Migrating 3B rows to TiDB for a high-traffic application

A short story about why & how Omniconvert migrated from MongoDB to TiDB, with no downtime, for an application serving 15-20k requests per minute. We will discuss the challenges that prompted the migration, why we chose TiDB, overview stress testing & performance evaluation of the application running on TiDB, as well as walk through the steps of the migration. And of course, highlight some lessons learned and the end-user perceived improvements.