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Timed mock · Cloud Architecture
45 minutes, split the way the real round is. Answer first, then compare.
The interviewer says
An existing application - part static marketing pages, part logged-in personalised content - runs on a handful of servers with sessions held in application memory. A campaign is about to increase traffic by one to two orders of magnitude, arriving as a spike rather than a ramp. Keep it fast and available. Work across the whole stack, not just the database.
Work on paper or in the boxes below. Write your answer first; the guide's version only appears when you ask for it. Nothing you write leaves this browser.