Book Image

Building Microservices with Spring

By : Dinesh Rajput, Rajesh R V
Book Image

Building Microservices with Spring

By: Dinesh Rajput, Rajesh R V

Overview of this book

Getting Started with Spring Microservices begins with an overview of the Spring Framework 5.0, its design patterns, and its guidelines that enable you to implement responsive microservices at scale. You will learn how to use GoF patterns in application design. You will understand the dependency injection pattern, which is the main principle behind the decoupling process of the Spring Framework and makes it easier to manage your code. Then, you will learn how to use proxy patterns in aspect-oriented programming and remoting. Moving on, you will understand the JDBC template patterns and their use in abstracting database access. After understanding the basics, you will move on to more advanced topics, such as reactive streams and concurrency. Written to the latest specifications of Spring that focuses on Reactive Programming, the Learning Path teaches you how to build modern, internet-scale Java applications in no time. Next, you will understand how Spring Boot is used to deploying serverless autonomous services by removing the need to have a heavyweight application server. You’ll also explore ways to deploy your microservices to Docker and managing them with Mesos. By the end of this Learning Path, you will have the clarity and confidence for implementing microservices using Spring Framework. This Learning Path includes content from the following Packt products: • Spring 5 Microservices by Rajesh R V • Spring 5 Design Patterns by Dinesh Rajput
Table of Contents (22 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

Microservices and containers


There is no direct relationship between microservices and containers. Microservices can run without containers and containers can run monolithic applications. However, there is a sweet spot between microservices and containers.

Containers are good for monolithic applications; however, the complexities and the size of the monolith application may kill some of the benefits of containers. For example, spinning new containers quickly may not be easy with monolithic applications. In addition to that, monolithic applications generally have local environment dependencies, such as local disk, stove pipe dependencies with other systems, and more. Such applications are difficult to manage with container technologies. This is where microservices go hand in hand with containers.

The following diagram shows three polyglot microservices running on the same host machine and sharing the same operating system, but abstracts the runtime environment:

The real advantage of containers...