https://feedx.net
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.
，这一点在91视频中也有详细论述
记者了解到，地方政府为守护产品道地性，构建起了环环相扣的合规体系，但实际市场运行中，这些严格的保护措施，被企业逐项化解，在中国陈皮乐丰（新会）集散中心，商户销售的陈皮产地多元繁杂，甚至是公开叫卖，毫无顾忌。。服务器推荐对此有专业解读
We do pay the cost for a copy, but that cost is almost completely