Scalability concepts

- [Narrator] So now we'll compare…SQL versus NoSQL and talk about…the concepts that are important for scalability.…So here's a really good graph that actually…talks about some of the differences.…So you can see the y-axis is Scalability and Performance…and the x-axis is Depth of Functionality.…And you can see that these numbers…really don't mean anything; they're relative numbers.…But it just gives you an idea that if you look at…the Relational Databases, their Depth…of Functionality is huge, and the number's…around 14,000, which is just a metric.…

But Scalability and Performance is really low.…It's about 2,000.…If you look at Document Databases,…they're very close to SQL in…Depth of Functionality, just a little behind.…At the same time, they're very good…at Scalability and Performance.…On the other hand, if you look at Memcached,…which is really the fastest Key Value pair,…it is very good at Scalability and Performance,…but barely has any Depth of Functionality.…In fact, it's not even like Redis.…Redis at least has data structures.…