Part 2.

Part 2 of the book consists of six chapters, which discuss several parts of Spring Boot application development.

Chapter 2 covers several common tasks a developer typically uses in a Spring Boot application. This includes configuration management, logging, using command line runner, data validation, and more.

Chapter 3 shows various techniques for connecting to a database from a Spring Boot application. This chapter also discusses, in depth, multiple approaches to accessing data from a database.

Chapter 4 introduces you to Spring Boot autoconfiguration and Spring Boot Actuator. Spring Boot autoconfiguration is the magic behind Spring Boot’s simplicity and opinionated nature. Spring Boot Actuator allows you to monitor various application metrics. These metrics can be visualized in GUI-based tools, such as Grafana.

Chapter 5 and Chapter 6 discuss multiple approaches to securing a Spring Boot application. Chapter 5 covers Spring Security and how it works with Spring Boot. Chapter 6 provides several advanced techniques, including multi-factor authentication, signing in with Google, and reCAPTCHA validation.

Chapter 7 discusses how to develop RESTful APIs with Spring Boot. It also covers techniques for handling exceptions in RESTful APIs, writing unit test cases, documenting APIs with OpenAPI, implementing versioning, and securing RESTful APIs.