7 Reasons to Truly Love Microservicesby Anna Khrupa on February 15, 2019
The concept of microservices architecture has been first introduced in 2011. Since then microservices have proved its efficiency over monolith. Flexibility of deployment process, a great fit for Agile methodology, and reliability are the main benefits listed by the companies that adopt microservices.
In this post, we review the benefits of microservices in detail. Let’s check them out!
#1: Fault tolerance
Fault tolerance means the ability of a system to operate even during major system failures. For example, in case of traffic spikes or load increases, fault tolerance can be boosted by switching off less mission-critical system parts (for example, analytics or log management tools). Next, through such instruments as message queueing, all transactions of interaction between services are completed after the system is recovered.
#2: Following of Single Responsibility Principle
The Single Responsibility Principle (SRP) is the first in the SOLID set of principles of object-oriented design. The principle states: “A class should have a single responsibility”. Each software module should have one and only one reason to change. Put it simply, developers should divide complicated classes into smaller classes. These classes are responsible for a particular piece of business logic. As the result, developers find it easier to understand and maintain the codebase.
The SRP is considered as the most relatable SOLID principle to microservices. Why? First, the SRP encourages developers to divide their business logic into customer-centric, independently versioned modules that communicate with each other through RESTful APIs and network-based protocols. Second, decoupling responsibilities makes it easy to deploy frequently and not worry about affecting the whole system.
#3: Easy deployment
The microservices architecture makes it easier to deploy too. Each service can be deployed, redeployed, and tested independently. Thus, we during deployment of a specific microservice, you don’t have to reload the others). As the result, you won’t compromise the integrity or productivity of an application.
Microservice architecture is made for scalability. How? Let’s say we need to deploy a heavy service that requires lots of server resources. With the monolith, you’re likely to face performance issues like downtime during deployment. Meanwhile, with microservices you can deploy the services in multiple servers, thus, enhance performance and not impact other services. Last but not least, microservices are easy to integrate with third-party services like Jenkins, Docker, and Kubernetes.
#5: Improved productivity
Productivity directly depends on the state of a codebase. The easier it is to maintain and scale, the faster it is to make any changes and updates without breaking anything. Here are a few benefits of microservices architecture for productivity:
- Agility. Since the application is modular, developers find it easy to understand and modify a small piece of functionality. It also results in a low entry barrier for newcomers who can tackle the system faster.
- Clean code. Small chunks of code are cleaner and easier to maintain.
- Reusability. Developers are able simply to clone a repository, set necessary configurations, build up specific business logic upon that piece of code and get a microservice ready for deployment.
- Organization around business capabilities. Each microservice is organized around a specific, meaningful piece of business logic, making it easier to maintain and manage.
- Faster time to market. Since software updates are faster to make, it’s easier to test the hypothesis or release the product.
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#6: Freedom of technologies
As you might have already guessed, each microservice can be written in a different framework or a programming language. That means that developers are able to stick to the most optimal technology stack that’ll solve the issue of a specific microservice (whether it’s performance, security, or any other challenge).
#7: Autonomy for distributed teams
The last but not least, microservices advantage lies in optimized workflow for distributed teams. Development and deployment of a bulky monolith system can be complicated and disorganized, especially if we’re speaking about distributed teams over the globe. For instance, deployment of the monolith results in a significant downtime since it’s necessary to restart the whole system from scratch. With microservices, teams are able to work autonomously and implement new features or deploy without having to coordinate the actions with the rest of the team. Such autonomy aids in overall agility and independence of development teams.
As you can see, microservices can bring lots of advantages to your project: from agility to the overall reliability of the system. However, keep in mind some restrictions that come with microservices implementation. If you want to keep up with the topic, subscribe to our newsletter to receive the freshest insights!