Apache Cassandra

Cassandra is a wide-column store database designed for scalability and high availability without compromising performance. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect platform for mission-critical data.

When to Use

• High Write Throughput: Ingests millions of writes per second.
• Always On: Zero single points of failure. Updates can happen even if nodes are down (Eventual Consistency).
• Multi-Region: Active-Active multi-region replication is built-in.

Quick Start (CQL)

CREATE TABLE users (
  user_id UUID PRIMARY KEY,
  name text,
  email text
);