Using redis for database cache?

It’s kinda the same, isn’t it?

Well I don’t know, for example in W3 total cache you can use memcached to cache objects and database separately.

I figured there must be some benefit to enabling both object and database cache. My understanding is if using database cache in Redis you could avoid hitting MySQL more often.

For example the way WordPress caches ajax requests could be limited compared to how redis could do it.

That’s what the object cache does, avoid database hits : )