Microservices vs SOA – What Makes Them Different
Both the microservices and SOA architectures have various pros and cons to them. In microservices, the service can operate and be deployed independently of other services; whereas in SOA, this is impossible. So when it comes down to microservices vs SOA, what are some other differences and which architecture should you choose? This article will go into detail about what both of these architectures entail and which will be best for you.
Microservices vs SOA
SOA Defines Four Basic Types
There are four basic types of services in SOA infrastructure. These services are:
Business services: This is a coarse textured service. This defines the core business operations. These business services are represented through XML, web series definition language and business process execution language.
Enterprise services: The enterprise services execute it functionally. These services rely on the application services. There are many infrastructure services in order to fulfil the business requests.
Application services: These services are fine-grained services. These are bound to specific application content. These services can be supplicated directly through a dedicated user interface.
Infrastructure services: This service executes the non-functional tasks such as authentication, security, auditing and logging. They can be supplicated from the application service and enterprise services.
Microservices Defines Two Types
Microservices architecture has two types of services. These services are:
Functional services: These kinds of services support specific business operations. This kind of service is basically accessed externally. These services are usually not shared with any other services. These services are not exposed in the outside arena. They are mainly available internally.
Infrastructure services: As in the case of SOA, infrastructure service implements the services such as auditing, security and logging.
Some Key Differences Between Microservices and SOA
SOA was basically built on the idea to share as much as possible. On the other hand, microservices was built on the idea to share as little as possible. SOA is more important on the business functionality reuse. Microservices is more important on the basis of bounded concept.
There are many other differences between microservices and SOA. SOA has common governance and standard, whereas microservices architecture has relaxed governance with more focus on the people collaboration and freedom of choice.
SOA uses ESB for the communication system. On the other hand, microservices architecture uses less elaborate and a simple messaging system. SOA maintains a systematic change that requires an in order modifying the monolith. On the other hand, microservices maintain a systematic change in order to create a new service.
There are more detailed differences between the two as well. They include:
Coordination: In the system of SOA, you will have to coordinate with multiple groups in order to create business requests. But in the microservices, there is no coordination among services.
Component sharing: SOA enriches the components sharing system. On the other hand, microservices tries to minimize the sharing through bounded context.
Remote services: SOA services basically rely on messaging as primary remote access protocol. The microservices rely on the two protocols. These microservices are usually homogeneous.
When it comes down to microservices vs SOA, which one is better and which should you implement in your workplace? In the early stage of business, microservices architecture is a good service. But with the growing business, you will have to transform into the SOA in order to replace microservices and maintain a sustainable architecture.