This shows using the cache in grails 4.0.13 (https://docs.grails.org/4.0.13/guide/single.html).
The grails server technology is used as REST-backend for the vr- and e-learning-platform https://vrdoro.com.
Clone the repository.
The workspace is prepared for using eclipse with groovy nature with Groovy Development Tools Version 4.8.0-Release.
Use gradle eclipse to prepare eclipse for your workspace.
Use:
- grails run-app or
- gradle bootRun
Go to url http://localhost:8080/hello/index with you browser.
All is implemented in the HelloController.
In a Grails 5.3.2 project the HelloController works without changes.