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Genuine question, how is 9 web servers vertical scaling? And also, peak CPU usage of 12% means this is about 10x oversized for what is needed. Isn't it much better to only scale up when actually needed, mostly in terms of cost?


because they play in the major leagues where most teams have hundreds or thousands of servers, while they have those nine.

Yes, there is some horizontal scaling, but the sheer amount of vertical scaling here is still mind blowing.

I've run more servers in what were basically hobby projects compared to SO.


Probably 9 different geographical locations. Nothing to do with the actual load per server




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