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Re:What Every Programmer Should Know About Memory (2007) [pdf] by favorited on Monday March 04, 2019 @09:33PM (#19307643)
> all the company cares about is: "Is it fast enough so that people still buy/use the product?

Studies have shown that is not the case.

Amazon found that every 100ms of latency cost them 1% in sales. Google found that 400 milliseconds means a nearly 0.5% decrease in search sessions.

So yes, a 5% speedup in an application could be an enormous win for a company.

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