Cassandra can be simply described in a single phrase: a massively scalable, highly available open source NoSQL database that is based on peer-to-peer architecture.
Cassandra is now 5 years old. It is an active open source project in the Apache Software Foundation and therefore it is known as Apache Cassandra as well. Cassandra can manage huge volume of structured, semi-structured, and unstructured data in a large distributed cluster across multiple data centers. It provides linear scalability, high performance, fault tolerance, and supports a very flexible data model.
Netflix and Cassandra
One very famous case study of Cassandra is Netflix's move to replace their Oracle SQL database to Cassandra running on cloud. As of March ...