K2

In this workflow, if a node shows a missing model, the corresponding model file must be selected manually: choose K2 as the main model, Chenwen 2.1 as the 2.1 model below, and select the four-view or other style LoRA for the LoRA node as needed.

Cloudflare K2 received 220 points and 89 comments on Hacker News.

K2 very likely uses Durable Objects as the storage and coordination layer for partition state, combined with R2 for message persistence.

For teams using Cloudflare Workers, K2 eliminates the need for data to leave the Cloudflare network to interface with external Kafka clusters, thereby reducing latency and egress bandwidth costs.

Cloudflare launched a product called K2, focused on Serverless event streaming.

For large organizations that already run self-managed Kafka deeply and have mature operations teams, the motivation to migrate to K2 may be insufficient.

Serverless streaming products priced by request/data volume may be more expensive than self-managed clusters in high-throughput scenarios, which is a concern regarding the pricing model.

The difficulty of implementing consumer group rebalancing in a Serverless architecture lies in the fact that Serverless instances are inherently stateless and can be destroyed at any time, whereas rebalancing requires negotiation among group members.