Book Image

Jakarta EE Cookbook - Second Edition

By : Elder Moraes
Book Image

Jakarta EE Cookbook - Second Edition

By: Elder Moraes

Overview of this book

Jakarta EE is widely used around the world for developing enterprise applications for a variety of domains. With this book, Java professionals will be able to enhance their skills to deliver powerful enterprise solutions using practical recipes. This second edition of the Jakarta EE Cookbook takes you through the improvements introduced in its latest version and helps you get hands-on with its significant APIs and features used for server-side development. You'll use Jakarta EE for creating RESTful web services and web applications with the JAX-RS, JSON-P, and JSON-B APIs and learn how you can improve the security of your enterprise solutions. Not only will you learn how to use the most important servers on the market, but you'll also learn to make the best of what they have to offer for your project. From an architectural point of view, this Jakarta book covers microservices, cloud computing, and containers. It allows you to explore all the tools for building reactive applications using Jakarta EE and core Java features such as lambdas. Finally, you'll discover how professionals can improve their projects by engaging with and contributing to the community. By the end of this book, you'll have become proficient in developing and deploying enterprise applications using Jakarta EE.
Table of Contents (14 chapters)

Determining the state of a microservice by using the MicroProfile Health Check API

According to the Eclipse MicroProfile Health Check specification, we have the following:

" checks are used to determine if a computing node needs to be discarded (terminated, shutdown) and eventually replaced by another (healthy) instance."

So, when you think about the increasing granularity of distributed services in a microservice architecture, you really need to have (or should consider having) a way for your monitoring and management tools to deal with the health state of each service.

Here, in this recipe, you will learn how to use the Eclipse MicroProfile Health Check to provide endpoints that will expose the health check of your microservice in two ways: liveness and readiness.