Serverless Database

turbopuffer rebuilds storage engine, demotes vector index to secondary role

turbopuffer, the serverless vector database used by Cursor and Notion, is overhauling its storage architecture in a project internally called 'turbopuffer v3'. Engineer Dan Harrison says the company is replacing its ANN vector index as the primary data structure, making it just one of several secondary indexes supported by a new core engine.

turbopuffer.com · 2026-10-01

New open-source project introduces stateless, typed memory database for AI agents

A developer has released a lightweight database designed specifically for AI agent memory, built on a typed schema with supersession rules instead of relying on semantic text retrieval. The system aims to run cold-first at the edge, avoiding the cost and complexity of maintaining hot vector indexes in RAM or SSDs for smaller, resource-constrained deployments. The project was shared as a Show HN post on Hacker News.

polign.com · 2026-08-26