Golang入门指南 - 压测和调优

[xpzouying]

main.go代码如下，演示如何对下列代码进行测试、压测及调优。

package main

import (
	"fmt"
	"log"
	"net/http"
	"regexp"
)

var counter = map[string]int{}

func handleHello(w http.ResponseWriter, r *http.Request) {
	color := r.FormValue("color")
	if match, _ := regexp.MatchString(`^[a-zA-Z]+$`, color); !match {
		http.Error(w, "Optional color is invalid", http.StatusBadRequest)
		return
	}

	name := r.FormValue("name")
	counter[name]++

	w.Header().Set("Content-Type", "text/html; charset=utf-8")
	w.Write([]byte("<h1 style='color: " + color +
		"'>Welcome!</h1> <p>Name: " + name + "</p> <p>Count: " + fmt.Sprint(counter[name]) + "</p>"))
}

func main() {
	http.HandleFunc("/hello", handleHello)
	log.Fatal(http.ListenAndServe(":8080", nil))
}