Tuning the number of servers to start and keep spare depends on the role of the server.

根据服务器的角色调优要启动和保持空闲的服务器数量。

youdao

So suppose,gruesome as it was,this weekend I'm in some horrible accident and my torso gets destroyed and they keep my brain on life support, oxygenating it just long enough to do some radical surgery into some spare torsos.

来做个可怕的假设，我在周末惨遭事故,肉体完全损坏，只剩大脑靠系统维持生命，持续补氧到能被高超手术植入另外的身体。

耶鲁公开课 - 死亡课程节选

Single parents who keep spare rooms so they can have access rights to their children at weekends could fall foul of the under-occupancy rule he said.

BBC: Carl Sargeant: Housing benefit change 'complete madness'

So three hours at the minimum wage would pay the shortfall then he can keep the spare bedroom and have someone to stay.

BBC: Steve Webb

The laser works everywhere, all the time, quickly and on every course, and the battery last a really long time, but I keep a tiny spare in my bag.

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