Maybe I don't understand what this article is getting at, but isn't the idea of comparing a relational database, a no-sql database, a caching solution, and a ha

Maybe I don't understand what this article is getting at, but isn't the idea of comparing a relational database, a no-sql database, a caching solution, and a half caching solution/half no-sql database (redis) fundamentally flawed? It seems a lot like trying to compare apples and oranges.