Microservices are a big trend in software development. It’s the practice of developing small, specialized software applications that can be distributed across a number of different software projects. According to the Software Publishing Quarterly, there are about 2,500 microservices or startups in the NYC area alone. These startups tend to be labor-intensive but often produce high-quality products. In this article, we will walk through the definitions, key features, and principles of microservices.
Introduction To Microservices
Microservices, according to James Lewis and Martin Fowler, is a method of creating a single application as a collection of tiny services, each operating in its own process and interacting using lightweight methods, such as an HTTP resource API.
Microservices are a software architectural pattern in which application services are small, autonomous, individually deployable, and scalable. Microservices architectures improve the deployment and development processes by dividing complex systems into smaller and independent modules, capable of being worked on and deployed independently. Microservices allow for organizational agility, flexibility, and scalability. According to Sam Newman, “Microservices are small, autonomous services that work together.”
Microservices Important Points
- These are the services that REST makes available.
- These are small deployable units that have been carefully selected.
- Cloud-based services are required.
- Find a balance between loose coupling and tight cohesion.
- Use a programming language that is popular for writing microservices.
Principles of Microservices
Microservices are based on the following principles:
- Single Responsibility
- Modeled around a business domain.
- Isolate Error
- Automation of infrastructure
- Deploy Independently
One of the key principles of Microservices is that each service is a “single responsibility”. It should be responsible for a single task. You’ve breached the rule if you have more than two responsibilities.
Modeled around a business domain.
Microservices aren’t limited to getting an appropriate technology stack or database. The best stack or database for solving business problems.
Single module applications may not affect large programs. The service may fail at any time. Therefore, it is important to detect errors as quickly as possible and automatically recover from them.
Infrastructure automation is the process of scripting an environment. The scripting environment allows you to apply the same configuration to a single node or thousands of nodes. Also known as configuration management, script infrastructure, and system configuration management.
Microservices are platform-independent. This means we can develop and use them independently without affecting further services.