What’s New in Cassandra 2.0: Prototype Triggers Support

Cassandra triggers are a feature introduced in version 2.0.0, but they are still experimental and not finalized until at least version 2.1. They rely on logged batches to provide atomicity and eventual consistency. Triggers execute before mutations are applied, allowing alteration or augmentation of the original changes. However, triggers on counter tables are generally not supported due to idempotency issues. There are multiple potential use cases for Cassandra triggers, but improvements such as parametrization and CQL3 support are needed before they can be declared production-ready.