The Pain: You search GitHub and find everyone using different memory stores — ChromaDB, PostgreSQL, plain Markdown files, "SQLite is good enough for a decade." Which is right?
The Answer: All of them. And none of them. Choosing without understanding your scenario is like buying a car without checking the road.
1. The Counter-Intuitive Question: Does Your Agent Actually Need "Memory"?
When I was building a university admissions data scraper (91 universities), I made the classic mistake: I equipped the agent with a full ChromaDB + vector retrieval stack, spent three days tuning it, and then discovered — 95% of the agent's time was just reading "which page did I get to last time."
A boolean would have sufficed. I built a vector database capable of semantic search.
