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Oct 11 15:56:05 fedora bootc[1252]: error: Upgrading: Deployment contains local rpm-ostree modifications; cannot upgrade via bootc. You can run `rpm-ostree reset` to undo the modifications.
，更多细节参见搜狗输入法2026
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.
The answer: OsmAnd's custom-built Highway Hierarchy (HH) Routing. This isn't your standard routing engine; it's a ground-up redesign, meticulously engineered to overcome the unique challenges of providing advanced navigation on compact, offline-first map data.