this is more let's say applicable to beckoned for fronting players or front-end closer api's don't try to do on the on demand or on fly aggregation to Mapes try to set up a domain and prepare it how how easy it is fitting don't try to do aggregation over many domains it really means that you did something wrong if you need metrics if you need aggregated metrics try to prepare it in advance by relying on event-driven messages so instead of querying the database to see how much SIM cards customer has you can do once he is activating a new