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

Building a messaging system

I think that the most suitable way to introduce main Spring Cloud Stream features is through the sample microservices-based system. We will lightly modify an architecture of the system that has been discussed in the previous chapters. Let me provide a short recall of that architecture. Our system is responsible for processing orders. It consists of four independent microservices. The order-service microservice first communicates with product-service in order to collect the details of the selected products, and then with customer-service to retrieve information about the customer and his accounts. Now, the orders sent to order-service will be processed asynchronously. There is still an exposed RESTful HTTP API endpoint for submitting new orders by the clients, but they are not processed by the application. It only saves new orders, sends it to a message broker, and then responds to the client that the order has been approved for processing. The main goal of the...