This is good practice, because the waiting time of the reader thread is reduced after wake-up.
这是一种好做法，因为这会减少唤醒之后读线程的等待时间。
It takes a bit of trial and error to get the optimal number of threads, but a good rule of thumb is 1 thread for every 100 concurrent sessions.
为获得最佳线程数，需要经过一些试验和失败，但一个很好的经验法则是，每100个并发会话分配一个线程。
The medicine bags are usually filled with mugwort and calamus, and the bright colors of the thread stand for the family's good wishes for the younger generation.
香包通常装满艾蒿和菖蒲；而明亮色彩的线象征着家庭对年轻一代的美好祝福。
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