os/signal package in GoLang may not be frequently used but it provides some good features like Shutdown() which can be used to gracefully shutdown a running HTTP server.func (srv *Server) Shutdown(ctx context.Context) errorWith this function, there is no need to use third party library to gracefully shutdown HTTP server. How is it being used?package mainimport ( "context" "fmt" "net/http" "os" "os/signal" "time")func main() { server := http.Server{ Addr: ":8080", } http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { time.Sleep(time.Second * 10) fmt.Fprint(w, "Hello world!") ...