to build applications quickly. Therefore, It is a great contribution to Microservice architecture due to its association with finite amounts of data processing. However, Some features of Spring Cloud are:

  • Distributed Configuration
  • Distributed Messaging
  • Routing
  • Service to Service Calls
  • Cluster State
  • Global Locks
  • Load Balancing
  • Circuit Breakers
  • Service Registration
  • Service Discovery

What is Spring Boot?

For Instance, Spring Boot is an open-source Java-based framework that offers its developers a platform on which they can create separate, production-based Spring applications. In addition, To increase productivity and to reduce development time, it is mainly used.

What is the main difference between Monolithic and Microservices?

Monolithic  Architecture Microservices
However, Service Startup takes time In Other Words, Service startup is fast
Therefore, Any changes or modifications in the data model, will affect the entire database However, Any changes done in the single data model, will not affect other
In Conclusion, Monolithic architecture is mostly tightly couple So, In Other Words, are loosely couple architecture
In Other Words, Monolithic put pressure on the entire project However, mainly focuses on the products, not the whole project.

Name some of the famous companies which are using Microservices Architecture?

in Conclusion Most of the large scale companies like Twitter, Amazon, Netflix has been transform from Monolithic Architecture to Microservice Architecture.

Rohit Bhatt

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