Golang 非阻塞缓冲区

同步示例:

type job struct {
    Id int
    Message string
}

for {
    // getJob() blocks until job is received
    job := getJob()
    doSomethingWithJob(job)
}

doSomethingWithJobgetJob

doSomethingWithJobgetJob

go routines 的概念目前让我感到困惑，因此非常感谢任何指向正确方向的指针来帮助我学习。

更新:感谢@JimB 的帮助。为什么 worker 5 总是接手工作？

jobCh := make(chan *job)

// Max 5 Workers
for i := 0; i < 5; i++ {

    go func() {

        for job := range jobCh {
            time.Sleep(time.Second * time.Duration(rand.Intn(3)))
            log.Println(i, string(job.Message))
        }
    }()
}

for {
    job, err := getJob()
    if err != nil {
        log.Println("Closing Channel")
        close(jobCh)
        break
    }

    jobCh <- job
}

log.Println("Complete")

示例输出

2016/06/09 22:19:57 5 {"id":10692,"name":"Test Message"}
2016/06/09 22:19:57 5 {"id":10687,"name":"Test Message"}
2016/06/09 22:19:57 5 {"id":10699,"name":"Test Message"}
2016/06/09 22:19:57 5 {"id":10701,"name":"Test Message"}
2016/06/09 22:19:57 5 {"id":10703,"name":"Test Message"}
2016/06/09 22:19:57 5 {"id":10704,"name":"Test Message"}