DataStax Python Driver

For someone with relational database background, analyzing data in Cassandra isn’t intuitive. There are two reasons. First, Cassandra data table is hardly updated or deleted in avoidance of tombstones. Insertion is the only action on the table resulting in multiple versions of each record all stored in the same table, thus a much longer table … Read moreDataStax Python Driver

Cassandra data model (as opposed to relational model)

Bad data model design with Cassandra causes chronic pains as application scales. I had to re-read about data model design in “Cassandra – the Definitive Guide” and keep my notes and thoughts in this post. The data modelling in the relational world is indoctrinated to every students out of university. It embraces several things: Entity-Relation: … Read moreCassandra data model (as opposed to relational model)