At my last company, we used redis both for celery as a queue, and a cache for values we needed to call often and retrieve quickly. We ALSO used Mongo, but mores

At my last company, we used redis both for celery as a queue, and a cache for values we needed to call often and retrieve quickly. We ALSO used Mongo, but moreso as a store for larger documents that were called less frequently. I think it's not fair to compare them directly together, they are each useful in their own specific cases.