Hi,
Groovy has inherently the same scalability characteristics as
Java (note that scalability does not imply the same performance characteristics).
I have worked in Groovy Projects that outperformed C++ competitors but for you, only publicly visible projects may count. Recently, Sky, the big british TV company ported their web presence over to Grails, Groovy's web application platform. Read more under
http://graemerocher.blogspot.com/2008/10/skycom-relaunches-written-in-grails.html cheers
Dierk