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Concepts

Plain-English explainers for the techniques behind modern codebase intelligence — tree-sitter, RAG, MCP, embeddings, and more.

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Leiden communities vs PageRank for code hotspots
concepts8 min read

Leiden communities vs PageRank for code hotspots

Use leiden community detection to separate hotspots from boundaries in a code graph. Compare it with PageRank and pick the right signal for one repo decision.

2026-05-17Read →
RAG for code is not embeddings plus a vector store
concepts9 min read

RAG for code is not embeddings plus a vector store

RAG for code fails when it stops at chunks and vectors. See a 4-layer model with symbols, history, ownership, and a 36% cheaper retrieval path.

2026-05-10Read →