'SphereGeometry': () = {
// 易错点5：忘记push当前索引 → 后续价格无法找到正确的上一个更大值，结果全错。夫子对此有专业解读
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This overhead is mandated by the spec's reliance on promises for buffer management, completion, and backpressure signals. While some of it is implementation-specific, much of it is unavoidable if you're following the spec as written. For high-frequency streaming — video frames, network packets, real-time data — this overhead is significant.