Apache Cassandra is an open-source NoSQL distributed database engine. NoSQL database engines store data as key-value pairs, and Apache Cassandra comes with Cassandra Query Language (CQL) for retrieving the data. It can handle large amounts of data while ensuring availability and consistency. It supports single-node replication and multi-location replication for redundancy, no single point of failure, and disaster recovery. It runs several nodes within a cluster, where each single node can receiv......