AI Second Brain: LightRAG Track/What Is Graph RAG and Why It Matters
AI Second Brain: LightRAG Track
Module 1 of 8

What Is Graph RAG and Why It Matters

How LightRAG combines vector search with knowledge graphs. Why flat files and keyword search fail for growing knowledge bases. The architecture in plain terms.

14 min read

What You'll Learn

  • Explain why traditional RAG (vector-only search) fails for complex knowledge bases
  • Describe how LightRAG adds a knowledge graph layer on top of vector search
  • Understand the difference between keyword search, semantic search, and graph-augmented search
  • Identify real use cases where Graph RAG provides value over flat file systems

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