Book Image

Microservices with Spring Boot and Spring Cloud - Second Edition

By : Magnus Larsson
3.5 (2)
Book Image

Microservices with Spring Boot and Spring Cloud - Second Edition

3.5 (2)
By: Magnus Larsson

Overview of this book

Want to build and deploy microservices, but don’t know where to start? Welcome to Microservices with Spring Boot and Spring Cloud. This edition features the most recent versions of Spring, Java, Kubernetes, and Istio, demonstrating faster and simpler handling of Spring Boot, local Kubernetes clusters, and Istio installation. The expanded scope includes native compilation of Spring-based microservices, support for Mac and Windows with WSL2, and an introduction to Helm 3 for packaging and deployment. A revamped security chapter now follows the OAuth 2.1 specification and makes use of the newly launched Spring Authorization Server from the Spring team. You’ll start with a set of simple cooperating microservices, then add persistence and resilience, make your microservices reactive, and document their APIs using OpenAPI. Next, you’ll learn how fundamental design patterns are applied to add important functionality, such as service discovery with Netflix Eureka and edge servers with Spring Cloud Gateway. You’ll deploy your microservices using Kubernetes and adopt Istio, then explore centralized log management using the Elasticsearch, Fluentd, and Kibana (EFK) stack, and then monitor microservices using Prometheus and Grafana. By the end of this book, you'll be building scalable and robust microservices using Spring Boot and Spring Cloud.
Table of Contents (6 chapters)

Developing Reactive Microservices

In this chapter, we will learn how to develop reactive microservices, that is, how to develop non-blocking synchronous REST APIs and asynchronous event-driven services. We will also learn about how to choose between these two alternatives. Finally, we will see how to create and run manual and automated tests of a reactive microservice landscape.

As already described in Chapter 1, Introduction to Microservices, the foundation for reactive systems is that they are message-driven—they use asynchronous communication. This enables them to be elastic, in other words, scalable and resilient, meaning that they will be tolerant of failures. Elasticity and resilience together will enable a reactive system to be responsive.

The following topics will be covered in this chapter:

  • Choosing between non-blocking synchronous APIs and event-driven asynchronous services
  • Developing non-blocking synchronous REST APIs
  • Developing event...