Description of Spring Boot framework, its usage, configuration, settings and best cases.

1. Spring Boot.
Boot up your development
Sergey Morenets, March 7, 2015
morenets@mail.ru

2. About author
• Works in IT since 2000
• 11 years of Java SE/EE experience
• Java lecturer
• Multiple speaker at Java User Group
• Winner of 2013 Jboss Community
Recognition Award
https://www.jboss.org/jbcra

3. Agenda
• Overview
• Spring Boot features
• Setup & configuration
• Q&A

4. Goal

5. Goal
• Development environment
• Launch web application
• Minimum configuration

6. Goal

7. Spring Boot
• Stand-alone Spring applications
• Embed Tomcat or Jetty directly (no need
to deploy WAR files)
• Automatically Spring configuration
• Absolutely no code generation and no
requirement for XML configuration
• Convention-over-configuration
• Focus on business features and less on
infrastructure

8. Starters concept
• Aggregate modules
• Trusted versions of libraries
• Similar to micro-service architecture

9. Starters concept
• spring-boot-starter-actuator
• spring-boot-starter-data-jpa
• spring-boot-starter-jdbc
• spring-boot-starter-jersey
• spring-boot-starter-logging
• spring-boot-starter-mobile
• spring-boot-starter-redis
• spring-boot-starter-test
• spring-boot-starter-web

10. Spring Boot

11. Spring Boot

12. Spring Boot

13. Servlets

14. Filters

15. Spring Boot plugin

16. Spring Boot plugin
• spring-boot:run
• spring-boot:repackage

17. Hot replace

18. Hot replace

19. Dependencies

20. Dependencies

21. Customization

22. Tomcat 7

23. Jetty

24. Auto-configuration
• AopAutoConfiguration
• JpaRepositoriesAutoConfiguration
• HibernateJpaAutoConfiguration
• DataSourceAutoConfiguration
• JmsTemplateAutoConfiguration
• MongoAutoConfiguration
• RedisAutoConfiguration
• WebMvcAutoConfiguration
• SecurityAutoConfiguration

25. Properties

26. Properties

27. Properties
Class Prefix
MessageSourceAutoConfiguration spring.messages
BatchProperties spring.batch
ElasticsearchProperties spring.data.elasticsearch
FreeMarkerProperties spring.freemarker
JacksonProperties spring.jackson
DataSourceProperties spring.datasource
JerseyProperties spring.jersey
MailProperties spring.mail
MongoProperties spring.data.mongodb
SecurityProperties security
WebMvcProperties spring.mvc

28. Properties

29. Spring Boot Actuator
• Helps manage and monitor applications
when pushed to production
• Accessible via HTTP, JMX or remote shell

30. Spring Boot Actuator
• Series of endpoints to help manage your
Spring application
• Reads properties and spring beans and
then returns a JSON view
• Allows direct access to non functional
application information without having to
open an IDE or a command prompt

31. Spring Boot Actuator

32. Spring Boot Actuator
• /info
• /health
• /beans
• /env
• /dump
• /metrics
• /trace
• /autoconfigurationreport
• /shutdown

33. Spring Boot Actuator. Health

34. Spring Boot Actuator. Health

35. Spring Boot Actuator.Metrics
• Includes a metrics service with ‘gauge’
and ‘counter’ support
• A ‘gauge’ records a single value; and a
‘counter’ records a delta (an increment or
decrement)
• Metrics for all HTTP requests are
automatically recorded

36. Spring Boot Actuator.Metrics
• System metrics
• Datasource metrics
• WebServer metrics
• Custom metrics

37. Spring Boot Actuator. Metrics

38. Spring Boot Actuator. Custom metrics

39. Spring Boot Actuator. Metrics

40. Pro
• No configuration files
• Auto-configuration
• Maven, Gradle & Ant integration
• Embedded servers: Tomcat, Jetty and
Undertow
• Configuration for multiple Java
technologies
• Monitoring & management out-of-box

41. Cons
• Based on Spring Framework
• Additional configuration for web servers

42. Dropwizard
• Lightweight alternative
• REST web services support using Jersey
• Embedded servers
• Logging and validation
• Templating systems
• Metrics library

43. Q&A