An excellent intro, easy to follow. Reading this, and comparing it to the (Java) Spring/JPA/ORM stuff we're using at work is startling. Obviously, this demo has no security or business logic in it, just bare-bones HTTP <-> DB. However, it's nice to see code that is between 1/2 and 1/10th the size of the equivalent "ENTERPRISE!!!" silly walk.
My first gig back in the mid 80s was also an interpreted language, so running (a much smaller piece of) code to check it doesn't scare me :-)