利用Go语言开发上门做菜系统的订单查询功能有哪些优势？

package main

import (
    "encoding/json"
    "fmt"
    "log"
    "net/http"
)

type Order struct {
    ID      int    `json:"id"`
    Customer string `json:"customer"`
    Dish     string `json:"dish"`
}

var orders []Order

// 查询订单处理函数
func getOrderHandler(w http.ResponseWriter, r *http.Request) {
    id := r.URL.Query().Get("id")
    var order Order
    for _, o := range orders {
        if o.ID == id {
            order = o
            break
        }
    }
    if order.ID == 0 {
        http.NotFound(w, r)
        return
    }
    json.NewEncoder(w).Encode(order)
}

func main() {
    orders = []Order{
        {ID: 1, Customer: "Alice", Dish: "Spaghetti"},
        {ID: 2, Customer: "Bob", Dish: "Pizza"},
        {ID: 3, Customer: "Charlie", Dish: "Sushi"},
        {ID: 4, Customer: "David", Dish: "Burger"},
        {ID: 5, Customer: "Eve", Dish: "Steak"},
    }

    http.HandleFunc("/order", getOrderHandler)

    fmt.Println("Server listening on port 8080...")
    log.Fatal(http.ListenAndServe(":8080", nil))
}