Welcome to another installation of This Week in Spring! This week I'm in beautiful Stockholm, Sweden at the amazing JFokus conference. It's also Shrove Tuesday here in Sweden and the custom is to over-indulge, so as I type this I am eating a Semla. I hope you too enjoy over-indulging on this week's epic roundup!

• the world's worst kept secret is finally announced! We've been developing a reactive runtime for Spring MVC, and you can start to kick the tires! Check out this amazing blog on Spring 5's ambitions for reactive web programming!
• Spring Cloud Stream lead Marius Bogoevici has just announced Spring Cloud Stream 1.0.0.M4 which, among other things, defaults to publish/subscribe semantics, supports a notion of consumer groups, provides a simplified binder SPI, resettable Kafka offsets, and so much more! Check it out!
• the 2.0.0.RELEASE of Spring Data Couchbase just dropped!. I suspect there'll be a blog or something announcing it, but in the meantime, grab the bits and try it out!
• the good Dr. David Syer's added new chapters to the Spring & OAuth tutorial
• I put together a little post on using Activit and Spring Integration together
• our pal Nicolas Frankel has put together a nice post demystifying the power of Spring Boot's autoconfiguration
• if you couldn't make it to SpringOne2GX 2015 to see Brian Clozel and Stéphane Nicoll's presentation on using Spring Boot in the web tier, then you'll love that it's available online
• Oracle Netbean's lead and all-around great guy Geertjan Wielenga and I were talking about integration with Spring Boot and Netbeans and he wrote up his play-by-play on a great Oracle blog
• the Heroku documentation have recently updated to include a expanded discussion on deploying Spring Boot applications
• Our pal Michael Simmons has developed a very useful-looking WRO4J Spring Boot starter
• Dan Vega's just put together a nice little video on how to send email with Spring Boot
• our pal Petri Kainulainen's back at it again with a nice post on getting the required dependencies from Gradle for a Spring Batch application
• I like this Japanese-language post on using the HikariCP from a Spring Boot application and on exposing its metrics
• I love this post from our very own Mark Heckler on Spring Boot for IoT developers. This is the first in a series, so stay tuned!
• great post from Broadleaf Commerce on preventing session hijacking with Spring