Apache Cassandra
Apache Cassandra is a highly scalable, distributed NoSQL database designed to handle large amounts of data across many commodity servers with no single point of failure. It uses a masterless ring architecture and a column-family data model, providing high availability and linear scalability for write-heavy workloads. It is particularly suited for applications requiring low-latency operations and geographic distribution.
Developers should learn and use Apache Cassandra when building applications that demand high write throughput, fault tolerance, and global scalability, such as IoT platforms, real-time analytics, messaging systems, and recommendation engines. It is ideal for scenarios where data is time-series or event-driven, and when strong consistency can be traded for eventual consistency to achieve better performance and availability.