A broken MariaDB means broken Application, so maintaining insights in MariaDB operational performance is critical. Thankfully MariaDB offers a lot in terms of observability to resolve problems quickly and get great insights into opportunities for optimization. In this talk, we will cover the most important observability improvements in MariaDB ranging from Performance Schema and Information Schema to enhanced error logging and optimizer trace. If you're a Developer or DBA passionate about Observability or just want to be empowered to resolve MariaDB problems quickly and efficiently you should attend this talk.