[keycloak-user] KeyCloak Performance and Sizing

Hi everyone, we're going to setup a KeyCloak infrastructure to handle identity management for up to 4 million users. In order to handle this amount we'd like to setup a proper infrastructure. The general idea is to create a containerised cluster of key cloak servers connected to an highly available db2 database. Therefore i'd like to understand what kind of data and amount is persisted in the db. I haven't found any details about sizing a key cloak infrastructure - i hope you can share some more details with me. Kind Regards