Book Image

Mastering Spring Cloud

By : Piotr Mińkowski
Book Image

Mastering Spring Cloud

By: Piotr Mińkowski

Overview of this book

Developing, deploying, and operating cloud applications should be as easy as local applications. This should be the governing principle behind any cloud platform, library, or tool. Spring Cloud–an open-source library–makes it easy to develop JVM applications for the cloud. In this book, you will be introduced to Spring Cloud and will master its features from the application developer's point of view. This book begins by introducing you to microservices for Spring and the available feature set in Spring Cloud. You will learn to configure the Spring Cloud server and run the Eureka server to enable service registration and discovery. Then you will learn about techniques related to load balancing and circuit breaking and utilize all features of the Feign client. The book now delves into advanced topics where you will learn to implement distributed tracing solutions for Spring Cloud and build message-driven microservice architectures. Before running an application on Docker container s, you will master testing and securing techniques with Spring Cloud.
Table of Contents (22 chapters)
Title Page
Copyright and Credits
Packt Upsell

Reload configuration automatically

We have already discussed the most important features of Spring Cloud Config. At that point, we implemented examples illustrating how to use different backend storage as a repository. But no matter whether we decided to choose filesystem, Git, or Vault, our client-side application needed to restart to be able to fetch the newest configuration from the server. However, sometimes this is not an optimal solution, especially if we have many microservices running and some of them use the same generic configuration.

Solution architecture

Even if we created a dedicatedpropertyfile per single application, an opportunity to dynamically reload it without restart could be very helpful. As you may have deduced, such a solution is available for Spring Boot and therefore for Spring Cloud. In Chapter 4, Service Discovery while describing deregistration from the service discovery server, I introduced an endpoint, /shutdown, which may be used for gracefully shutting down...