Conhecendo o Ratpack
Dan Woods apresenta o RatPack na SpringOne 2GX: um framework pouco falado aqui no Brasil e que vale muito à pena conhecer – http://www.infoq.com/presentations/ratpack-2015
Três excelentes apresentações sobre Grails na InfoQ norte-americana
Sugestão de Rodrigo Muller
Restfull Grails – http://www.infoq.com/presentations/grails-3-rest
Grails 3.x inside and out – http://www.infoq.com/presentations/grails-3-x-inside
Microservice Architecture with Grails – http://www.infoq.com/presentations/microservices-grails-2015
IntelliJ IDEA 15 liberado – com suporte a Grails 3
Mais detalhes neste vídeo: https://www.youtube.com/watch?v=7FiOmtfbOSI
Entenda o compilador do Groovy
Deep dive into the Groovy compiler – by Cédric Champeau – http://melix.github.io/s2gx-deepdive-groovy-compiler
Debug com Groovy via linha de comando
How to Debug a Groovy Script From Shell – by Sandra Parsick – http://blog.sandra-parsick.de/2015/11/02/how-to-debug-groovy-script-from-shell