Redis won't function till it has loaded all data from disk to memory. So if your webapp doesn't have too much data then possibly.

Also since Redis is memory backed you need more RAM then data. This can get very costly.

Another annoyance is that Redis is single process single threaded so you really have to avoid running long running queries unless you do extensive manual sharding.

(Disclaimer: it's been a few years since I had to think about these constraints so maybe some are removed in more recent versions of Redis)