Who says that big data doesn’t need a data model? You won’t after this presentation. Relational systems have always been built on the premise of modeling relationships. As you will see, static schema, one-to-one, many-to-many still have a place in Cassandra. From the familiar, we’ll go into the specific differences in Cassandra and tricks to make your application fast and resilient. As a bonus, the topic of transactions will make a guest appearance. Saying hello to scaling and uptime doesn’t mean saying goodbye to a solid data model.