Cedric Champeau discusses the concept of traits introduced by Groovy 2.3. Traits look like interfaces, but allow the developer to add both implementation and state into it.
Ari Grant discusses how Facebook is iterating its mobile products, continuing to increase the richness of the content and speed at which it is delivered.
Or Arbel discusses how Yo's platform enables developers and users to communicate using push notifications.
The authors discuss about the lessons learned from all the biggest sites on the internet about how to build scalable and resilient architectures.
Sharan Kalwani presents the history of HPC and the technologies and trends which have contributed to creating the world of big data, covering applications of HPC resulting in big data technologies.
Thomas Risberg introduces the Spring for Apache Hadoop project and discusses integration with Spring XD, batch jobs and external data sources.
Mike Beltzner describes the tools and techniques used to keep Pinterest's platform stable and responsive. Garrett Moon dives into the technology they developed.
Marius Eriksen explains Twitter's experiences with functional programming (with Scala) @ Twitter: where functional techniques worked and where not. Also: how the Scala language has scaled with Twitter
Jafar Husain shows the Reactive Extensions (Rx) library which allows to treat events as collections, how Netflix uses Rx on the client and the server, allowing to build end-to-end reactive systems.
Logan Linn explores the design and implications of an architecture built around immutable data structures using ClojureScript and Om, a ClojureScript interface to Facebook's React.
Aaron Gardner pulls back the covers on the Etsy Search ecosystem and how they got here -- the good, the bad, and the funky.
John Leach explains using HBase co-processors to support a full ANSI SQL RDBMS without modifying the core HBase source, showing how Hadoop/HBase can replace traditional RDBMS solutions.