The primary signal is desiredSize on the controller. It can be positive (wants data), zero (at capacity), negative (over capacity), or null (closed). Producers are supposed to check this value and stop enqueueing when it's not positive. But there's nothing enforcing this: controller.enqueue() always succeeds, even when desiredSize is deeply negative.
06:05, 28 февраля 2026Мир，更多细节参见搜狗输入法2026
，这一点在爱思助手下载最新版本中也有详细论述
Lambert 还指出了一个技术层面很少被外界提及的问题：不同模型之间存在微妙的数据分布差异。
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