What is a Microservice?

A microservice is basically a self-contained process that provides an unique business capability. Different microservices act together as a single larger system. But behind the system, it is microservices all the way. For example, when we see any e-commerce shopping website, we can just see the items that we can order, but behind the screen, several microservices work together to produce the on-screen service. In the backend, it has a microservice to take the orders, a microservice to maintain the wishlist, a service for authenticating credit cards, and so on.

All these services are actually mini-applications performing business capability. What makes this entire organisation interesting is that it is not organised from software layers. We don’t need to create a web microservice, a data microservice, or a business logic microservice. We are creating microservices around business capability. So we have a separate wishlist microservice, an order microservice, and a processing microservice.

These microservices communicate with each other through well-defined inner phase usually through rest and messages. They normally share their information via HTTP (Hyper Text Transfer Protocol).

Every microservice is responsible for its own data.

Characteristics of MicroServices

  • They are mini-applications that stand alone
  • Microservices have fine-grained functionality. They are very much specialized
  • in what they do
  • They are all language neutral.

Why use MicroServices?

Developers traditionally use the monolithic applications for developing any code. So, when any problem arises in the code, the entire monolithic application gets disturbed. Hence developers need to use separate applications for different sections of their work. That is where the need for microsites arises.

Easier to distribute nerd work. It is easier to distribute the entire work among different developer’s team instead of all the developers working on the same core site. Using microservices the work can be separated among different teams resulting in lesser confusion and hence lesser chance of stepping on each other’s toes.

It loads balance easily. With microservices, it is easier to share the server load

Microservices help us to fix problems in older applications. Some pretty old coding apps that is completely bug free still have some performance issues in terms of generating reports because of the ORM is kind of wimpy. Most of activities are fine but because of the bad data base structure or any other issues, the application might be really slow to generate reports. By implementing a separate microsite in the database and by sharing the data by certain jSON objects the complete application can be converted into a high performance report generating app.

Without a Microservice

When a developer’s team develops an application, and it starts growing, the traffic and usage of the application increases slowly. Ones it gets good response from its users, new features are added and hence new geeks add up.

The application that was a simple one now has become entangled.  Now several tech teams work together to develop the same application. Although the developers are independent, they are still dependent on each other as they often work on overlapping zones. Geeks of different teams working in the same area, results in collision resulting degradation in productivity. In return it turns difficult for the individual teams to make changes because the impact of other teams is important, hence which confusion and conflicts deems off the productivity of the entire organization.

With a Microservice

When the entire service is divided into multiple microservices, with each microservice headed by a different team leader, the operations are handled separately with each team members working independently with no confusion and conflict.

Microservices let you fragment any application headed by different managers working in separate teams within one organization. Because of simultaneous work done separately, the outcome of each team’s effort results in the company’s overall productivity.

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