但进一步增大的 R 角也让 S-Pen 的笔尾变成了一个楔形——虽然左右换个方向依然能插进去，但会留下一个凸起小三角，看上去不太讲究：
The irony is that streaming SSR is supposed to improve performance by sending content incrementally. But the overhead of the streams machinery can negate those gains, especially for pages with many small components. Developers sometimes find that buffering the entire response is actually faster than streaming through Web streams, defeating the purpose entirely.
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The same issues exist on the WritableStream side. A WritableStream has a highWaterMark and desiredSize. There is a writer.ready promise that producers of data are supposed to pay attention but often don't.