A solutions architect must design a database solution for a high-traffic ecommerce web application. The database stores customer profiles and shopping cart info...

A solutions architect must design a database solution for a high-traffic ecommerce web application. The database stores customer profiles and shopping cart information. The database must support a peak load of several million requests each second and deliver responses in milliseconds. The operational overhead form an aging and scaling the database must be minimized.
Which database solution should the solutions architect recommend?