Grokking the System Design Interview, Volume II
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Google News: High-Level Architecture

Step 4: High-Level Architecture

At a high level, our news aggregator is composed of two main pipelines that work in tandem:

  1. Content Ingestion & Processing Pipeline – Responsible for collecting articles from external sources, processing them (normalize, deduplicate, categorize), and storing them in a content repository. This pipeline ensures we have a clean, up-to-date collection of news articles with metadata.
  2. Feed Generation & Delivery Pipeline – Responsible for delivering the right content to each user

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