使用Go重试机制代码更可靠

func add() (string, error) {
    var i = 1
    var j = 2
    result := i + j
    return strconv.Itoa(result), nil
}
func RetryFunc(count int, cback func() (string, error)) {
    for i := 0; i < count; i++ {
        result, err := cback()
        if err == nil {
            return result
        }
    }
}
// 应用
package main
func main(){
    Retry(3, add)
}

type Effector func(context.Context) (string, error)
func Retry(count int ,delay time.Duration, effector){
    return func(ctx. context.Context)(string, error){
        for r:=0; ;r++{
            response, err := effector()
            if err == nil || r>= count {
                return  response, err
             }
            fmt.Printf("Function call failed, retrying in %v", delay)
            select {
                case <- time.After(delay)
                case <- ctx.Done():
                    return "", ctx.Err()
            }
        }
    }
}