Rafael Chacón Staff Software Engineer, Infrastructure From the very beginning of Slack, MySQL was used as the storage engine for all our data. Slack operated MySQL servers in an active-active configuration. This is the story of how we changed our data storage architecture from the active-active clusters over to Vitess — a horizontal scaling system for MySQL. Vitess is the present and future of Dat
![Scaling Datastores at Slack with Vitess - Slack Engineering](https://cdn-ak-scissors.b.st-hatena.com/image/square/946c07da45ebbaf41f05fe3a7094bf1fd754b743/height=288;version=1;width=512/https%3A%2F%2Fslack.engineering%2Fwp-content%2Fuploads%2Fsites%2F7%2F2020%2F11%2Fcluster_from_webapp.png%3Fw%3D640)