The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications - on any kind of deployment platform.

A key element of Spring is infrastructural support at the application level: Spring focuses on enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments.

Microservices allow large systems to be built up from a number of collaborating components. It does at the process level what Spring has always done at the component level: loosely coupled processes instead of loosely coupled components.

Shopping Application

For example imagine an online shop with separate microservices for user accounts, product-catalog order-processing, and shopping carts:

Inevitably there are a number of moving parts that you have to set up and configure to build such a system. How to get them working together is not obvious - you need to have good familiarity with Spring Boot since Spring Cloud leverages it heavily, several Netflix or other OSS projects are required and, of course, there is some Spring configuration “magic”!

Implementing a microservices architecture in Java isn’t for everyone. For that matter, implementing microservices, in general, isn’t often needed. Most companies do it to scale their people, not their systems. If you’re going to scale your people, hiring Java developers is one of the best ways to do it. After all, there are more developers fluent in Java than most other languages - though JavaScript seems to be catching up quickly!

The Java ecosystem has some well-established patterns for developing microservice architectures. If you’re familiar with Spring, you’ll feel right at home developing with Spring Boot and Spring Cloud