System Design Twitter Course

System Design Twitter Course

Lesson 47: Graph Algorithm Optimization - Building Twitter's Social Graph Engine

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valuein
Feb 02, 2026
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What We’re Building Today

Today we’re implementing Twitter’s social graph processing engine - the system that analyzes billions of follower relationships to detect communities, identify influential users, and partition data for distributed processing. By the end, you’ll have a graph processing system capable of handling billion-edge networks in real-time.

Learning Objectives:

  • Implement optimized graph algorithms for billion-edge social networks

  • Build community detection using Label Propagation and Louvain methods

  • Design influence scoring with PageRank and centrality measures

  • Create graph partitioning for distributed processing across clusters

  • Develop real-time analytics dashboard showing graph insights

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