One of the more misunderstood aspects of Cassandra data modeling is that of how to properly order your data. In this article we will explore a typical modeling journey from “first attempt” to “end solution.” We will discuss the limitations of the ORDER BY clause, as well as explain how Cassandra clustering order works – and how to take advantage of that order when building a data model.
Read full post : http://www.datastax.com/dev/blog/we-shall-have-order