Dean Wampler argues that Spark/Scala is a better data processing engine than MapReduce/Java because tools inspired by mathematics, such as FP, are ideal tools for working with data.
Peter Ledbrook discusses the impact of the Java 8 language changes on Groovy applications and if Groovy still provides an edge in terms of developer productivity.
Jeff Beck describes how Grails fits into a larger polyglot architecture and goes through his team's experiences building and maintaining these micro services.
Cedric Champeau tries to answer the question: "Android developers are used to develop applications in Java, so why Groovy, a JVM language, wouldn't be usable for Android development too?"
Jan Machacek demos creating and using reactive APIs in Scala with Spray and Akka.
Robert Martin argues that Clojure is a replacement for C with its simple syntax and minimal semantics.
Opening Night Keynote from SpringOne 2GX 2014. Topics include Spring IO and Microservices, Groovy 2.3 and 2.4 and Grails 3.0 plans.
Mario Aquino discusses the structure and organization of Clojure's Lisp syntax as well as special forms in the language for declaring data structures.
Glen Peterson uses the Expression Problem to compare refactoring in Java, Scala and Clojure, showing how traits minimize changes in Scala when an interface changes and how Clojure avoids some issues.
Timothy Baldridge introduces Clojure’s Core.Async library, presenting the motivation behind the library and examples in Clojure and ClojureScript helpful to decouple subsystems in an application.
Sponsored by Goldman Sachs. Java 8 has Streams, Scala has parallel collections, and GS Collections has ParallelIterables. How well do they perform?
Stuart Sierra discusses various Clojure features: protocols, records, DI, managing startup/shutdown of components, dynamic binding, interactive development workflow, testing and mocking.