Go语言bytes.makeSlice导致内存泄漏：如何避免服务器端大内存占用？

package main

import (
    "bytes"

    "github.com/gofiber/fiber/v2"
    "github.com/gofiber/fiber/v2/middleware/pprof"
)

func main() {
    app := fiber.New()
    app.Use(pprof.New())
    app.Get("/test", func(c *fiber.Ctx) error {
        buffer := bytes.NewBufferString("")
        for i := 0; i < 1000000; i++ {
            buffer.WriteString("123")
        }
        return c.SendString(buffer.String())
    })
    app.Listen(":3000")
}

package main

import (
    "fmt"
    "io"
    "net/http"
    "sync"
)

func main() {
    var wg sync.WaitGroup
    for i := 0; i < 500; i++ {
        wg.Add(1)
        go func() {
            defer wg.Done()
            resp, err := http.Get("http://localhost:3000/test")
            if err != nil {
                fmt.Println("Error:", err)
                return
            }
            defer resp.Body.Close() //关键：关闭响应体
            io.Copy(io.Discard, resp.Body)
        }()
    }
    wg.Wait()
}