Having just announced a record breaking quarter, Azul Systems are open sourcing a considerable part of their intellectual property under GPLV2, as part of a major new initiative to try and improve the performance of managed code on commodity platforms.
The strong correlation between heap size and garbage collection pause time is becoming one of the major limitations to Java application scalability, and a great deal of R&D effort is going into trying to remedy the situation. InfoQ talked to Dr. Cliff Click, former architect and lead developer of the HotSpot Server Compiler and now chief JVM Architect at Azul Systems, about Azul's solution.
Oracle principal engineer and former Sun employee Mark Reinhold talks about Oracle's plans to merge the Hotspot and JRockit JVMs.
The long-awaited beta for the new Scala version 2.8 has finally been released. It includes many new features, like for example a redesigned collections library, named and default arguments, and a much improved Eclipse IDE.
Sun's Java SE team recently released the Milestone 5 build of JDK 7. This was expected to be a feature complete release of Java 7 but is some way short of that. InfoQ takes a look at what has been added and some of the major features still missing.
A new intermediate representation (IR) for JRuby code enables many optimizations and could bring the next performance boost. InfoQ talked to Subbu Sastry who works on the IR.
Charles Nutter talks about his two new languages for the JVM: Duby and its dynamic cousin Surinx.
The Swing Application Framework will not make it into Java 7, though a number of forks have subsequently sprung up to continue its development. Plans for another much requested feature, CSS-based styling for Swing components, have also been abandoned.
JRuby 1.4 is coming up with 1.8.7 support and improved Java integration. First builds that bundle JRuby and MLVM are available. Also: JRubyConf's program has been announced - and some more seats are available.
Excelsior LLC recently released the latest version of Excelsior JET which now prevents the decompilation and unauthorized alteration of Eclipse RCP applications.
Philipp Haller and Martin Odersky introduce a type system that enables safe massage transfer in Scala actors. Formalized as an extension of the EPFL Scala compiler, “Object Capability Types” system, based on capability checking and external uniqueness, enforces race safety without sacrificing performance and removes significant limitations on message shape imposed by existing approaches.
Scala has been receiving much attention lately as a possible candidate to replace Java in the future. James Strachan creator of Groovy advocates in favor of Scala as James Gosling, creator of Java and Charles Nutter JRuby Core Developer, have done in the past.
Evan Weaver, Lead Engineer in the Services Team at Twitter, who’s primarily job is optimization and scalability, talked about Twitter’s architecture and especially the optimizations performed over the last year to improve the web site during QCon London 2009.
JRuby 1.3 is now available, bringing performance improvements and compatibility with Google AppEngine. Work on other improvements is continuing and a first version of the ruby2java compiler is now available. Also: InvokeDynamic support is making it's way into the builds for the next Java version.
A couple of days ago InfoQ posted an article about the fact that the release notes for G1 in the latest Java update, mandated that it was to be used in production only by organizations with a Sun support contract. Following the debate and the reactions that where raised in the community, Sun has explicitly updated the release notes and has removed the controversial clause.
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