Madhura Bhave @madhurabhave23 WHAT’S NEW IN SPRING BOOT 2.0 

Agenda •What’s New • Infrastructure Upgrades • Spring Framework 5 • Micrometer Support •What’s Changed • Configuration Properties • Actuator Endpoints • Security 

What’s New •Infrastructure upgrades •Spring Framework 5 •Micrometer Support 

Infrastructure upgrades 8+ 8+ 5.2 3 

What’s New •Infrastructure upgrades •Spring Framework 5 •Micrometer Support 

Reactive Spring •Blocking • Large thread pool required • Each request gets its own thread •Non-Blocking • Small thread pool • Worker threads process events 

Reactive Spring •Servlet Stack • Servlet Container • Servlet API • Spring MVC •Reactive Stack • Netty, Servlet 3.1 • Reactive HTTP layer • Spring WebFlux 

DEMO 

Reactive Spring •Non-blocking •Event loop at the center •More for scalability than speed •You can still use Spring MVC 

What’s New •Infrastructure upgrades •Spring Framework 5 •Micrometer Support 

MICROMETER SUPPORT •Auto-configuration for metrics instrumentation library - Micrometer •Hierarchical metrics replaced by dimensional metrics •Facade over multiple monitoring systems 

DEMO 

What’s changed •Configuration properties •Actuator Endpoints •Security 

DEMO 

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 my.foo.hello-world my.foo.helloWorld my.foo.hello_world my.foo.helloworld 

Configuration Properties •Indices in environment variables • my_foo_1 my.foo[1] • my_foo_1_2 my.foo[1][2] •Consistent behavior for Collections •Better types, e.g. Duration “1s” “2m” “5d” •Origin support 

Properties Migrator org.springframework.boot spring-boot-properties-migrator runtime 

What’s changed •Configuration properties •Actuator Endpoints •Security 

DEMO 

Actuator Endpoints •Endpoint annotations • @Endpoint, @WebEndpoint, @JmxEndpoint •Tech independent operations • @ReadOperation, @WriteOperation, @DeleteOperation •Tech specific extensions • @EndpointWebExtension, @EndpointJmxExtension https://2018.springio.net/sessions/mastering-spring-boots-actuator 

Actuator Endpoints •Works with: • Spring MVC • Spring WebFlux • Jersey •Reactive Health Indicators •Overhaul of the “/actuator/mappings” & “/actuator/trace” endpoints 

What’s changed •Configuration properties •Actuator Endpoints •Security 

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 •Auto-configuration for reactive security 

Security •OAuth 2.0 • Moving to Spring Security 5.0 • Support for multiple client registrations • Authorization Server/Resource Server support https://github.com/spring-projects/spring-security-oauth2-boot 

Links •https://github.com/mbhave/webflux-demo •https://github.com/mbhave/configuration-properties-demo •https://github.com/mbhave/actuator-demo •https://github.com/spring-projects/spring-boot/wiki/Spring- Boot-2.0-Migration-Guide 

Madhura Bhave @madhurabhave23 THANKS!