Grokking the System Design Interview, Volume II
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Flash Sale: High-Level Architecture

Step 4: High-Level Architecture

At a high level, the flash sale system will use a multi-tier, distributed architecture with components to handle presentation, application logic, caching, queuing, and persistence. Below is an outline of the key components and how they interact:

  • Clients (Web/App): Users interact via a web browser or mobile app. We can optimize the client to reduce load (for example, disable multiple rapid clicks on the buy button to cut down duplicate requests). The client will show a countdown to sale start, then enable the purchase action

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