Doing a Large-Scale Data Migration Without Downtime and During Regular Business Hours

As a lead software developer at Siemens, I was tasked to move billions of records from MySQL to Apache Cassandra™ and change all of the associated legacy logic to boot. This session will cover all the maneuvers I performed to turn a potential “hair on fire, run around screaming apocalypse” into a reasonably sane, gradual progression – albeit not an easy one.