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Tech News
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.
Cloudflare has released K2, a durable event streaming primitive on its Developer Platform, now in public beta. K2 stores incoming events as an ordered log built on R2 object storage, letting multiple consumers read data independently and at their own pace without losing events during downtime.
Fireworks Research released Ember-1, a specialized model built on Kimi K3 that matches its quality while using 40% fewer tokens. The company says it trained the model to reason more efficiently rather than simply reducing reasoning effort, using more than 50 training experiments and 200 evaluations run on its Serverless Training platform. Ember-1 is available now and is described as the first in an ongoing series of specialized models from Fireworks.
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.