嗨,大家好,我是asong,一名普普通通程序员。目前从事Golang后端开发。
联系我:
嗨,大家好,我是asong,一名普普通通程序员。目前从事Golang后端开发。
联系我:
请问下,为啥不直接用channel去实现呢,把从db申请成功的 分段号[min,max]丢到channel,当channel不满时,生产者就往里面放新的分段,消费者从里面取出分段号进行分配, 感觉这种实现是不是会简单很多呢?
func (l *LeafService) GetID(ctx context.Context, bizTag string) (uint64, error) {
// 先去内存中看一下是否已经初始了,未初始化则开启兜底策略初始化一下。
l.mutex.Lock()
var err error
seqs := l.leafSeq.Get(bizTag)
if seqs == nil {
// 不存在初始化一下
seqs, err = l.InitCache(ctx, bizTag)
if err != nil {
return 0, err
}
}
l.mutex.Unlock()
方法有可能在Unlock前返回
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