Golang多线程处理：是否需要引入线程池？

package main

import (
    "fmt"
    "sync"
    "time"
)

type Job struct {
    ID int
}

func worker(id int, jobs <-chan Job, results chan<- int) {
    for job := range jobs {
        fmt.Printf("Worker %d processing job %d
", id, job.ID)
        time.Sleep(time.Second) // 模拟任务处理时间
        results <- job.ID
    }
}

func main() {
    numJobs := 10
    numWorkers := 3

    jobs := make(chan Job, numJobs)
    results := make(chan int, numJobs)

    var wg sync.WaitGroup

    // 创建线程池
    for i := 1; i <= numWorkers; i++ {
        wg.Add(1)
        go func(workerID int) {
            defer wg.Done()
            worker(workerID, jobs, results)
        }(i)
    }

    // 提交任务
    for i := 1; i <= numJobs; i++ {
        jobs <- Job{ID: i}
    }
    close(jobs)

    // 等待所有任务完成
    go func() {
        wg.Wait()
        close(results)
    }()

    // 处理结果
    for result := range results {
        fmt.Printf("Job %d completed
", result)
    }

    fmt.Println("All jobs have been completed.")
}