How production ready or mature are Racket libs for creating CRUD web services? skimming through the Racket website one can see Racket has the basics, a http server and a library for interacting with databases like postgresql, as someone relative new to programming/webdev, would I face to much "reinvent the wheel" versus Clojure or Javascript?
Depends what you're doing. It doesn't have the depth of libraries of the JVM or JS, so there'll be lots of "oh, can't use that technology" or "is this 3-year-old unmaintained library still going to work with Mongo?" moments.