The document provides an overview of the updates in Spring Boot 2.0, highlighting new features such as infrastructure upgrades, Spring Framework 5 enhancements, and changes in configuration properties. Key topics include reactive programming capabilities, improved Gradle plugin functionalities, and advances in security and metrics management. The document also addresses evolving aspects of Spring Boot, including actuator endpoints and support for Kotlin.

1. A Sneak Peek at Spring Boot 2.0
By Madhura Bhave / Phil Webb
@madhurabhave23 / @phillip_webb
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2. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Agenda
• What’s New
• Infrastructure upgrades
• Spring Framework 5
• What’s Changed
• Configuration properties
• Gradle plugin
• Actuator endpoints
• What’s Evolving
• Security
• Metrics
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3. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
What’s New
• Infrastructure upgrades
• Spring Framework 5
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4. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
What’s New
• Infrastructure upgrades
• Spring Framework 5
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5. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Infrastructure Upgrades
5
8+ 8+
5.23

6. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
What’s New
• Infrastructure Upgrades
• Spring Framework 5
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7. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Spring Framework 5
• Reactive Spring
• Functional APIs
• Kotlin support
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8. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Spring Framework 5
• Reactive Spring
• Functional APIs
• Kotlin support
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9. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Reactive Spring
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😀

10. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Reactive Spring
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😱 🐌

11. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Reactive Spring
Blocking
• Large thread pool required
• Each request gets its own thread
Non-Blocking
• Small thread pool
• Worker threads process events
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12. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Reactive Spring
Servlet Stack
• Servlet container
• Servlet API
• Spring MVC
Reactive Stack
• Netty, Servlet 3.1, Undertow
• Reactive HTTP layer (Reactive Streams)
• Spring WebFlux
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13. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Reactive Spring
13
Mono<T> Flux<T>
Reactive Streams
Project Reactor

14. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ 14
Demo

15. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Reactive Spring
• Non-blocking
• Event driven at the center
• More for scalability than speed
• You can still use Spring MVC
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16. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Spring Framework 5
• Reactive Spring
• Functional APIs
• Kotlin support
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17. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Functional APIs
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RouterFunction<?> route = route(GET("/person/{id}"),
request -> {
Mono<Person> person = Mono.justOrEmpty(request.pathVariable("id"))
.map(Integer::valueOf)
.then(repository::getPerson);
return ServerResponse.ok().body(fromPublisher(person, Person.class));
})
.and(route(GET("/person"),
request -> {
Flux<Person> people = repository.allPeople();
return ServerResponse.ok().body(fromPublisher(people, Person.class));
}))
.and(route(POST("/person"),
request -> {
Mono<Person> person = request.body(toMono(Person.class));
return ServerResponse.ok().build(repository.savePerson(person));
}));

18. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Spring Framework 5
• Reactive Spring
• Functional APIs
• Kotlin Support
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19. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
What’s Changed
• Configuration properties
• Gradle plugin
• Actuator endpoints
19

20. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
What’s Changed
• Configuration properties
• Gradle plugin
• Actuator endpoints
20

21. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Configuration Properties
• Relaxed binding rules stay the same
• Uniform format for reading properties from the environment
• Elements separated by dots
• Must be alpha-numeric
• Must be lowercase
• Hyphen can be used to separate words
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my.foo.hello-world
my.foo.helloWorld
my.foo.hello_world
my.foo.helloworld

22. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Configuration Properties
• Indices in environment variables
MY_VAR_1=a my.var[1]
MY_VAR_1_2=b my.var[1][2]
• Consistent behavior for Collections
• Better types, e.g. Duration “1s” “2m” “5d”
• Origin support
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23. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/ 23
Demo

24. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
What’s Changed
• Configuration properties
• Gradle plugin
• Actuator endpoints
24

25. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Gradle Plugin
•bootRepackage replaced by bootJar & bootWar
• Tasks do not figure out what to do
• Plugin configures the tasks with sensible defaults
• Reacts to other plugins
• Explicit dependency management
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26. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
What’s Changed
• Configuration properties
• Gradle plugin
• Actuator endpoints
26

27. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Actuator Endpoints
• Endpoint annotations
•@Endpoint, @WebEndpoint, @JmxEndpoint
• Tech independent operations
•@ReadOperation, @WriteOperation, @DeleteOperation
• Tech specific extensions
•@EndpointWebExtension, @EndpointJmxExtension
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28. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Actuator Endpoints
• Works with:
• Spring MVC
• Jersey
• Spring WebFlux
• Reactive health indicators
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29. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
What’s Evolving
• Metrics
• Security
29

30. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
What’s Evolving
• Metrics
• Security
30

31. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Metrics
• Auto-configuration for metrics instrumentation by Micrometer *
• Hierarchical metrics replaced by dimensional metrics
• Facade over multiple monitoring systems
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* Introducing Micrometer Application Metrics - (Thursday 10:30am)

32. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
What’s Evolving
• Metrics
• Security
32

33. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Security
• Simpler security auto-configuration
• Auto-configuration backs-off easily
• Adding custom security is easy
• No ordering issues with WebSecurityConfigurerAdapter
• RequestMatchers for static resources and actuators
• Web actuator endpoints have consistent behavior
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34. Unless otherwise indicated, these slides are © 2013 -2017 Pivotal Software, Inc. and licensed under a Creative Commons
Attribution-NonCommercial license: http://creativecommons.org/licenses/by -nc/3.0/
Security
• OAuth 2.0
• Moving to Spring Security 5.0
• Support for multiple client registrations
• Authorization server/Resource server support
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35. Questions?
@madhurabhave23
@phillip_webb
#springone@s1p
https://github.com/mbhave/webflux-demo
https://github.com/mbhave/actuator-demo
https://github.com/mbhave/configuration-properties-demo