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

Synchronous communication with Spring Cloud

Spring Cloud provides a set of components to help you in implementing communication between microservices. The first of them is RestTemplate, which is always used for consuming RESTful web services by a client. It is included in a Spring Web project. To use it effectively in a microservices environment, it should be annotated with the @LoadBalanced qualifier. Thanks to that, it will be automatically configured to use Netflix Ribbon and it will be able to take an advantage of service discovery by using service names instead of IP addresses. Ribbon is a client-side load balancer, which provides a simple interface allowing control over the behavior of HTTP and TCP clients. It can be easily integrated with other Spring Cloud components, such as service discovery or circuit breaker, and, furthermore, it is fully transparent to a developer. The next available component is Feign, a declarative REST client also from the Netflix OSS stack. Feign already...