Go 언어로 높은 신뢰성의 시스템 설계 및 구현을 달성하는 방법

func Divide(a, b int) (result int, err error) {
    if b == 0 {
        err = fmt.Errorf("division by zero")
        return
    }
    result = a / b
    return
}

result, err := Divide(10, 0)
if err != nil {
    log.Println("Error:", err)
} else {
    log.Println("Result:", result)
}

package main

import (
    "expvar"
    "net/http"
    _ "net/http/pprof"
)

var (
    requestCount = expvar.NewInt("request_count")
)

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

func handler(w http.ResponseWriter, r *http.Request) {
    requestCount.Add(1)
    // 处理请求的逻辑
    w.Write([]byte("Hello, World!"))
}

package main

import (
    "fmt"
    "sync"
)

func main() {
    var wg sync.WaitGroup
    jobs := make(chan int, 100)
    results := make(chan int, 100)

    // 创建工作池并启动多个goroutine处理任务
    for i := 1; i <= 5; i++ {
        wg.Add(1)
        go worker(i, jobs, results, &wg)
    }

    // 提交任务到工作池
    for i := 1; i <= 100; i++ {
        jobs <- i
    }
    close(jobs)

    // 等待所有任务完成
    wg.Wait()

    // 处理结果
    for result := range results {
        fmt.Println("Result:", result)
    }
}

func worker(id int, jobs <-chan int, results chan<- int, wg *sync.WaitGroup) {
    defer wg.Done()

    for job := range jobs {
        // 处理任务的逻辑
        result := job * 2
        results <- result
    }
}

package main

import "fmt"

func main() {
    defer func() {
        if r := recover(); r != nil {
            fmt.Println("Recovered:", r)
        }
    }()

    panic("oops")
}