Spring Boot 2.0 Web Applications Stéphane Nicoll - @snicoll Brian Clozel - @bclozel

Spring Framework 5.0 JDK 8 and JDK 9, Reactive programming with Spring WebFlux 2

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Threading model Not relying on the “1 thread/request” model Using non-blocking IO (see NIO Selectors) 4

Flux and Mono Reactive Streams implementation, Powerful for concurrency and streaming use cases 5

Spring Boot 2.0 Bringing the Spring Boot experience to the Reactive world, Leveraging reactive features in all Spring projects 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/ Smart Meter Applications 7 Aggregator Dashboard ⚡ ⚡ ⚡ ⚡ ' ⚡

#devoxx #springboot Demo - Smart Sensors

Template engine integration How to deal with Flux at the view model level? 9

Thymeleaf 3.0 reactive support Flushing strategies for progressive rendering - “chunked mode” Rendering template fragments as SSE events - “data-driven mode” 10

Spring Data Kay Reactive support for Redis, MongoDB, Couchbase and Cassandra Infinite streams from the datastore with @Tailable 11

#devoxx #springboot Demo - Dashboard

Spring Boot Actuator Works now with Spring MVC, Spring WebFlux and Jersey Unified way to implement custom endpoints 13

Spring Boot Actuator Better output format Separate status endpoint 14

Spring Boot Actuator Simplified Security model 15

Spring Boot Actuator Move to Micrometer Think SLF4J, but for metrics 16 • Instrument without vendor lock-in: • Prometheus • Netflix Atlas • Influx • Datadog • Statsd • Graphite • … • Multi-dimensional metrics

Spring Boot soon in RC phase Check out release notes and our (WIP) migration guide! 17

#devoxx #springboot Demo - Actuator

#devoxx #springboot Thanks! @snicoll @bclozel on Twitter https://gitter.im/spring-projects/spring-boot