This document introduces Spring Boot, a framework designed to simplify web application development with minimal configuration and out-of-the-box features. It highlights benefits such as productivity, cleaner code, and support for microservices and automated database upgrades. Additionally, it covers configuration methods, health checks, admin tasks, and how to create a stand-alone JAR.

1. Getting Started with Spring Boot
by David Kiss

2. Agenda
• What is Spring Boot?
• Configuration
• DB versioning with Liquibase
• Health checks
• Admin tasks
• Tracing HTTP requests
• Stand-alone jar

3. What is Spring Boot
• Spring Boot makes it easy to get started with
building web applications with minimum fuss
• Provides out-of-the-box features like
embedded servlet container, security,
metrics, health checks, externalized
configuration)
• No code generation
• No requirement for XML configuration.

4. Built on the Spring Platform

5. Why Using Spring Boot?
• Productivity
– Convention over configuration
– Designed to get you up and running as quickly as possible (http://start.spring.io/)
– Built on top of Spring Framework - wide range of supported technologies & frameworks
• Cleaner code
– Inversion of Control
– Easy to write tests
– Less boilerplate code
• Running in production
– Supports the Microservice Architecture (http://microservices.io/)
– Automated DB upgrades using Liquibase (http://www.liquibase.org/) and Flyway
(http://flywaydb.org/)
– Spring Cloud support (http://projects.spring.io/spring-cloud/) - distributed configuration
management, service discovery, circuit breakers, intelligent routing, etc.
– Eliminates need to manage & tweak application servers

6. How We Benefit From Spring Boot?
• Increased developer productivity
• Ease of deployment
• Support from large and active community

7. Configuration – Hello World!

8. Configuration – Application class
No XML configuration is required

9. Configuration – application.yaml
Environment-aware configuration

10. Configuration – build.properties
Jenkins populates the params

11. Configuration – Build Info
GET http://localhost:8081/manage/info

12. Automated DB versioning
Liquibase will be called on app startup

13. Health-checks – Custom Indicators

14. Health-checks – In Action
GET http://localhost:8081/manage/health

15. Admin Tasks (for internal access)
PUT http://localhost:8081/manage/create-user

16. Tracing HTTP requests
GET http://localhost:8081/manage/trace

17. Stand-alone jar – pom.xml
$ mvn package

18. Stand-alone jar – Start up

19. Q&A