与摄影器材、舞台灯光类似，它属于活动经济的一部分，而活动经济本身具有明显的淡旺季波动。只要旺季结束，设备闲置率就会上升。
// block: Wait for space (unbounded pending queue)
。同城约会对此有专业解读
By launching the game with some additional logging commands, the exact request and response JSON that goes through the DLL gets written to the logs.
Explicit backpressure