👉 Cassandra is a well-known and popular open-source database management system (DBMS) that was developed by Cassandra Labs. It's designed to be highly scalable, secure, and flexible, with an emphasis on improving data storage efficiency and performance. The term "cassandra" refers to the name of one of the main components or features of the system, which is a distributed NoSQL database. Cassandra is known for its ability to scale horizontally across multiple nodes, making it ideal for large-scale applications