The Spring Blog

On behalf of the community, I am pleased to announce that the Milestone 1 (M1) of the Spring Cloud Finchley Release Train is available today. The release can be found in Spring Milestone repository. You can check out the Finchley release notes for more information.

Notable Changes in the Finchley Release Train

Finchley is based on the Spring Boot 2.0.0 line. Finchley.M1 is based on Spring Boot 2.0.0.M2. This is largely a compatibility build with no new features with the exception of Spring Cloud Gateway. Finchley will follow Spring Boot’s milestones and release candidates with a corresponding Finchley release soon after. General Availability is targeted for after Spring Boot 2.0 GA, likely in Dec. 2017.

We are pleased to announce the Spring for Apache Hadoop 2.5.0 GA release.

The 2.5 version is primarily a bug fix and version upgrade release.

See the release changelog for details.

We continue to provide version specific artifacts with their respective transitive dependencies in the Spring IO milestone repository:

• 2.5.0.RC1 (default - Apache Hadoop stable 2.7.3)
• 2.5.0.RC1-cdh5 (Cloudera CDH 5.10)
• 2.5.0.RC1-hdp26 (Hortonworks HDP 2.6)

We discussed the future of the Spring for Apache Hadoop Project in the 2.5.0 RC1 announcement.

Spring Cloud Function is a new project with the following high-level goals:

• Promote the implementation of business logic via functions.
• Decouple the development lifecycle of business logic from any specific runtime target so that the same code can run as a web endpoint, a stream processor, or a task.
• Support a uniform programming model across serverless providers, as well as the ability to run standalone (locally or in a PaaS).
• Enable Spring Boot features (auto-configuration, dependency injection, metrics) on serverless providers.

Welcome to another installment of This Week in Spring! If you’re in the US, then let me wish you a happy 4th of July! We’ve got a lot to cover so let’s get to it!

• Spring Data ninja Thomas Risberg has just announced Spring Cloud Data Flow 1.2.2. This new version improves compatibility with Spring Boot 1.5.4 which in turn brought in a new version of Spring Data.
• The Spring Framework Guru web portal has an interesting look at what’s new in Spring Framework 5! Check it out!
• I liked this post on Bozho’s Tech Blog on setting up the epic Spring Boot Admin for monolithic applications, eschewing some of the more common, albeit more complex, setups.
• our friend Petri Kainulainen is back at it again this time with a new newsletter that looks to capture discussions of testing in Java. This seems like a no-brainer thing to follow for interesting content! Nice job, as usual, Petri!
• I love this nicely illustrated look at what constitutes a Spring bean.
• Baeldung has a nice Spring Cloud tutorial that’s worth checking out.
• I was very honored to be nominated as one of the top java influencers by JAX 2017 along with Spring Data lead Oliver Gierke. This is an honor. Thank you. :)
• don’t miss reactive web ninja Arjen Poutsma’s talk introducing functional reactive Spring!
• Speaking of reactive, this upcoming webinar on reactive Spring Data Couchbase looks promising! - check it out!
• I liked this demo of a (reactive) Spring WebFlux application that connects to Twitter’s streaming API

On behalf of the team, I am pleased to announce the general availability of Spring Cloud Data Flow 1.2.2.

Local Server: Quick Start, Getting Started Guide

Due to the popular demand from the community, the primary goal of this maintenance release is to bring Spring Boot 1.5.4 compatibility in Spring Cloud Data Flow.

• Since it includes refactoring efforts to adapt to a bug fix introduced in a Spring Data maintenance release that is pulled in by Spring Boot, this is not a simple version upgrade.
• As reported by the community, a side effect of this update surfaced pagination problems in the clients. It has been reworked both in the client and server-side.

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 compatability, 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 perse.
• 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

New release candidate for Spring for Apache Hadoop 2.5

We are pleased to announce the Spring for Apache Hadoop 2.5 release candidate release.

The 2.5 version is primarily a bug fix and version upgrade release.

See the release changelog for details.

We continue to provide version specific artifacts with their respective transitive dependencies in the Spring IO milestone repository:

• 2.5.0.RC1 (default - Apache Hadoop stable 2.7.3)
• 2.5.0.RC1-cdh5 (Cloudera CDH 5.10)
• 2.5.0.RC1-hdp26 (Hortonworks HDP 2.6)

Hi Spring fans and welcome to another installment of This Week in Spring! This week I’m in Krakow, Poland for the epic Devoxx PL event and then it’s off to Luxembourg for the VoxxedDays Luxembourg event! If you’re around, don’t hesitate to say hi

• Spring Framework lead Juergen Hoeller just announced Spring Framework 5.0 RC2. The new release is a major revision of RC1, refactoring the reactive support and path pattern parsing. It introduces JSR 305 based @Nullable / @NonNullApi Spring annotations into the codebase.
• Spring Data Release Train Kay M4 Released - Spring Data ninja Mark Paluch just announced Spring Data Train Kay M4, packed with new features and updates. Get the bits now!
• Spring IO Platform Athens-SR6 - Spring IO Platform lead Andy Wilkinson has just announced Spring IO Platform Athens-SR6, available from repo.spring.io and Maven Central. The new maintenance release includes Spring Boot 1.4.7, Spring Framework 4.3.9, Sspring Integration 4.3.10, Spring REST Docs 1.1.3, Spring Seurity OAuth 2.0.14, Spring Web Flow 2.4.5, and Spring Cloud Connectors 1.2.4, among many other things.
• Spring IO Platform Brussels-SR3 - Not one to rest on his laurels, Andy also released Spring IO Platform Brussels-SR3, which includes updates a large number of supporting libraries. Get the bits now!
• Spring Boot 2.0.0.M2 Available Now - Spring Boot ninja Stéphane Nicoll just announced Spring Boot 2.0M2, following on Spring Framework RC2.
• Spring Session 2.0.0 M2 Released - Spring Session lead Rob Winch just announced Spring Session 2.0.0.M2. The new release ensures compatability with Spring Framework 5.0.0.RC2 and Spring Data Kay-M4, both baselines for the new release.
• Spring Security lead Rob Winch just announced Spring Security 5.0. The new release includes improved reactive support Java configuration, and improved WebClient test support.
• Greg Turnquist, now lead of Spring Session MongoDB, has just announced 2.0.0.M1
• 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
• Jagdish Mirani looks at how HCSC uses Gemfire to help integrate legacy applications) in this post.
• Mark Heckler looks at filtering HTTP requests by header type in this concise post
• Get preview chapters of Duncan Winn’s new book on Cloud Foundry from DynaTrace
• TechCrunch looks at Cloud Foundry’s dominance in the enterprise - One of the things I loved was the insight that more than half of the Fortune 500 are using Cloud Foundry - wow!
• Tim Schimandle continues his series in this look at integrating an Angular 4 front end with his Spring Cloud backend.
• Tim Schimandle also wrote a nice introduction to distributed tracing with Spring Cloud Sleuth and Zipkin in this post
• Tim Schimandle looks securing Spring Cloud Services
• Tim Schimandle looks at how Spring Cloud applications bootstrap in this nice post
• Mark Heckler does a great job introducing the fantastic Spring Boot Actuator integrations in Pivotal Cloud Foundry 1.1