Microservices Architecture Trends in 2021

Santosh Karla | 3 min read
Microservices Architecture has emerged as a ‘fitting technique’ that allows modern developers to design and scale highly flexible applications in a loosely coupled environment. The independent architecture of microservices builds flexible applications by decomposing them further into discrete services that independently operate specific business functions.

In this architecture, each service uses standardized application programming interfaces (APIs) to communicate with other services, allowing the services to be written in various languages using different technologies. In contrast, monolithic structures are interlinked and could only be scaled together.

Why Choose Microservices Architecture?
An increasing number of organizations choose Microservices Architecture because of its modular characteristics that enable scalability and flexibility while reducing development efforts. The advent of multiple options like cloud-native services and function-as-a-service (AWS Lambda and Microsoft Azure) have created a favorable environment for microservices in the IT hemisphere.

For enterprises that are looking to be more agile, with reduced barriers and bottlenecks, to speed up delivery time, Microservices Architecture is a viable approach. The cloud platforms also enable microservices to be scaled from total inactivity to high volume functionality, which is essential for applications that undergo rigorous testing.

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What to consider while adopting Microservices Architecture
Microservices architecture offers the freedom to choose different programming languages and frameworks for each component and makes it a favorable choice for complex applications.

You may consider converting a monolithic application to Microservices if they wish to segregate the application’s functionality into individual actions or focused services with limited scope. Complex monolithic applications are hard to convert to Microservices. In this case, developers can consider building only the new functionalities as Microservices.

The interdependencies among these loosely coupled services can affect the unavailability of the application during service redeployment. These dependency issues can be resolved during the designing phase of the application. It is advisable to create a blueprint for the microservices architecture, as refactoring a monolithic application is not easily-achievable.

Depending on the use cases, the developers should find a balance between availability, consistency, and partition-tolerance. It is also vital to consider the complexities of distributed service to achieve a high-quality end product.

According to Martin Fowler, the following requirements should be fulfilled before developers decide to migrate a monolithic application to microservice architecture:

1. Quick Provisioning: Should be able to provision servers quickly
2. Regular Monitoring: Detect issues and errors, including server unavailability, functional and business errors, and performance issues.
3. Fast Application Deployment: Launch services swiftly and quickly to production and test environments.

When utilized effectively, Microservices Architecture can significantly scale an application when the number of developers working on the application increases. The main purpose of using microservices architecture is to build a macro level application with less complexity while keeping track of new services added to the system and when a new connection between the microservices is made. Examining the complexity and regularly checking the entire application system will ensure the interconnected microservices work reliably and efficiently.

What are the benefits of a Microservices Architecture?
Microservices offer a range of advantages. Here are the primary ones:

1. Builds highly-scalable applications
2. Offers deployment options like cloud-native and function-as-a-service
3. Enables application components to be built in different languages.
4. Sustainable deployment and individual development.
5. Reduces operational costs and overhead

Organizations that are continually trying to launch high-quality products should consider the benefits of using Microservice Architecture for building their applications.

Using the microservices approach will help organizations to allot specific business services to separate teams to achieve an organized and structured operations cycle. The intelligently interconnected microservices structure will allow teams to move with the evolving market demands without disrupting the central business operations.