Jonathan Worthington explains how invokedynamic works, how he has been using it while porting the Rakudo Perl 6 compiler to the JVM, and its performance impact.
Trisha Gee demoes building a web application using Java, HTML5, Angular.js, Mongo.DB, Groovy and microservices in one hour.
Deepak Giridharagopal discusses "immutable infrastructure", PuppetDB and complex invariants, PuppetDB’s architecture, the experience of bringing Clojure to a Ruby shop and lessons learned from that.
Robert Smallshire explores the disconnect between the dire outcomes predicted by advocates of static typing versus the near absence of type errors in real world systems built with dynamic languages.
Matt Debergalis highlights some of Meteor's components, showing how they work together to dramatically shorten the development cycle, whether you're a team of expert developers or just getting started.
Paul Gross explains how Braintree deals with high availability for their Ruby application.
Baruch Sadogursky discusses creating DSLs which support plugins written both in Groovy or Java, addressing good public API design practices, security, and classpath isolation.