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Author Kornilov, Dmitry, author

Title Beginning Helidon : building cloud-native microservices and applications / Dmitry Kornilov, Daniel Kec, Dmitry Aleksandrov
Published [New York] : Apress, [2023]


Description 1 online resource
Contents Intro -- Table of Contents -- About the Authors -- About the Technical Reviewers -- Introduction -- Preface -- Chapter 1: Introduction -- Introducing Helidon -- Helidon Flavors -- Helidon MP -- Helidon SE -- Which Flavor Should You Use? -- Summary -- Chapter 2: Your First Application -- Generating Your First Application -- Helidon CLI -- Project Starter -- Helidon Maven Archetypes -- Analyzing Generated Project -- Quickstart Application -- Maven Project -- CDI -- RESTful Web Service -- Build and Run -- Packaging -- Executable JAR -- jlink Image -- Native Image -- Local Native Image Build
Docker Native Image Build -- Deploying to Kubernetes -- Summary -- Chapter 3: Configuration -- Expressions -- Programmatic API -- Config Sources -- Converters -- Automatic Converter -- Aggregated Properties -- Custom Converter -- Profiles -- Property Level -- Config Source Level -- Meta Configuration -- YAML Config Source -- Custom Config Source -- Dynamic Config Source -- Kubernetes ConfigMap -- Environment Variables -- Mounted Volume -- Summary -- Chapter 4: Observability -- What Is Observability? -- Health -- Kubernetes Probes -- MicroProfile Health
Adding Health Checks to Your Helidon Application -- Using Project Starter -- Using CLI -- Adding Dependencies Manually -- Built-in Checks -- Custom Checks -- Metrics -- Adding MicroProfile Metrics Support to Your Helidon Application -- Using Project Starter -- Using CLI -- Adding Dependencies Manually -- Sample Application -- MicroProfile Metrics REST API -- Metrics Model -- Metric Identity -- Metric Scopes -- Base Scope -- Vendor Scope -- Application Scope -- Metric Metadata -- Metrics Types -- Using MicroProfile Metrics API -- Counter -- Using Annotations -- Using Programmatic API -- Gauge
Using Annotations -- Using Programmatic APIs -- Concurrent Gauge -- Using Annotations -- Using Programmatic API -- Histogram -- Using Programmatic API -- Meter -- Using Annotations -- Using Programmatic APIs -- Simple Timer -- Using Annotations -- Using Programmatic API -- Timer -- Using Annotations -- Using Programmatic API -- Tracing -- Distributed Tracing -- Adding Tracing to Your Helidon Application -- Using Project Starter -- Using CLI -- Adding Dependencies Manually -- Helidon Tracing Implementation -- Helidon Built-in Spans -- MicroProfile OpenTracing API -- Configuration
Enabling/Disabling Tracing -- Renaming a Top-Level Span -- Logging -- Logging in Helidon -- Mapped Diagnostic Context (MDC) -- MDC with JUL -- MDC with Log4j -- MDC with SLF4J -- Summary -- Chapter 5: Communicating with Other Services -- MicroProfile Rest Client -- Integration with MicroProfile Config -- Exception Handling -- Modifying Requests and Responses -- Handling Headers -- Asynchronous Operations -- Programmatic APIs -- MicroProfile Rest Client Conclusion -- JAX-RS Client API -- Providers -- Asynchronous Operations -- JAX-RS Client API Conclusion -- CORS -- Summary
Summary Learn how to build cloud-native microservices with Helidon - an open-source Java framework from Oracle. This book will show you how to take full advantage of the cloud by optimizing applications with fast start times, low memory consumption, and a small disk footprint. The open-source Helidon framework provides all that, and more. Its based on Java 17, giving you full access to new code features. This book reveals how Helidon also supports modern enterprise Java standards such as MicroProfile. Plus, you'll see how Helidon lets you use GraalVM to build lightning-fast native executables, and its unique reactive layer allows you to develop efficient low-level APIs. Each chapter in the book teaches a new Helidon concept through practical examples based on real-life use-cases. Youll learn how to add observability and security to your microservices, how to work with databases, and call other services. You'll also look at all MicroProfile 5.0 platform specifications as well as some stand-alone specs such as Messaging and Long Running Actions. Best of all, everything covered in this book makes it a great study guide for the upcoming Oracle Helidon certification - the perfect way to prove your new skills to a prospective employer! You will: Package microservices using JLink and GraalVM Deploy microservices to Kubernetes Review MicroProfile 5.0 specifications in detail Understand the basics of Helidon Reactive APIs
Notes Place of publication from publisher's website
Chapter 6: Accessing Data
Includes index
Description based on online resource; title from digital title page (viewed on October 06, 2023)
Subject Cloud computing.
Web applications.
Java (Computer program language)
Cloud computing
Java (Computer program language)
Web applications
Form Electronic book
Author Kec, Daniel, author
Aleksandrov, Dmitry, author
ISBN 9781484294734