将可变数量的网址映射到HandleFunc

Question

This is the first time that I attempt to write a small blog using Go (Golang). Right now, I have a small website running with only a few pages. My main contains this.

http.HandleFunc("/about", about)
http.HandleFunc("/contact", contact)
http.HandleFunc("/", homepage)
if err := http.ListenAndServe(":8080", nil); err != nil {
    log.Fatalln(err)
}

My first question is: What is this called? I call it mapping URLs to functions, but my Google results haven't been fruitful with those search terms. Is this called "routing"?

Secondly, my goal is to write a small blog app. I want to use a database to save blog posts and other data. However, mapping URLs to functions like I did above doesn't seem right because there is no way to know what the URL should be until someone makes a blog post. I would want the URL to match the blog post title. In addition, there could be hundreds of blog posts, so writing a bunch of http.HandleFuncs seems unreasonable.

Finally, my question is this: What options are available to solve this obstacle?

Answer 1

The other approach for a "blog app" is a static site generator.
You can find a good example in gohugo (repo GitHub), which means you only have one Handler:

if port > 0 {
    if !viper.GetBool("DisableLiveReload") {
        livereload.Initialize()
        http.HandleFunc("/livereload.js", livereload.ServeJS)
        http.HandleFunc("/livereload", livereload.Handler)
    }
    go serve(port)
}

But more generally, what it is called is a router, and you can see them in this excellent Guide to 3rd Party Routers in Go 2014/11/20:

• Gorilla mux web toolkit
• httprouter
• Pat