Serving static site on app engine with golang

README.md

Put all your static files in /static directory. If you put index.html into /static, it will be served up as welcome file.

app.yaml

application: helloworld
version: 1
runtime: go
api_version: go1

handlers:
- url: /.*
  script: _go_app

hello.go

package hello

import (
	"fmt"
	"net/http"
)

func init() {
	http.HandleFunc("/ping", ping)
	http.HandleFunc("/", handler)
}

func handler(w http.ResponseWriter, r *http.Request) {
	http.ServeFile(w, r, "static/"+r.URL.Path)
}
func ping(w http.ResponseWriter, r *http.Request) {
	fmt.Fprint(w, "pong")
}

Using this approach will not use CDN and the benefits associated with it - faster response, less traffic on your instances