Cassandra Clusters

The way the data is stored in cassandra is a little bit different. You're typically going straight to a record or a set of records, and then you can sort it within there. So an example would be storing all posts on social media by a user idea. Then you can easily go retrieve all the posts by that user, sordid by the post date. But if you specify a fixed key for the first column, then you can do a range query over the other column.