В Финляндии предупредили об опасном шаге ЕС против России09:28
执行到 sleep 时，线程会进入阻塞状态，操作系统把它挂起，不分配 CPU 时间片。但这个线程仍然被占用着，线程池里它的“坑位”一直没释放。如果同时有 200 个请求进来，线程池的 200 个线程全被占满，都在等 IO，第 201 个请求就得排队，哪怕 CPU 空闲 99%。
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Tommy Schaefer was sentenced to 18 years in prison in Bali for the 2014 murder of Sheila von Wiese-Mack, the mother of Heather Mack, during a luxury holiday, in a case that became known as the Bali suitcase murder. Prosecutors allege the couple were trying to gain access to a $1.5m (£1.1m) trust fund.
同一需求不同人问法不同，结果波动大