LeetCode 355: Design Twitter — Step-by-Step Visual Trace

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Design a simplified Twitter system to post tweets, follow/unfollow users, and retrieve news feeds, learning essential system design skills for software engineering

intermediate Published 9 Apr 2026
Action Steps
  1. Design a user class to store user information and their followings
  2. Create a tweet class to store tweet information and its timestamp
  3. Implement a posting function to add new tweets to the system
  4. Develop a following function to allow users to follow/unfollow other users
  5. Build a news feed function to retrieve the 10 most recent tweets from a user and their followings
Who Needs to Know This

Software engineers and developers can benefit from this tutorial to improve their system design skills, especially when working on social media or news feed-related projects

Key Insight

💡 To design a simplified Twitter system, focus on creating classes for users and tweets, and implement functions for posting, following, and retrieving news feeds

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Design a simplified Twitter system to improve your system design skills #softwareengineering #systemdesign

Full Article

Design a simplified Twitter system that supports posting tweets, following/unfollowing users, and retrieving a user''s news feed containing the 10 most recent tweets from themselves and people they follow.
Read full article → ← Back to Reads

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