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An Introduction to Microservice Architecture

Introduction to Microservice Architecture
March 04, 2019
By Blue Pi
Reading Time: 3 minutes

The conventional architectural styles require developers to put extra time and effort to build, test, deploy, and update various applications. The developers have to explore ways to keep the applications testable, maintainable, and scalable without extending delivery cycles. Unlike monolithic architectural styles, microservice architecture or microservices makes it easier for programmers to develop, test, maintain, and scale various software applications.
Microservice architecture emphasizes on structuring a software application as a collection of loosely coupled services. It even requires developers to focus extensively on keeping each service testable, maintainable, deployable, and scalable. Many developers these days switch from monolithic architectural styles to microservice architecture to simplify development and deployment of complex software applications, while enabling continuous testing and continuous delivery.

Understanding Important Aspects of Microservice Architecture or Microservices

Overcome Shortcomings of Monolithic Architectural Style
The monolithic architectural style requires developers to build a software application as a single and autonomous unit. Hence, any changes made to the software application impact the entire system. The developers need to build, test, and deploy a new version of software each time its source code changes.
Microservices enable programmers to build the software as a collection of loosely coupled services. The developers can run and deploy the service individually and independently. The modularity helps programmers to make changes to the software application simply by making changes to the specific services.
Accelerate Software Delivery
As mentioned earlier, microservice architecture emphasizes on keeping each service independently deployable. Hence, the developers can write, test, and deploy the service independently. They even have the option to write the service in their preferred programming language.
Many enterprises switch to microservice architecture to accelerate software delivery process without deploying additional developers. Also, microservice architecture helps businesses to adopt new age project management techniques like agile and DevOps.
Improve Fault Resistance
When the software application is developed as a single unit, any defect or bug makes the entire software dysfunctional. But microservice architecture help developer to build the software by combining loosely coupled services. When a particular microservice fails, its neighboring microservices will keep functioning.
The developers can be repaid the bug and redeploy the particular services without making changes to any other services. The feature helps enterprises to reduce application downtime and improve fault isolation. The enterprises even have the option to reduce application failures by monitoring the microservices continuously.
Decentralized Application and Data Management
The developers can build a software application by integrating microservices developed using different technologies and programming languages. Hence, the microservice community recommends decentralized governance and data management. Each microservice needs to be developed and maintained by a specific developer.
Hence, the entire software will be managed by multiple developers with adequate skill and expertise. Likewise, each service will use and manage its own database. The enterprises are not required to make the software application store all data in a single and logical database.
Focus on Business Needs and Priorities
Microservice architecture makes it easier for developers to integrate the software seamlessly with a variety of third-party solutions and services. But it helps businesses to build custom software applications according to their precise needs and priorities by deploying a cross-functional team.
Each cross-functional team will focus on building a particular microservice and manage its lifecycle. The teams can further deliver high-quality services by focusing on business needs and facilitating seamless communication with other services.
Simplified Integration and Deployment
While writing a microservice, the programmers have the option to choose from several programming languages and technologies. They can further accelerate microservice development and simplify microservice integration using a variety of open source and licensed tools.
Also, they can accelerate and automate microservice deployment using open source continuous integration (CI) tools like Hudsons and Jenkins. The developers can further leverage the latest technologies to build and deploy microservices without putting extra time and effort.
Two Distinct Approaches
While implementing microservice architecture, the businesses can choose from two distinct approaches – microservice first and monolith first. While developing new software, many businesses opt for microservice first approach to build modular, flexible, and scalable applications.
On the other hand, many enterprises also switch from the monolithic first approach to microservice architecture while updating existing software applications. They leverage microservices to simplify maintenance and scaling of large and complex software applications.
The number of enterprises using microservices has been increasing consistently. But the developers cannot implement microservices successfully without using microservice architecture pattern language. They need to use microservice architecture pattern language as a tool to decide if the microservice architecture is suitable for a particular software development project and the most appropriate way to use the microservices.

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