Arjen Poutsma discusses programming in Scala with SpringSource: Configuring a Scala bean, Scala collections, Using Spring templates and transactions in Scala, and details the Spring Scala project.
Noel Weichbrodt summarizes the retrospectives his team has had for the last 18 months regarding using DSLs written in Scala and Lift for a GIS application.
Nikita Ivanov shows adding real-time capabilities to Hadoop through a demo application streaming word counting on a 2-nodes cluster.
Nilanjan Raychaudhuri presents some of the asynchronous techniques (Comet, HTTP Streaming, WebSockets, Server events) and frameworks (Asyn servlets, vert.x, Play) for building large web applications.
Jamie Allen explains some of the terminology encountered by Scala developers and not only: OO features, pattern matching, functional programming, actors, futures, tuples, implicits, type theory, etc.
Geoff Reedy informs on the current status of a LLVM backend for the Scala compiler project he’s working on, detailing on its design and implementation.
Jan Machacek introduces writing Scala applications to Spring developers, demoing using Akka actors with mix-in composition, higher-order functions, higher-order kinds, and REST API.
Jonas Bonér explains solving scalability issues, including adaptive automatic load-balancing, cluster rebalancing, replication and partitioning, with Akka 2.
Amanda Laucher and Paul Snively debate solving problems through types and tests using different approaches.
Graham Tackley shares the lessons learned running The Guardian website on Java, and why they decided to switch to Scala and how it helps them.
Sadek Drobi presents the architecture of the Play2 framework, a framework helping developers creating web applications in Java and Scala.