Sessions tagged with 'jvm'

Akka is using the Actors together with STM to create a unified runtime and programming model for scaling both UP (multi-core) and OUT (grid/cloud). Akka provides location transparency by abstracting away both these tangents of scalability by turning them into an ops task. This gives the Akka runtime freedom to do adaptive automatic load-balancing, cluster rebalancing, replication & partitioning

Meet Clojure, a new dynamic language for the JVM, with innovative ideas for state management and concurrency.

You've heard about NoSQL. You've heard about the Cloud. What if you could spin up something like HBase in a couple minutes and try out both at the same time. By the end of this session, you'll learn how to do just that, in a way portable across several NoSQL projects and dozens of compute clouds.

Java 7 is out in 2 days and now is the time to do some old school hacking with it! We've picked some existing open source projects that could benefit from some Java 7 spring cleaning and you're going to help us wield the feather duster. This session has limited space for 15 attendees on a "first come, first served" basis.

Twitter is the largest Ruby on Rails installation on the web right now -- however, we have been moving from solely hosting Rails applications to a mixed Rails and JVM deployment. This migration has been ongoing for a few years at Twitter and we now run several back-end, high-throughput, and critical components on the JVM.

Multicore processors are on every desk now. How are we going to make use of the extra power they provide? A promising solution is parallel programming using collections. Programing by transforming and aggregating collections is simple and powerful, and can be parallelized well. In this talk I will describe the design principles behind the Scala collections framework which implements these ideas.

Come hear a lively overview of the new features in JDK 7, including the language changes of Project Coin, the filesystem and other I/O features from NIO.2, and the new invokedyamic JVM instruction.

JRuby is just a Ruby implementation for the JVM, right? Wrong! JRuby has gone well beyond other language implementations by supporting arbitrarily-encoded strings, native library calls, reloadable applications, and much more. This talk will explore how JRuby is pushing the JVM and Java platform in new directions, and how you can take advantage of this new power.

You've written applications for the JVM, using various frameworks and maybe even various languages. You understand how to rig up the CLASSPATH, get .class files to load, compile source, and set up an IDE. But you've always wanted a better understanding of the plumbing underneath. How does JVM bytecode work? What happens to bytecode after you hand it off to the JVM?

Over the past couple of years, Clojure has made a significant impact in the JVM language world. For those of you who are afraid a dynamic language on the JVM won't be fast enough to solve your problems, this is your chance to see Clojure shine!

Learn how to build a simple JVM compiler with Scala's parser combinators and Apache's BCEL.

Covers the benefits and drawbacks of using NoSQL databases. Uses a use case from the book POJOS in Action to compare and contrast popular NoSQL databases – Redis, SimpleDB, MongoDB, and Cassandra.

Apache Cassandra is a powerful new distributed database system that, when used correctly, provides a simple framework for managing large, rapidly changing, and/or high value datasets. But Cassandra is a bit rough around the edges. In particular, the system has a reputation for being unforgiving when misconfigured or burdened with unusual work loads.

A look at using Jenkins for continuous integration, focusing on three different use cases at three different companies, along with a general update on the state of the project.

In the bewildering array of Java and JVM frameworks, Grails is emerging as a standard choice in environments ranging from startups to the enterprise. It's a full-stack solution build on rock-solid components, fully relying on convention over configuration, and using the best application language the JVM has yet seen: Groovy. This is the place to be for web apps on the JVM.

The best way to learn a new language happens to be the best way to program - with a test. Learn test-driven development in Scala with this introductory presentation to some of Scala's most popular tools like SBT, Specs, ScalaTest, Borrachio, and Scala Check.

New languages, work environments, technologies, and devices. Clouds roll in bringing new rules. Is open really the source of the future? If the future is now, what comes later? Java developers thread on a fine line between working standards and bleeding edge science-fiction experiments. What are the possibilities for the future?

Starting in 2006, portions of the JDK code base were released under open source, starting the OpenJDK effort. Today OpenJDK 6 derived binaries are found in most Linux distributions and OpenJDK 7 is being used for the reference implementation of Java SE 7. Learn about the ongoing work in OpenJDK 6, hear about the new features in JDK 7, and get an overview of the functionality expected in JDK 8.

The power of enterprise Java is now available through the expressiveness of Ruby. More and more projects are suited to new technologies and frameworks such as Ruby on Rails. Using TorqueBox, a team's members can leverage their knowledge, investments, skills, and trust in Java while exploring the cutting edge of new development models.

Keynote by Raffi Krikorian, developer, Twitter.

Today's world of parallel and distributed computing poses hard new challenges for software development. A rapidly increasing number of developers now have to deal with races, deadlocks, non-determinism, and we are ill-equipped to do so. How can we keep things simple, in spite of the complexity of the underlying runtimes?