Why Should We Use Microservices Architecture

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Before learning Why should we use Microservices Architecture,

Firstly we need to understand Monolithic Architecture and its problems.

What is Monolithic Architecture?

Monolithic Architecture is a traditional way of building applications. Moreover, It’s like a large container that has tightly coupled with all the components. In conclusion, Each component fully depends on the other.

Monolithic Architecture
Monolithic Architecture is presented in the picture above.

UI parts packed with backend services in the Monolithic Architecture. As a result, UIUser ServiceFlight Service, and Billing Service are located together in a single deliverable.

Advantages of Monolithic Architecture

  1. Simplicity of development
  2. Simplicity of testing
  3. Low cost in the early stages of the application
  4. Simplicity of debugging
  5. Simplicity of deployment

Disadvantages of Monolithic Architecture

  1. Slow speed of development
  2. High code coupling
  3. Testing becomes harder
  4. Performance issues
  5. Lack of flexibility

In short, To overcome with problems of Monolithic Architecture, We have to shift towards Microservices Architecture.

What is Microservices Architecture?

Microservices solve these challenges of monolithic systems by being as modular as possible. As a result, they help build an application as a suite of small services, each running in its own process and are independently deployable.

In addition, These services could be developed in a variety of programming languages and employ a variety of data storage methods. While this results in the development of systems that are scalable and flexible, it needs a dynamic makeover.

Similarly, Microservices are often connected via APIs and can leverage many of the same tools and solutions that have grown in the RESTful and web service ecosystem. Therefore, Testing these APIs can help validate the flow of data and information throughout your microservice deployment.

Microservices Architecture
Microservices Architecture is presented in the picture above.

Advantages of Microservices

  1. A microservice can be developed by a fairly small team.
  2. Easy integration and automatic deployment.
  3. As a result, The developers can make use of the latest technologies
  4. Similarly, It gives developers the freedom to independently develop and deploy services.
  5. In conclusion, The code is organized around business capabilities.

Disadvantages of Microservices

  1. Due to distributed deployment, testing can become complicated and tedious
  2. Similarly, An increasing number of services can result in information barriers.
  3. However, Being a distributed system, it can result in duplication of effort
  4. Certainly, Developers have to put additional effort to make communication between the services
  5. When the number of services increases, integration and managing whole products can become complicated

Why Should We Use Microservices

Simpler To DeployDeploy in literal pieces without affecting other services.
Simpler To UnderstandFollow code easier since the function is isolated and less dependent.
Reusability Across BusinessShare small services like payment or login systems across the business.
Faster Defect IsolationWhen a test fails or a service goes down, isolate it quickly with microservices.
Minimized Risk Of ChangeAvoid locking in technologies or languages – change on the fly without risk.

Conclusion

When you are working on a small application use Monolithic Architecture to save cost. Else use Microservices for performance-oriented, scalable, Independent, large applications.

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Written by 

Pallav is working as Software Consultant at Knoldus Inc. He is a technology enthusiast and a keen learner with more than 1.5 years of experience. He works as a Quality Catalyst in the organization. He has a good understanding of programming languages like Java and Scala. He likes to listen to songs and playing table tennis.