Paul King reviews some of the most useful of the Groovy built-in AST transformations. He talks about the internal workings of AST transformations and how to write your own.
Yann Cébron and Stéphane Nicoll take a look at some features from IntelliJ IDEA that help one get started with Spring Boot, dealing with configuration management and be more efficient.
William Markito Oliveira and Fred Melo discuss the architecture and implementation details of a stock prediction solution built entirely on top of open source code and some R and a web interface.
Ken Kousen talks about Geb, which makes it easy to automate browser-based applications. Geb is based on the Spock testing framework, providing a straightforward syntax and easy execution model.
Paul King reviews the features in Groovy which make it easy to work with databases - Groovy SQL, datasets -, and working with NoSQL databases such as MongoDB and Neo4J.
Ray Tsang shares his experience in writing a custom metrics collector plus an autoscaler using Groovy and Spring Boot, deployed as containerized microservices in Kubernetes.
John Blum and Luke Shannon introduce Pivotal GemFire along with the open source offering, Apache Geode. They demonstrate how to effectively build highly scalable applications with GemFire/Apache.
Stephane Maldini and Rossen Stoyanchev discuss Reactive Streams and Reactive Extensions, and demo introducing the basic concepts in composition libraries using RxJava and Reactor.
Ken Kousen demonstrates how one can add Groovy to Java applications and simplify his development job immediately.
Ken Kousen reviews the basic concepts of the Groovy Parallel Streams framework and demonstrates communicating sequential processes, promises, dataflow concurrency and concurrent collection processing.
Paul King presents examples of Groovy and its application: DSL, dynamic typing, extensible static type system, Android programming, concurrency, functional, frameworks and tools.