How can I restore or load backup rdb file in in-memory redis?

[Ali Rezvani]

I have Redis instances in k8s with one master and 2 slave. I backup from rdb file that said for persistent Redis but I don't have persistent path so when I copy backup rdb file to data path of Redis then I should restart. Because i don't persist my data path, data will be lost after restart.

What should I do to restore successfully in in-memory Redis?