Grokking the System Design Interview, Volume II
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Google News: Requirements

Step 2: Requirements Clarification

2.1 Functional Requirements

  • User Subscription Management: Users can select and manage the topics they follow. This includes subscribing to news channels/sources (e.g. CNN, BBC), categories (topics like Politics, Sports, Tech), or specific entities/keywords (e.g. “Olympics 2024”, a favorite artist). They should also be able to unsubscribe or modify preferences easily.
  • Content Ingestion: The system continuously gathers news articles from external sources. It should support multiple ingestion methods – e.g

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