Redis Cache Store is a new feature on Rails 5.2 although support for caching in Rails has been around for some time. A few cache stores already exist like MemCacheStore, FileStore, and MemoryStore. You can also use a custom store so no doubt some people are already using Redis as a cache store. The new feature on Rails 5.2 is the built-in Redis Cache Store. You don’t need to use a custom cache sto