Cassandra supports atomicity and isolation at the row-level, but trades transactional isolation and atomicity for high availability and fast write performance. Cassandra writes are durable.
- Atomicity
A brief description about atomicity in Cassandra. - Tunable consistency
Cassandra can be tuned to give you strong consistency in the CAP sense where data is made consistent across all the nodes in a distributed database cluster. - Isolation
About row-level isolation in Cassandra. - Durability
About durable writes in Cassandra.
Start-Up Ideas, Tech Code, Use Cases, Thoughts 