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!