Blueflood is an open-source, multi-tenant distributed metric processing system developed by Rackspace. It is designed to handle large volumes of time-series data, making it suitable for applications that require scalable and efficient metric collection and analysis. With a focus on scalability, Blueflood is capable of ingesting, processing, and retrieving metrics with high efficiency. The system is built to support cloud-scale environments and can be used for monitoring and telemetry purposes.