这里是一个简单的 proto 文件示例，它定义了一个账户消息类型：
Drilling down to a point，更多细节参见同城约会
，这一点在safew官方下载中也有详细论述
Segment not present fault。关于这个话题，91视频提供了深入分析
For implementers, backpressure adds complexity without providing guarantees. The machinery to track queue sizes, compute desiredSize, and invoke pull() at the right times must all be implemented correctly. However, since these signals are advisory, all that work doesn't actually prevent the problems backpressure is supposed to solve.