This Week in Spring: Dealing With Data, Kotlin, XML, and More!

Hi, Spring fans, and welcome to another installment of This Week in Spring! This week, I’m in Chicago, New York City, and Denver talking to Pivotal customers. We’ve got a lot of good stuff to look at this week so let’s get to it!

• Spring Data ninja Thomas Risberg just announced Spring for Apache Hadoop 2.5.0.RC1. The new release is primarily a bugfix. The post looks forward to Spring for Apache Hadoop 3.0, which will be based on Spring Boot, a Java 8 baseline, Spark 2.0 integration, and Spring Batch 4.0 readers and writers.
• Spring Data ninja Mark Paluch looks at a lot of the new features in Spring Data Kay including support for fluent MongoOperations, Kotlin, smarter MongoDB collation, Java 9 compatibility, and so much more.
• I liked Arnold Galovics’s post on how to configure a DataSource proxy in Spring Boot.
• Kotlin’s hidden costs - Benchmarks - Renato Athaydes.
• Bytecode generation on the JVM and Kotlin: This is a deep-dive into the basics of how the Kotlin-language interacts with the JVM and the compiler. Worth a read if you’re diving into Kotlin (as I have been for the last few years) even if the post doesn’t have a lot to do with Spring per se.
• A Spring Boot application that talks to Ethereum or Quorum network: This was an interesting Spring Boot application that talks to an Ethereum or Quorum network.
• In Redmonk’s latest look at Java language and framework popularity, Spring and Spring Boot seem to be doing quite well!
• Mark Heckler looks at serving XML in REST APIs in this useful post.
• I liked this post on using the Quartz scheduling API. It starts from the basic usage and eventually gets all the way through to the Spring Boot experience. Nice!
• I liked this presentation on the basics of Chaos Engineering by Tammy Butow.
• What if an application could automatically repel attackers by rotating its access credentials every day, thereby making every stolen password useless in a short amount of time? That’s the idea behind CredHub, a new feature introduced for Pivotal Cloud Foundry today. Read the rest of this VentureBeat article for more.
• Dormain Drewitz chimes in with a look at some Secrets of successful Cloud Foundry users from the recent Cloud Foundry Summit.