How is this not part of the job already? Too many people seem to have it in their head that the database is an inconvenience that gets in the way of their application. It is the heart and soul of every application, because all applications boil down to CRUD. You should learn SQL, full stop. Relation algebra is not that difficult. The time people spending learning the newest stupid JS framework could instead be spent learning a language that hasn't changed in decades. It will serve you well.
Install Percona Monitoring & Management. Clickhouse + Grafana all in one, dashboards ready to go, and free. Not hard.
> optimization, removing joins, removing aggregations?
How is this not part of the job already? Too many people seem to have it in their head that the database is an inconvenience that gets in the way of their application. It is the heart and soul of every application, because all applications boil down to CRUD. You should learn SQL, full stop. Relation algebra is not that difficult. The time people spending learning the newest stupid JS framework could instead be spent learning a language that hasn't changed in decades. It will serve you well.