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Data flows left to right. Each stage reads input, does its work, writes output. There's no pipe reader to acquire, no controller lock to manage. If a downstream stage is slow, upstream stages naturally slow down as well. Backpressure is implicit in the model, not a separate mechanism to learn (or ignore).。关于这个话题，夫子提供了深入分析
tar -xzf node.tar.gz，这一点在91视频中也有详细论述
Discard new data: drop what's incoming
const response = await fetch(url);