Quite a few enhancements have appeared over recent months in QEWD for easing and simplifying the creation of REST-based services.  It's now even more slick and powerful,  allowing you to very quickly create very high-performance, highly-scalable REST (and Web) services that make use of Cache. I've therefore updated the training presentation deck (Part 31 on developing REST Services with QEWD).  It describes all the new features with worked examples.  See: https://www.slideshare.net/robtweed/ewd-3-training-course-part-31-ewdxpress-for-web-and-rest-services