TechCrunch has a post on Instagram's founder Mike Krieger discussing its infrastructure.
How To Scale A $1 Billion Startup: A Guide From Instagram Co-Founder Mike Krieger
But if you’d like to hear a little (actually, a lot) about how Instagram got to where it did, read on.
Last night, Krieger gave a presentation at an Airbnb event for employees and members of the network, part of a regular series called the Tech Talk. The subject was “Scaling Instagram.”
The presentation is here with 185 slides.
The most interesting slides I found at the end.