The final month of the year is coming and you might still have some training budget left to start the year 2014 off as a Spring master. To help you out we have made a discount available for all of our developers. Simply use the code springtime in the referral code field when registering for a Spring training* to get a 20% discount on the list price. Our full schedule for December is:

Core Spring

Australia & Asia

• 02 - 05 December: Core Spring in Bangalore
• 02 - 05 December: Core Spring in Melbourne
• 03 - 06 December: Core Spring in Kuala Lumpur
• 09 - 12 December: Core Spring in Hong Kong
• 09 - 12 December: Core Spring in Wellington
• 16 - 19 December: Core Spring in Sydney
• 17 - 20 December: Core Spring in Pune
…

We are happy to announce the Spring for Apache Hadoop 1.0.2 GA and 2.0 M2 milestone releases.

Both of these releases provide bug fixes, upgraded Spring project versions and support for the new Pivotal HD 1.1 release. The 1.0.2 release adds support for the new Hadoop 2.2 stable release. The 2.0.0.M2 release provides support for CDH4 YARN clusters and an improved implementation for the HdfsResourceLoader (this implementation will be back-ported to the next 1.0.3 GA release).

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

The Spring XD team is pleased to announce that Spring XD 1.0.0 Milestone 4 is now available for download.

Spring XD makes it easy to solve common big data problems such as data ingestion and export, real-time analytics, and batch workflow orchestration. This release includes several notable new features:

• Batch Processing UI
• Improved Type Conversion
• Composite Modules
• Improved DSL parsing and Tap functionality (Note: breaking syntax change)
• New sources: Reactor based syslog, tcp-client
• Expression based processors can invoke a pre-registered JSON Path function.
• Pre-defined Batch jobs for HDFS to JDBC, HDFS to MongoDB, Files to HDFS, and Files to JDBC
• New commands for listing available modules and their definition.
• Deployment Scripts for EC2 in new project.
• Support for Pivotal HD 1.1
• Shell access to HDFS via WebHDFS protocol
…

Recorded at SpringOne2GX 2013 in Santa Clara, CA.

Speaker: Ashley Puls, NewRelic

Operations teams tend to get nervous when debugging tools are installed on production systems. This is understandable as most people have had at least one debugging tool crash a system. However, are there tools that can be run in a production environment? This talk will cover methods and tools that can be used to uncover and resolve performance problems arising in Java web applications that use the Spring Framework. This talk will touch on a few common problems such as slow SQL, slow web page load times, blocked threads, and exceptions in the code. It will use a variety of diagnostic tools to examine these problems including log files, jmap, jvisualvm, and New Relic. Finally, the talk will evaluate the use of these tools in a production environment, separating them into what can and cannot be realistically used in live production web applications.

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Speakers: Matt Stine

Readers of Josh Bloch's "Effective Java" are sometimes perplexed when they reach Item #15: "Minimize Mutability." If we are to minimize mutability, then obviously we must maximize immutability. While all Java programmers utilize immutable objects every day (e.g. java.lang.String), when asked to create our own immutable classes, we often hesitate. However, if we push through this hesitation, we'll reap the benefits of simpler reasoning about program correctness, free thread safety, and other benefits.

One of the primary issues faced by enterprise Java programmers seeking to…

Speaker: Jon Brisbin

Reactor is a succinct and powerful foundational library for building reactive, fastdata applications on the JVM. Although it is part of the Spring IO platform, the core Reactor libraries have no dependency on Spring. Above the core library, there's direct support for the Disruptor via the high-speed Processor abstraction which provides a Reactor API over the RingBuffer, first-class support for the high-performance JavaChronicle persistent message-passing library through the flexible PersistentQueue abstraction, first-class support for Groovy closures and @CompileStatic…

Welcome to another installment of This Week in Spring! This week, I'm in Antwerp, Belgium talking to Spring, RabbitMQ, Tomcat, Redis, and Cloud Foundry users at Devoxx Belgium. We at Pivotal have a booth and are showing Spring Boot and giving away t-shirts. Be sure to stop by and say hi!

1. Spring Boot 0.5.M6 is now available! The new release is full of amazing new features and you can use it from gvm and Homebrew, too.
2. The Reactor project 1.0 has just been released! Project lead Jon Brisbin has done an amazing job with the new release and the blog is full of win, so be sure to check it out.

• In that vein, I put together a post introducing Spring Boot M6's new awesome SSH support, complete with sample code and a screencast.
• Spring Framework 3.2.5 is now available!
• the replay of the webinar, Inside Cloud Foundry - an Arcitectural Review from SpringOne2GX 2013 is now online!
• Today we took the wraps off of Pivotal One - the cohesive set of Pivotal technologies that aims to significantly accelerate how companies build big data apps - and Pivotal CF, the turnkey, integrated version of Cloud Foundry. Definitely exciting news and this all, of course, bodes well for Spring users who want an open, portable cloud! I liked Wired's coverage of the event…

I'm happy to announce that Reactor, a powerful foundational library for building reactive, fast data applications on the JVM has reached GA!

What is Reactor and why should I care?

Reactor provides the necessary abstractions to build high-throughput, low-latency--what we now call "fast data"--applications that absolutely must work with thousands, tens of thousands, or even millions of concurrent requests per second.

You should care about Reactor because modern applications with non-human consumers--like mobile phones and the apps that run on them--generate more data than traditional thread-per…

Spring Boot 0.5.0.M6 has been released and is now available in the Spring repo. Instructions for installing and using are on the project website or in github. There are loads of updates in this release, including:

• Auto-configuration reports to let you know what Spring Boot is doing on your behalf
• Remote shell support via CRaSH
• Support for JDK 8
• A new Aether based @Grab engine
• Lots of bug fixes

Here is a quick example that demonstrates the remote shell and auto-configuration report:

@Grab("spring-boot-starter-shell-remote") 
@Controller 
class MyRemote {
}

When you run this application using spring run example.groovy you should see…