The first version of this site went live in 2011 to support crowdsourcing of the book.
Hundreds signed up, and we actually got about a hundred who contributed, and we used Recipes from about
half of them in the printed book.
That version was powered by Version 2.0 and 2.1 of JBoss Seam,
an advanced (for its day) web framework for the Java Enterprise.
The site was re-written in 2015 and 2016 to use more modern technologies.
Still powered by Java Enterprise (Java EE): the site uses JPA2, EJB3, JSF2, PrimeFaces 5, etc.
Since Seam was based on JSF1, some of the pages were able to be "translated" at least partly.
Seam is not in use here at all, despite the page extentions being ".seam"; this was used so that links to pages
in the old site would continue to function.