What's your ldap? I can look you up and see what you were working on, and whether it required making design decisions around reduced average system latency.

And yeah this is exactly my point. If you present a "standard and common" solution that isn't applicable to the question I actually asked, and if you blindly apply solutions without thinking about what problem is actually being solved, then that's bad in an interview.

Average latency is usually not the thing you want to reduce because it's not representative of what any actual user is experiencing.