Microservices or microservice architecture is a unique method of developing software systems which has become popular in recent years. Though there is not much information about what it is and how to do it, it has become the popular way for creating enterprise applications.
Thanks to its scalability, this architectural method is deemed suitable when it is required to support a range of devices and platforms- spanning mobile, web etc. or when you are unsure about what kind of devices to support in a cloudy future.
There is no formal, standard definition of microservices but there are some features that help for identification of this style. In essence, microservice architecture is a mode of developing software applications as a suite of small, independently deployable, modular services in which each service runs a unique process and communicates via a lightweight, well-defined mechanism for serving a business goal. Micro service Architecture Application Development Company serves these goals.
The manner in which the services communicate with each other depends on the needs of your application, but most developers use HTTP/ REST with JSON. Professionals are certainly free to select any protocol for communication which is deemed suitable by them but mostly, Representational State Transfer (REST) is a useful method of integration because of its relatively low complexity in comparison to other protocols.
To understand microservice architecture, it is good to grasp the opposite- which is the monolithic style of architecture. As opposed to microservice, monolithic architecture is built as an autonomous, single unit. As per a client-server model, the server side application is a monolith which handles HTTP requests, updates or retrieves data in the database and executes logic.
The disadvantage with monolithic architecture is that all cycles of change typically result in being tied to each other. When a small part of an application is modified, it will need to build and deploy a totally new version. In case you need scaling of specific functions of applications, you may be required to scale the entire application instead of tweaking the desired components.
Some doubt whether microservice architecture is a synonym for SOA development service. SOA or Service Oriented Architecture bears many similarities with microservice architecture. However traditional SOA is a broader framework. Some regard microservice architecture to be a refined, ideal form of SOA.
But there are differences; SOA focuses on imperative programming while microservice architecture deals with responsive actor style of programming. Also SOA models tend to have outsized relational data base, while microservices use micro-SQL or No SQL data bases.
Benefits of Microservice architecture:
It gives freedom to developers to develop and deploy services independently.
It can be developed using a relatively small team.
Code for services can be written in various languages.
It provides automatic deployment and easy integration.
Developers can utilize latest technologies.
It makes faster starting of web container which makes deployment faster.
When change is needed, there is no need for redeploying the complete application, only the particular service needs to be tweaked and redeployed.
Makes it easier for scaling and integrating to third-party services.
These are some aspects about microservice architecture.