I thought it was terrific that you did this - I emailed the answer to myself so I can read it on the bus...
It looked like you did a lot of research into it based on the sources you posted.
How long did it take you to create that post?
What is your primary area of interest -- If I post a question about some other infrastructure, would you give such a detailed response, or was this a one-off?
It took maybe 4 hours, but it was fun and I learned a lot (not just about Heroku).
I've been using Heroku since near the beginning (we were in YC W08 together) so I was already vaguely familiar with the architecture. It was mostly filling in the details.
Infrastructure is a side interest that I'm trying to learn more about, so I can't guarantee I'll be able to answer your questions, but it's worth posting them anyway. Hopefully other people can answer as well (of course that's what I thought when I posted the Heroku question... I ended up answering it myself)
Rather than directing the question at me, just post a normal question on Quora, and post the link here or message me.
It looked like you did a lot of research into it based on the sources you posted.
How long did it take you to create that post?
What is your primary area of interest -- If I post a question about some other infrastructure, would you give such a detailed response, or was this a one-off?