Cassandra is a NoSQL Column Family oriented database with a built in scalability. More and more companies are faced with the scale challenge every day and Cassandra is often picked as a weapon of choice. Cassandra being NoSQL does not mean that data modeling does not matter, in reality it is crucial to any successful use out there. Lately more and more developers are asking me to tell more about the data modeling (compared with the relational perspective). That’s what this talks is all about.