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Openai/6937b8ff-b070-8002-89c2-4f3c35f2c29a
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=== ### === * 国道免费,任何车辆都能走。 * 虽然路很宽,但车非常多。平时畅通,高峰期极度拥堵(延迟高、丢包)。 * 普通车辆没有任何优先权,得排队。 * 各种“优化路径”(智能路由/加速)就像是给你安排一条相对更空的旁路,能缓解拥塞,但本质还是国道。 ===== - 它们仍然属于“国道系统”(也就是公网),但具有更高优先级。 ===== * 就像警车、消防车: - 有保留车道 - 有更高的路权 - 遇到拥堵时也能更快通过 * 虽然不能做到绝对稳定,但比普通国道线路更快、更稳、更低延迟。 ===== - 专线相当于收费高速,甚至可以比喻为整个车道只有你在用: - 不与大众车辆竞争 - 永远畅通 - 速度稳定,不绕路 - 服务等级(SLA)可保证 =====
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