Microservices : Know About The Architecture In Brief
It is a fact that there is no fixed definition for microservices still it is considered as the method which can be used to develop software applications in the form of independently deployable, modular services which are small in size where each service runs a unique process. To serve the business goal they communicate over lightweight mechanism.
Based on the application requirements the services communicate with each other but, most of the developers use REST/HTTP with Protobuf or JSON. The system of opposite to microservices is monolithic and here everything is build as a single autonomous unit. In most cases the server side applications are considered as monolithic which executes logic, handles HTTP requests and updates data. The issue with such an architecture is that things are tied together and a modification to a small section can lead to building and deploying completely new version. Moreover, where there comes to scale a specific function, you will end up scaling the entire application instead of the specific component
Microservices vs. SOA
Now some of you may say that microservices is another name for SOA. SOA was formed during the beginning of this century and microservices has some similarities. SOA is a broader framework and comes with varieties of features. Some of the microservices rejects SOA altogether while some consider it right away.
The focus of SOA is on imperative programming while Microservices focuses on responsive-actor programming style. Microservices uses micro-SQL databases or NoSQL while SOA tends to have an outsized relational database. The main difference between the two is the architecture used to build integrated service set at the first place.
With things changing on the digital world it is invaluable to keep up with the demands in software evolution. Most of the practices in microservices are conducted by developers who have build software applications for larger enterprises. The demand of applications that are adaptable, modular, scalable and quickly accessible is high.
Understanding The Microservice Architecture
As microservice architecture does not have a proper definition, there is no specific model for this style but, most of them will come with few notable characteristics.
In case of microservices architecture, each service can be broken down into individual small components, which can be individually tweaked and deployed without affecting application integrity. This means you can simply change a few services without going for application redeployment through custom microservices app development. It has to be kept in mind that it comes with some drawbacks too like complexity in redistributing component responsibilities, coarser-grained remote APIs and expensive remote calls.
Based on the business priorities and capabilities microservices style is organized. Unlike the case of monolithic architecture here teams are not focused on specific sections while they work as cross-functional teams. Here teams work individually based on services to make specific products.