Agent Memory & Context Engineering

Short summary

A detailed technical breakdown of how agent memory works, distinguishing context window (working memory) from external persistent stores. Covers four memory types—short-term, episodic, semantic, and procedural—and shows code for conversation summarization and vector-based retrieval. Emphasizes that production memory systems need recency weighting, source ranking, and explicit state beyond raw vector similarity.

• •Context window is working memory, not persistent storage; real memory lives externally and is selectively loaded
• •Four memory types: short-term, episodic, semantic, procedural—good systems use all
• •Vector similarity is blunt; production systems layer recency, authority, and workflow state on top

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