Spring Boot. Boot up your development
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Transcript of Spring Boot. Boot up your development
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
Agenda
• Overview• Spring Boot features• Setup & configuration• Q&A
Goal
Goal
• Development environment• Launch web application• Minimum configuration
Goal
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 oninfrastructure
Starters concept
• Aggregate modules• Trusted versions of libraries• Similar to micro-service architecture
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
Spring Boot
Spring Boot
Spring Boot
Servlets
Filters
Spring Boot plugin
Spring Boot plugin
• spring-boot:run• spring-boot:repackage
Hot replace
Hot replace
Dependencies
Dependencies
Customization
Tomcat 7
Jetty
Auto-configuration
• AopAutoConfiguration• JpaRepositoriesAutoConfiguration• HibernateJpaAutoConfiguration• DataSourceAutoConfiguration• JmsTemplateAutoConfiguration• MongoAutoConfiguration• RedisAutoConfiguration• WebMvcAutoConfiguration• SecurityAutoConfiguration
Properties
Properties
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
Properties
Spring Boot Actuator
• Helps manage and monitor applications when pushed to production
• Accessible via HTTP, JMX or remote shell
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
Spring Boot Actuator
Spring Boot Actuator
• /info• /health• /beans• /env• /dump• /metrics• /trace• /autoconfigurationreport• /shutdown
Spring Boot Actuator. Health
Spring Boot Actuator. Health
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
Spring Boot Actuator.Metrics
• System metrics• Datasource metrics• WebServer metrics• Custom metrics
Spring Boot Actuator. Metrics
Spring Boot Actuator. Custom metrics
Spring Boot Actuator. Metrics
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
Cons
• Based on Spring Framework• Additional configuration for web servers
Dropwizard
• Lightweight alternative• REST web services support using Jersey• Embedded servers• Logging and validation• Templating systems• Metrics library
Q&A
