DBmarlin is a performance monitoring tool that helps CockroachDB customers optimize their database performance, resilience, and scalability. It provides real-time tracking of changes and performance across all databases, making it easier to diagnose problems and make optimizations. The combination of CockroachDB and DBmarlin offers a powerful solution for managing complex database systems with multiple cloud providers and self-hosted servers. With an intuitive visual interface and integration with popular tools, DBmarlin is designed to be easy to use and future proof.