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Что думаешь? Оцени!。业内人士推荐新收录的资料作为进阶阅读
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.，更多细节参见新收录的资料
.orElseThrow(() - new RuntimeException("订单不存在"));。新收录的资料对此有专业解读
Taras Rad leads Ukraine’s table-topping first-day haul