Golang 마이크로서비스 개발은 어떤 핵심 작업에 적용될 수 있나요?

package main

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

func handler(w http.ResponseWriter, r *http.Request) {
    body, _ := ioutil.ReadAll(r.Body)
    fmt.Fprintf(w, "Hello, %s", body)
}

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)
}

package main

import (
    "fmt"
    "net"
    "net/rpc"
)

type Args struct {
    A, B int
}

type Reply struct {
    Result int
}

type Calculator struct{}

func (c *Calculator) Add(args *Args, reply *Reply) error {
    reply.Result = args.A + args.B
    return nil
}

func main() {
    calculator := new(Calculator)
    rpc.Register(calculator)
    listener, _ := net.Listen("tcp", "127.0.0.1:8081")
    rpc.Accept(listener)
}

package main

import (
    "fmt"
    "sort"
)

func main() {
    nums := []int{5, 3, 8, 1, 2, 9, 4}
    sort.Ints(nums)
    fmt.Println(nums)
}

package main

import (
    "log"
    "net/http"
    "os"
    "time"
    "expvar"
)

func handler(w http.ResponseWriter, r *http.Request) {
    log.Println("Request received:", r.URL.Path)
}

func main() {
    file, _ := os.OpenFile("app.log", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
    log.SetOutput(file)
    log.SetFlags(log.LstdFlags | log.Lmicroseconds)

    expvar.Publish("uptime", expvar.Func(func() interface{} {
        return time.Since(startTime).String()
    }))

    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)
}