Recently, I've noticed that e621 appears to be more reliable and efficient than FA. That has me curious about the server architecture underneath. It's simple to find information about FA's architecture because it's been well documented. Unfortunately, a quick Google search and reading a few wiki articles didn't make me any more knowledgeable about the e621 side of things. Is the server side of e621 public knowledge? If so, I'd like to read about it.