Apache Cassandra is an open-source database management framework that uses a column-based distributed data model. Built to handle large data stores across clusters of commodity servers, Cassandra provides a highly available, fault-tolerant database environment with high throughput capabilities. Because Cassandra distributes and replicates data across clusters, every node in that cluster has the same role and can service any request, eliminating network bottlenecks and single points of failure. In addition, Cassandra provides developers with ample functionalities, including easy elasticity and scalability, tunable consistency, MapReduce support for Hadoop integrations, and CQL (Cassandra Query Language) that may be used with language drivers for Java (JDBC), Python (DBAPI2), Node.JS (Helenus) and Golang (gocql). A number of high-profile organizations use Cassandra, including GoDaddy, Reddit, Instagram, and The Weather Channel.