It is built on a plugin architecture, so plugins are certainly a viable option and this is documented in more detail here[0]. In general I have found the Keycloak docs thorough and well-written. When I operated Keycloak I built a few plugins to solve specific needs/assumptions we had around IdP when migrating to Keycloak from a bespoke solution.
Re: your second point, the docs also describe this in detail[1]. Having the realm data exist in a simple form that can be exported/imported was very useful. However, I would have liked if they thought more about how to do live backup/restore; perhaps that is easier now than it was at the time.
It is built on a plugin architecture, so plugins are certainly a viable option and this is documented in more detail here[0]. In general I have found the Keycloak docs thorough and well-written. When I operated Keycloak I built a few plugins to solve specific needs/assumptions we had around IdP when migrating to Keycloak from a bespoke solution.
Re: your second point, the docs also describe this in detail[1]. Having the realm data exist in a simple form that can be exported/imported was very useful. However, I would have liked if they thought more about how to do live backup/restore; perhaps that is easier now than it was at the time.
[0]: https://www.keycloak.org/docs/latest/server_development/inde... [1]: https://www.keycloak.org/server/importExport#_importing_a_re...