For implementers, backpressure adds complexity without providing guarantees. The machinery to track queue sizes, compute desiredSize, and invoke pull() at the right times must all be implemented correctly. However, since these signals are advisory, all that work doesn't actually prevent the problems backpressure is supposed to solve.
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"Often, it's difficult to know if that's related to the injection, or whether they had them originally but weren't assessed properly beforehand."
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"I'm going to keep sticking at it until I get a home," he says.