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Microservices with Spring Boot 3 and Spring Cloud, Third Edition

Microservices with Spring Boot 3 and Spring Cloud, Third Edition

By : Magnus Larsson AB, Magnus Larsson
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Microservices with Spring Boot 3 and Spring Cloud, Third Edition

Microservices with Spring Boot 3 and Spring Cloud, Third Edition

4 (24)
By: Magnus Larsson AB, Magnus Larsson

Overview of this book

Looking to build and deploy microservices but not sure where to start? Check out Microservices with Spring Boot 3 and Spring Cloud, Third Edition. With a practical approach, you'll begin with simple microservices and progress to complex distributed applications. Learn essential functionality and deploy microservices using Kubernetes and Istio. This book covers Java 17, Spring Boot 3, and Spring Cloud 2022. Java EE packages are replaced with the latest Jakarta EE packages. Code examples are updated and deprecated APIs have been replaced, providing the most up to date information. Gain knowledge of Spring's AOT module, observability, distributed tracing, and Helm 3 for Kubernetes packaging. Start with Docker Compose to run microservices with databases and messaging services. Progress to deploying microservices on Kubernetes with Istio. Explore persistence, resilience, reactive microservices, and API documentation with OpenAPI. Learn service discovery with Netflix Eureka, edge servers with Spring Cloud Gateway, and monitoring with Prometheus, Grafana, and the EFK stack. By the end, you'll build scalable microservices using Spring Boot and Spring Cloud.
Table of Contents (26 chapters)
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Index

Developing non-blocking synchronous REST APIs

In this section, we will learn how to develop non-blocking versions of the read APIs. The composite service will make reactive, that is, non-blocking, calls in parallel to the three core services. When the composite service has received responses from all of the core services, it will create a composite response and send it back to the caller. This is illustrated in the following diagram:

Figure 7.2: The getCompositeProduct part of the landscape

In this section, we will cover the following:

  • An introduction to Project Reactor
  • Non-blocking persistence using Spring Data for MongoDB
  • Non-blocking REST APIs in the core services, including how to handle blocking code for the JPA-based persistence layer
  • Non-blocking REST APIs in the composite service

An introduction to Project Reactor

As we mentioned in the Spring WebFlux section in Chapter 2, Introduction to Spring Boot, the reactive support in Spring 5 is based on Project Reactor (https://projectreactor...

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