System Design Problem

Design a Mentions & Tagging System

Commonly Asked By:MetaTwitterSlackLinkedIn

  • Mention users: @username syntax in posts, comments, stories
  • Tag in media: Tag users in photos/videos at specific positions
  • Mention notifications: Notify mentioned users in real-time
  • Mention feed: "Posts you're mentioned in" aggregated view
  • Autocomplete: Suggest usernames as user types "@"
  • Mention permissions: Control who can mention you
  • Remove tags: Users can remove themselves from mentions
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