At the recent RoachFest conference, Michael Czabator from DoorDash's storage infrastructure team discussed the company's use of CockroachDB to achieve high availability and performance at a million-QPS scale. DoorDash has rapidly expanded its use of CockroachDB, doubling its data storage, cluster size, and changefeeds within a year, and it employs various strategies to maintain efficiency and reliability. The storage team provides self-serve tools for internal engineering teams to manage databases and tasks like schema and user management while maintaining security. They have automated many operational processes using Argo workflows, which has significantly reduced manual workload and minimized errors and incidents. DoorDash's continuous improvement practices, including post-incident reviews and collaboration with Cockroach Labs to address full table scan issues, have enabled them to scale their database operations effectively without increasing the storage team's workload.