Apache Cassandra is a distributed open source database management system for very large, structured databases. This open-source database management system is column-oriented and designed for both high scalability as well as reliability. Furthermore, Apache Cassandra is fault-tolerant and has no single point of failure. The data model of Cassandra was designed to support the distribution of data in large clusters. The structure of Apache Cassandra consists of multiple nodes. Each Cassandra server in the cluster is considered as a Cassandra node. A unique token is assigned to each Cassandra node. All tokens are sorted in descending order and form a ring.
Cassandra's data model offers the convenience of column indexes with the performance of log-structured updates.
Data is automatically replicated to multiple nodes for fault-tolerance.
Cassandra offers a powerful built-in caching.
These applications run on Linux CentOS 7.
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