[nchmy]

> each KB of JavaScript sent to the client was costing the company $100,000 per year. How much is Kroger sending today? 2.4 Megabytes. Out of a chonky 4 MB payload. Assuming they could rebuild the site to hit a target of 450 KB, that's conservatively $435,000,000 per year.

This math isn't mathing for me, no matter how I slice it. Can someone help?

[ben_w]

I also think they made a mistake, but it doesn't look like a huge one?

4 MB ~= 4000 kB, (4000 kB - 450 kB) * $100,000/kB/year = $355,000,000/year

(With a bit of fiddling to get the same answer as them, I think they may have done this: (4000 kB + 350 kB) * $100,000/kB, though I wouldn't want to guess why this error happened).

[nchmy]

Hmm. But the JS is only 2.4mb, so not sure why the 4mb is probably being used.

Whatever the case, it's still immense numbers. So large, in fact, that I was skeptical about it. But Kroger has 150 billion in revenues and 2.5 billion in profits. I have to figure the loss is revenues, not profits - that would, indeed, be too high.

[B56c]

Author here, good catch! This was an error from a previous draft that I forgot to update. I'll update the post to reflect the correct figures.