Welcome to another installment of This Week in Spring! It's been a busy week for all of us on the Spring team, as you're about to see! I've just finished my presentation at the epic DevNexus show and now I'm off to visit customers in Hartford and Los Angeles before making my way to the epic ConFoo conference in Montreal, Canada. If you're in the area, be sure to ping me and say hi!

We've got a lot to cover, so let's get to it!

• Reactor project lead Stephane Maldini just announced Reactor 2.5: A Second Generation Reactive Foundation for the JVM. This is a huge part of our continued efforts to better support reactive workloads with Spring.
• We've added a new language, Kotlin, to the Spring Initializr! To learn more check out this great post by Sebastien Deleuze on Developing Spring Boot applications with Kotlin
• Spring Integration and Spring AMQP lead Gary Russell's just announced Spring AMQP 1.6.0 Milestone 1 (and 1.5.4) Available
• Spring REST Docs lead Andy Wilkinson's just announced Spring REST Docs 1.1.0.M1
• last week, Spring Data Couchbase 2.0 went GA, and this week I'm pleased to share a guest post from project lead Simon Baslé introducing Spring Data Couchbase 2.0
• I threw together a look at Distributed Tracing with Spring Cloud Sleuth and Spring Cloud Zipkin
• Spring Data lead Oliver Gierke has just announced Spring Data Release Train Hopper M1 Released
• Webinar on Stormpath and Spring Boot Authentication on this thursday - not too late to register!
• Join Oracle's Geertjan Wielenga on Thursday Feb 25th for a Webinar on NetBeans and Spring Boot
• SpringOne2GX 2015 replay: Federated Queries with HAWQ - SQL on Hadoop and Beyond
• SpringOne2GX 2015 replay: Intro to Spring Boot for the Web Teir
• SpringOne2GX 2015 replay: Behind the OSS curtain - How we manage Spring
• SpringOne2GX 2015 replay: Developing cloud-native applications with the Spring Tool Suite
• project lead Rob Winch has just announced Spring Session 1.1.0 RC1 Released
• Spring framework lead Juergen Hoeller has thrown up a note to share his speaking itinerary in Vienna to Riga and London
• We have adopted a Contributor Code of Conduct across all of our projects
• this Geowarin post on using Spring Boot and RethinkDB was pretty interesting indeed
• Brian Hannaway put together a very nice guide on developing (and testing!) Spring-based REST APIs
• our pal K. Siva Prasad Reddy is back at it again, this time with a post on how he created a Spring Boot starter for Twitter4J