[Spivak]

In 2022 that person is ops not dev. None of my devs have any knowledge [1] about TLS, DNS, or even TCP. The only interaction devs have with the messy outside world is Rack/WSGI, their DB ORM, their Queue/Job abstraction, and the AWS client libs.

[1] Not like they literally don’t know but that their code has no interaction with it.

[10000truths]

That veil of abstraction gets pierced very quickly the moment you need to debug an issue or regression in your application. I'm working on an internal application that's using Django in my current job, and there are plenty of instances where we've had to run an EXPLAIN on the generated MySQL query to identify performance bottlenecks.