Redis usage


Many open-source project use redis just as a cache.
What about harbor? why it use it?

I did already my homework on this one, and my last step is too look at harbor code itself... but I have a terrible experiences with beego

I want to be sure if redis data must be:

- persitent on redis statefulset upgrade
- is that data important and must be backup? but as PostgreSQL is already there... I assume critical data that need integrity is stored there. I assume it might just be user sessions.
- is redis can be rebuild from PostgreSQL, just not efficient when redis start from a blank PVC.

Thanks a lot

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