Blocks storage The blocks storage is a Cortex storage engine based on Prometheus TSDB, which only requires an object store (eg. AWS S3, Google GCS, …) as backend storage. For more information, please refer to the Cortex blocks storage documentation. Chunk A chunk is an object containing compressed timestamp-value pairs. A single chunk contains timestamp-value pairs for several series. Churn Churn is the frequency at which series become idle. A series becomes idle once it’s not exported an...| Cortex