Book Image

Spring Microservices

By : Rajesh R V
Book Image

Spring Microservices

By: Rajesh R V

Overview of this book

The Spring Framework is an application framework and inversion of the control container for the Java platform. The framework's core features can be used by any Java application, but there are extensions to build web applications on top of the Java EE platform. This book will help you implement the microservice architecture in Spring Framework, Spring Boot, and Spring Cloud. Written to the latest specifications of Spring, you'll be able to build modern, Internet-scale Java applications in no time. We would start off with the guidelines to implement responsive microservices at scale. We will then deep dive into Spring Boot, Spring Cloud, Docker, Mesos, and Marathon. Next you will understand how Spring Boot is used to deploy autonomous services, server-less by removing the need to have a heavy-weight application server. Later you will learn how to go further by deploying your microservices to Docker and manage it with Mesos. By the end of the book, you'll will gain more clarity on how to implement microservices using Spring Framework and use them in Internet-scale deployments through real-world examples.
Table of Contents (18 chapters)
Spring Microservices
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
Index

Chapter 6. Autoscaling Microservices

Spring Cloud provides the support essential for the deployment of microservices at scale. In order to get the full power of a cloud-like environment, the microservices instances should also be capable of scaling out and shrinking automatically based on traffic patterns.

This chapter will detail out how to make microservices elastically grow and shrink by effectively using the actuator data collected from Spring Boot microservices to control the deployment topology by implementing a simple life cycle manager.

By the end of this chapter, you will learn about the following topics:

  • The basic concept of autoscaling and different approaches for autoscaling

  • The importance and capabilities of a life cycle manager in the context of microservices

  • Examining the custom life cycle manager to achieve autoscaling

  • Programmatically collecting statistics from the Spring Boot actuator and using it to control and shape incoming traffic