[keycloak-user] rolling upgrade

Hello everyone, for a few months we are using keycloak at car2go. Currently we are on keycloak version 2.5.4.Final but we’d like to upgrade. Is there any documented way how to do this in a clustered environment without downtime? Are older versions compatible to the new database scheme so we can perform a rolling upgrade? Are objects cached in Infinispan compatible? The only documentation I found so far ishttps://keycloak.gitbooks.io/documentation/server_admin/topics/MigrationFromOlderVersions.html but this does involve downtime. Am I missing something? What is the approach you would recommend? Thanks in advance - mat If you are not the addressee, please inform us immediately that you have received this e-mail by mistake, and delete it. We thank you for your support.