One thing that could spice it up is maybe exploring cloud databases and scalability. Like, what happens when you need to serve thousands of requests a second. H

One thing that could spice it up is maybe exploring cloud databases and scalability. Like, what happens when you need to serve thousands of requests a second. How do you need to change your configuration to adapt to that kind of load. That might make the use of EXPLAIN more apparent as the the need to shave milliseconds off your response becomes more necessary.