Book Image

Spring: Microservices with Spring Boot

By : Ranga Rao Karanam
Book Image

Spring: Microservices with Spring Boot

By: Ranga Rao Karanam

Overview of this book

Microservices helps in decomposing applications into small services and move away from a single monolithic artifact. It helps in building systems that are scalable, flexible, and high resilient. Spring Boot helps in building REST-oriented, production-grade microservices. This book is a quick learning guide on how to build, monitor, and deploy microservices with Spring Boot. You'll be first familiarized with Spring Boot before delving into building microservices. You will learn how to document your microservice with the help of Spring REST docs and Swagger documentation. You will then learn how to secure your microservice with Spring Security and OAuth2. You will deploy your app using a self-contained HTTP server and also learn to monitor a microservice with the help of Spring Boot actuator. This book is ideal for Java developers who knows the basics of Spring programming and want to build microservices with Spring Boot. This book is embedded with useful assessments that will help you revise the concepts you have learned in this book. This book is repurposed for this specific learning experience from material from Packt's Mastering Spring 5.0 by Ranga Rao Karanam.
Table of Contents (7 chapters)

Embedded Servers

One of the important concepts Spring Boot brings in is embedded servers.

Let's first understand the difference between traditional Java web application deployment and this new concept called embedded server.

Traditionally, with Java web applications, we build Web Application Archive (WAR) or Enterprise Application Archive (EAR) and deploy them into servers. Before we can deploy a WAR on the server, we need a web server or an application server installed on the server. The application server would be on top of the Java instance installed on the server. So, we need Java and an application (or web server) installed on the machine before we can deploy our application. The following figure shows an example installation in Linux:

Spring Boot brings in the concept of embedded servers, where the web server is part of the application deployable--JAR. To deploy applications using embedded servers, it is sufficient if Java is installed on the server. The following figure shows an example...