Ken Kousen advises Java developers how to do similar tasks in Groovy: building and testing applications, accessing both relational and NoSQL databases, accessing web services, and more.
Joe Rinehart discusses some of the essential security topics for Grails (and Java) Web applications, showing how Grails can make life easier and the pitfalls of attempting to secure highly dynamic code.
Ryan Vanderwerf explains setting up Terracotta and clustering an applications using Ehcache, HTTP Session in Tomcat, and Quartz.
Jim Driscoll shows how to create Napili, a small program accepting user scripts to control a turtle using GroovyShell, the Binding, overriding behavior with set/getVariable and invokeMethod, and more.
Venkat Subramaniam shows how to implement several design patterns, including some GoF ones, using Groovy’s dynamic nature and closures.
Will Buck provides advice for those interested to upgrade their applications from Grails 1.x to 2.x.
Craig Atkinson presents the advantages of using the Geb functional testing library for creating robust and readable tests with both JUnit and Spock, and configuring Geb for testing across multiple browsers.
Burt Beckwith explains the general process of creating a Grails plug-in, the different types of plug-ins, and how to deploy, release and test them.
Burt Beckwith discusses performing transactions in Grails, covering services, customizing transaction attributes (isolation, propagation levels), two-phase commit, using JMS, and testing the code.
Ryan Vanderwerf explains how to create and deploy a Grails application on AWS VPC using various services such as RDS, S3, autoscaling, S3FS, EBS, etc.
Graeme Rocher talks through the latest Async features offered by Grails and how they can be used to create non-blocking REST APIs.
Rob Fletcher explains how to use Vert.x, WebSockets, continuous unit testing and headless end-to-end testing to create one-page applications in Grails.