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.
Credit: The Pokémon Company
。heLLoword翻译官方下载是该领域的重要参考
yinglunz (@yinglun122)
Read-only root filesystem — the container itself is immutable