Hello fellow Forum members,

I have a rather random, abstract query...

I have a fairly good idea how Facebook works from a user/front perspective. But I was wondering if anyone knows of any literature of backend of Facebook? E.g. what powers Facebook? What skills would someone need if hypothetically speaking you wanted to build a Facebook equivalent from scratch?

I'm just genuinely curious. And since I appreciate it is far from a one sentence answer,I would be eternally grateful if someone knows of any good sources of information and it could be books, websites, anything really? I'd just like a starting point.

Thanks very much in advance.