In this chapter, we will learn how to deal with network failures, which are inevitable in a distributed environment. In order to do that, we will introduce the circuit breaker architectural pattern and cover when it should be used, and what its benefits are. We will look at its Netflix implementation, Hystrix. We will also cover how it is implemented and how it can be used. As an example, we will use Hystrix to add resilience and fault tolerance to our sample application.
Hands-On Cloud Development with WildFly
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Hands-On Cloud Development with WildFly
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Overview of this book
The book starts by introducing you to WildFly Swarm—a tool that allows you to create runnable microservices from Java EE components. You’ll learn the basics of Swarm operation—creating microservices containing only the parts of enterprise runtime needed in a specific case. Later, you’ll learn how to configure and test those services.
In order to deploy our services in the cloud, we’ll use OpenShift. You’ll get to know basic information on its architecture, features, and relationship to Docker and Kubernetes. Later, you’ll learn how to deploy and configure your services to run in the OpenShift cloud.
In the last part of the book, you’ll see how to make your application production-ready. You’ll find out how to configure continuous integration for your services using Jenkins, make your application resistant to network failures using Hystrix, and how to secure them using Keycloak.
By the end of the book, you’ll have a functional example application and will have practical knowledge of Java EE cloud development that can be used as a reference in your other projects.
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Current Title:
Hands-On Cloud Development with WildFly
Table of Contents (14 chapters)
Preface
Free Chapter
Java EE and Modern Architectural Methodologies
Getting Familiar with WildFly Swarm
Right-Sizing Your Services
Tuning the Configuration of Your Services
Testing Your Services with Arquillian
Deploying Applications on the Cloud with OpenShift
Configuring Storage for Your Applications
Scaling and Connecting Your Services
Configuring Continuous Integration Using Jenkins
Providing Security Using Keycloak
Adding Resilience Using Hystrix
Future Direction
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