How to backup dgraph

hi,I just got in touch with digraph, so I was wondering if dgraph cluster does backup management? Does it have backup best practices?

I found binary backup from the documentation, but it looks like this is an instantaneous full backup of the dgraph cluster. I’m not sure how to use backup to restore to any point in time when the dgraph cluster is completely unavailable. Like in MySQL, data can be restored to any point in time through xtrabackup + binlog.

Look forward to and thank you for your answer.
tips: Draph run on k8s, and 3 replicas, version is v21.12.0

I’m a MySQL DBA and recently took over a dgraph cluster, so I’m wondering how to back up dgraph like MySQL.