A nine-minute start turns every traffic ramp into a queue. The answer reads a startup log stage by stage, prices each stage against the floor its bytes or work allow, separates the stages a cache removes from the ones only a warm pool can, and says which fix pays first.
Every worked answer and derivation in all 12 topics, every concept page, the full practice-test bank, and every code drill’s edge-case tests and reference solution.
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