That is the question. With v4 it appears the only option for cache is Redis. Problem is, the Redis plugin that handles flushing the cache doesn’t seem to work on v4 and Redis doesn’t seem to play nice with some plugins like Elementor.
Is there another option for cache that I have just missed built into v4? With the issues listed above, is it still better just to have Redis and deal with the issues? Is there a reason to have Redis if you have something like Cloudflare for cache on the front end?