If you want to use Cassandra, picking the right data model is maybe the hardest decision. Because your performance scale’s better when you add nodes to the cluster, if you have choosen the right model. If you are familiar with relational databases then CQL will look pretty easy. But the way you use it can be very different from things you already know. The goal of this session is to explain some of the basic rules you should focus on when designing your scheme for Apache Cassandra. With these hints, you’ll get pretty good performance just out of the box.