- The wire format is not usable in environments that only look at the HTTP status code to determine the HC status.
- An MP-HC response can include arbitrary properties using the HealthCheckResponse#withData() methods.
- You can create a HealthCheck implementation for each service, and the MP-HC feature will logically combine them to produce an overall status response.
- A JWT is a JSON Web Token, a JSON-formatted object that has a header, payload, and signature component.
- A claim is a single named value from the JWT payload.
- Anything that can be represented in JSON can be used in a JWT.
- The single main step in authenticating a JWT is validating that it is signed via the RS256 algorithm based on a configured public key.
- One could look at claims other that the groups claim to make checks to add application specific authorization decisions.
Hands-On Enterprise Java Microservices with Eclipse MicroProfile
By :
Hands-On Enterprise Java Microservices with Eclipse MicroProfile
By:
Overview of this book
Eclipse MicroProfile has gained momentum in the industry as a multi-vendor, interoperable, community-driven specification. It is a major disruptor that allows organizations with large investments in enterprise Java to move to microservices without spending a lot on retraining their workforce.
This book is based on MicroProfile 2.2, however, it will guide you in running your applications in MicroProfile 3.0. You'll start by understanding why microservices are important in the digital economy and how MicroProfile addresses the need for enterprise Java microservices. You'll learn about the subprojects that make up a MicroProfile, its value proposition to organizations and developers, and its processes and governance. As you advance, the book takes you through the capabilities and code examples of MicroProfile’s subprojects - Config, Fault Tolerance, Health Check, JWT Propagation, Metrics, and OpenTracing. Finally, you’ll be guided in developing a conference application using Eclipse MicroProfile, and explore possible scenarios of what’s next in MicroProfile with Jakarta EE.
By the end of this book, you'll have gained a clear understanding of Eclipse MicroProfile and its role in enterprise Java microservices.
Table of Contents (18 chapters)
Preface
Free Chapter
Section 1: MicroProfile in the Digital Economy
Introduction to Eclipse MicroProfile
Governance and Contributions
Section 2: MicroProfile's Current Capabilities
MicroProfile Config and Fault Tolerance
MicroProfile Health Check and JWT Propagation
MicroProfile Metrics and OpenTracing
MicroProfile OpenAPI and Type-Safe REST Client
Section 3: MicroProfile Implementations and Roadmap
MicroProfile Implementations, Quarkus, and Interoperability via the Conference Application
Section 4: A Working MicroProfile Example
A Working Eclipse MicroProfile Code Sample
Section 5: A Peek into the Future
Reactive Programming and Future Developments
Using MicroProfile in Multi-Cloud Environments
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