SAS Intelligent Advertising changed its ad-serving platform from using Datastax Cassandra clusters to Scylla clusters for its real-time visitor data storage. This presentation describes how this migration was executed with no downtime and with no loss of data, even as data was constantly being created or updated.
David is a backend developer (C++) for the real-time ad decisioning platform, responsible for large portions of ad serving components, including visitor data activation and update using NoSQL.