As I always say, I hope @jeffscottbrown and the rest of OCI keep doing these Grails quick casts. They bring a lot of value and give light to Grails good practices.
You will learn why you should use GrailsConfigurationAware or @Value annotation instead of calling grailsApplication directly in your controller and service methods. That way, you will avoid retrieving the config value every time method is invoked.
Checkout the companion Blog Post.
In this post, @ericfosterjohns talks about how to use Spring Boot actuators to monitor your Grails apps.
Actuators provide data on your running application through JSON endpoints.
He talks about how to enable, extend and visualise them with the help of Dropwizards metric library and the Actuator UI Plugin.
In the previous link we learn about Spring Boot Actuators and how we can leverage them in Grails 3.
Learn now about UI Actuator plugin by @dhirajmahapatro for Grails. It brings life to your application’s health and metrics data. Checkout this awesome 30s demo video