Learning about Julia's web stack

Julia's package ecosystem has long provided a variety of libraries for building web apps. Some of the most mature are HttpServer, Mux, WebSockets, and JuliaWebAPI (to name just a few; this list is not exhaustive). But as the ecosystem settled with Julia version 1, a lot of community effort has been put into a newer package, simply known as HTTP. It provides a web server, an HTTP client (which we already used in the previous chapters to fetch the web pages from Wikipedia), as well as various utilities for making web development simpler. We'll learn about key HTTP modules ,such as Server, Router, Request, Response, and HandlerFunction, and we'll put them to good use.

Beginning with a simple example – Hello World...