If you are trying to learn groovy and grails like me you should visit http://groovyblogs.org . Really nice aggregator for grails and groovy blogs and posts. But the most important part this site is, it is open-source !!!
Image via Wikipedia Most probably you have management link that enable you clear cache manually ! Then there is something totally wrong in your software/project :) Your software is : Not aware of itself Do not now what it is under going now Do not know how to respond to these operations ...