Cassandra
Apache Cassandra is a distributed NoSQL database designed to manage very large amounts of data across multiple servers while ensuring high availability and fault tolerance. It is built to handle heavy read and write workloads without any single point of failure, making it suitable for applications that require constant uptime and reliability.
Cassandra follows a peer-to-peer architecture, where all nodes in the cluster have equal roles. This design allows the system to continue working even if one or more nodes fail. Data is automatically replicated across different nodes and data centers, ensuring durability and quick recovery.
Unlike traditional relational databases, Cassandra uses a flexible schema and a column-based data model. It does not support complex joins or transactions like RDBMS, but it excels at fast data access and scalability. This makes it ideal for use cases such as real-time analytics, IoT applications, social media platforms, and messaging systems.