How do you build a RAG system for technical documentation?

Building RAG for technical documentation requires specific considerations. Parse documentation preserving code blocks, tables, diagrams, and hierarchical structure. Use markdown-aware chunking that keeps code examples with their explanations. Embed code snippets separately from prose text using code-aware embedding models. Preserve API signatures, parameter descriptions, and return types as structured metadata. Implement version-aware indexing for documentation that covers multiple software versions. Add category metadata for filtering by product, feature, or API module. For retrieval, boost exact matches on API names and function signatures alongside semantic search. Include code examples in the generation context since developers need actionable examples. Test the system against common developer queries including how-to questions, error resolution, and API usage patterns. Update the index automatically when documentation changes via CI/CD integration.