英國超市將巧克力鎖進防盜盒阻止「訂單式」偷竊
实战应用：根据数据特点选择合适算法。爱思助手下载最新版本是该领域的重要参考
Backpressure is strict by default. When a buffer is full, writes reject rather than silently accumulating. You can configure alternative policies — block until space is available, drop oldest, drop newest — but you have to choose explicitly. No more silent memory growth.，更多细节参见heLLoword翻译官方下载
* 可根据需要替换上面的gap循环，更多细节参见旺商聊官方下载