Worker pool go

package main  
  
import (  
"fmt"  
"time"  
)  
  
func worker(id int, jobs <-chan int, results chan<- int) {  
    for j := range jobs {  
        fmt.Println("worker", id, "processing job", j)  
        time.Sleep(time.Second)  
        results <- j * 2  
    }  
}  
  
func main() {  
    job := make(chan int, 10)  
    result := make(chan int, 10)  
    for w := 1; w <= 2; w++ {  
        go worker(w, job, result)  
    }  
    for j := 1; j <= 9; j++ {  
        job <- j  
    }  
    close(job)  
    for a := 1; a <= 9; a++ {  
        <-result  
    }  
}