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Comment by sgk284 | Hacker News Reader

These requirements are insane. By comparison, Stack Overflow had 25 servers in 2016 [1]:

    - 2 database servers (with half that RAM and 24 cores each)
    - 2 redis servers
    - 3 elasticsearch servers
    - 11 web servers
    - 4 load balancers
    - 3 service workers

[1]https://nickcraver.com/blog/2016/03/29/stack-overflow-the-ha...

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Can anyone recommend a Coursera/EdX or other online resource that goes over the basics of designing and setting up such kinds of high-performance server systems ?

I honestly don't think you'll find a course that covers this. The SO devs (and others) have kept a blog going for years with the type of information you're after. The search term is "mechanical sympathy."

Language/framework also matters. You're not going to pull this off with a backend based on a framework that gives no damns about performance. Rust, C# (bleeding edge), Java and C come to mind as good candidates.

SO doesn't have the content requirements of a modern Social Network: images, video, and streaming are huge factors. Especially with modern smartphone capabilities.

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