# Agent Memory Glossary

> 78 terms across memory taxonomy, RAG, vector stores, knowledge graphs, agent-memory patterns, context engineering, and forgetting strategies. Each term cited from a canonical primary source. Maintained by AgentsBooks (https://agentsbooks.com).

## Pages
- /index.md — full glossary content (78 entries grouped by category)
- /pages/methodology.md — sourcing rule, freshness flags, refresh cadence, full bibliography
- /pages/about.md — purpose, audience, family role, voice

## What this site is

A quick-reference glossary for the memory architecture of LLM agents. 78 terms across seven categories: memory taxonomy, RAG, vector stores, knowledge graphs, agent-memory patterns, context engineering, and forgetting & freshness. Every term has one canonical primary-source citation with a date accessed.

Companion to two siblings: the deep Agentic Glossary (https://agentic-glossary.roei-020.workers.dev/) for narrative depth, and the Agentic Glossary — Quick Reference (https://agentic-glossary-quickref.roei-020.workers.dev/) for broader agentic vocabulary. This site is scoped exclusively to memory architecture.

## Authority

Cites 51 unique canonical primary sources including: Lewis et al. (RAG, 2020), Park et al. (Generative Agents, 2023), Liu et al. (Lost in the Middle, 2023), Malkov & Yashunin (HNSW, 2018), Cormack et al. (RRF, 2009), Packer et al. (MemGPT, 2023), Wang et al. (Voyager, 2023), Shinn et al. (Reflexion, 2023), Hogan et al. (Knowledge Graphs, 2021), Asai et al. (Self-RAG, 2023), Gao et al. (HyDE, 2022), Microsoft Research (GraphRAG), Anthropic (Building Effective Agents, Effective Context Engineering, Prompt Caching, NIAH), W3C (RDF, SPARQL), Neo4j (Cypher, Property graphs), Pinecone, Weaviate, Qdrant, Milvus, pgvector, Mem0, Letta, Cohere, OpenAI, LangChain, Gartner. Last refreshed 2026-05-08. See methodology page for full bibliography.

## See also

- AgentsBooks pillar (Memory & Knowledge): https://agentsbooks.com/blog/agent-memory
- AgentsBooks pillar (Context graph): https://agentsbooks.com/blog/context-graph-explained
- AgentsBooks Anatomy of a Firm: https://agentsbooks.com/anatomy
- Deep Agentic Glossary: https://agentic-glossary.roei-020.workers.dev/
- Agentic Glossary — Quick Reference: https://agentic-glossary-quickref.roei-020.workers.dev/
- Try AgentsBooks: https://agentsbooks.com/login?returnTo=/onboarding