Stream implementations can and do ignore backpressure; and some spec-defined features explicitly break backpressure. tee(), for instance, creates two branches from a single stream. If one branch reads faster than the other, data accumulates in an internal buffer with no limit. A fast consumer can cause unbounded memory growth while the slow consumer catches up — and there's no way to configure this or opt out beyond canceling the slower branch.
So close in fact, says Cardiff University archaeologist Tudur Davies, that some of these graves have several people in them.
，这一点在爱思助手下载最新版本中也有详细论述
Extraction Rate
Maggie 姐在新花都夜总会迎宾处前（图：南方人物周刊记者 方迎忠）