How to use Kredis with Rails Discussion

Will someone please tell me the difference between a set and unique_list?

Thanks,
Leo

You mentioned Redis is best for ephemeral data as there's a chance the process crashes and the data is not persisted. That's a clear drawback, but what are some of the BENEFITS for using Redis over say PostgreSQL?

Is Redis more performant? In all cases or only some?

Would love to hear of some more real-world examples where you'd choose Redis over PostgreSQL.