Apache Cassandra is a free and open source NoSQL database management system that is designed to provide scalability, high availability, and uncompromised performance. In this article, I will guide you through installing the latest stable release of Apache Cassandra, Apache Cassandra 3.11.2, on a CentOS 7 server instance. - A fresh Vultr CentOS 7 x64 server instance with at least __4GB__ of memory. Insufficient memory will cause Apache Cassandra to exit abnormally. - A [sudo user](https://docs.vu......