The request cycle goes through several states and, depending on the current state, sends different instructions to the request cycle processor.

请求周期会经历若干状态并会根据当前状态向请求周期处理器发出不同的指令。

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The request cycle processor is responsible for handling instructions during the request cycle. It's used by RequestCycle, which calls its methods in the predefined order.

请求周期处理器负责处理请求周期内的指令。

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