HCD internals

To effectively manage and access data, you need to understand how Hyper-Converged Database (HCD) stores data. The hinted handoff feature and conformance to ACID (atomicity, consistency, isolation, durability) database properties are key concepts for understanding reads and writes. In HCD, consistency refers to how up-to-date and synchronized a row of data is on all of its replicas.

HCD provides data storage and retrieval through the Data API or drivers that interact with the CQL native protocol. See Connection methods comparison.