Hi @barn4k, thank you for your suggestion. This is similar to A nice dashboard for the home screen - Feature Requests - n8n, so linking it for visibility. Currently, you would need to query the database directly to get such metrics or use the REST API (and then analyze the data manually).
As for you large database size, is there a chance you have stored large amounts of old execution data? n8n can help with cleaning this up as described here: Execution data - n8n Documentation (this can take a very long time though for large amounts of data, so you might want to enable this outside of your core business hours). When using SQLite make sure to also check the “Keep in mind” box at the bottom (this operation also requires additional disk space when running as your data is essentially copied in a new database file before the old one is deleted).