Redis isn't a cache, so no it is not the best solution for caching a Rails app. Keeping in mind that other tools you might use, such as background processors l

Redis isn't a cache, so no it is not the best solution for caching a Rails app. Keeping in mind that other tools you might use, such as background processors like Resque/Sidekiq, also use Redis you should definitely not be using Redis as a cache. If your setup is simple (single node, few processes) and caching is minimal (just caching some things at boot time) you could get away using ActiveSupport's MemoryStore. Otherwise I recommend just setting up Memcached (it's dead simple).