RestTemplate
is a Spring component specially adapted to interact with Spring Cloud and microservices. However, Netflix has developed their own tool that acts as a web service client for providing out-of-the-box communication between independent REST services. Feign client, which is in it, generally does the same as RestTemplate
with the @LoadBalanced
annotation, but in a more elegant way. It is a Java to HTTP client binder that works by processing annotations into a templatized request. When using Open Feign client, you only have to create an interface and annotate it. It integrates with Ribbon and Eureka to provide a load balanced HTTP client, fetching all the necessary network addresses from service discovery. Spring Cloud adds support for Spring MVC annotations and for using the same HTTP message converters as in Spring Web.
Mastering Spring Cloud
By :
Mastering Spring Cloud
By:
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
Contributors
Preface
Free Chapter
Introduction to Microservices
Spring for Microservices
Spring Cloud Overview
Service Discovery
Distributed Configuration with Spring Cloud Config
Communication Between Microservices
Advanced Load Balancing and Circuit Breakers
Routing and Filtering with API Gateway
Distributed Logging and Tracing
Additional Configuration and Discovery Features
Message-Driven Microservices
Securing an API
Testing Java Microservices
Docker Support
Spring Microservices on Cloud Platforms
Other Books You May Enjoy
Index
Customer Reviews