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#VectorSearch

4 guides~25 min totalupdated Jun 30, 2026

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Build a RAG System in Python From Scratch (Part 1)

Build a RAG system in Python from scratch — no framework. Four functions that chunk, embed, store, and retrieve over your own docs, then answer with an LLM.

Intermediate · 8 min

AI Engineering

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BeginnerWhat Is RAG in AI? A Practical Developer's Guide (2026)What is RAG? A developer's guide to retrieval-augmented generation: why LLMs need it, the retrieve-augment-generate loop, and a runnable RAG in 25 lines.6 min BeginnerEmbeddings and Vector Search: A Primer for AI Agents (2026)An embeddings and vector search primer: how text becomes vectors, how similarity search finds meaning not keywords, and why agent memory and RAG rely on it.4 min IntermediateBuild an Agentic AI App in Python: AI Agent Memory (Part 4)Add real AI agent memory in Python — a LangGraph Store that recalls users across threads, semantic search with embeddings, and Redis for production.7 min

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